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s390 updates for the 5.1 merge window

Browse Source 
- A copy of Arnds compat wrapper generation series
 
  - Pass information about the KVM guest to the host in form the control
    program code and the control program version code
 
  - Map IOV resources to support PCI physical functions on s390
 
  - Add vector load and store alignment hints to improve performance
 
  - Use the "jdd" constraint with gcc 9 to make jump labels working again
 
  - Remove amode workaround for old z/VM releases from the DCSS code
 
  - Add support for in-kernel performance measurements using the
    CPU measurement counter facility
 
  - Introduce a new PMU device cpum_cf_diag to capture counters and
    store thenn as event raw data.
 
  - Bug fixes and cleanups
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Merge tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:

 - A copy of Arnds compat wrapper generation series

 - Pass information about the KVM guest to the host in form the control
   program code and the control program version code

 - Map IOV resources to support PCI physical functions on s390

 - Add vector load and store alignment hints to improve performance

 - Use the "jdd" constraint with gcc 9 to make jump labels working again

 - Remove amode workaround for old z/VM releases from the DCSS code

 - Add support for in-kernel performance measurements using the CPU
   measurement counter facility

 - Introduce a new PMU device cpum_cf_diag to capture counters and store
   thenn as event raw data.

 - Bug fixes and cleanups

* tag 's390-5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits)
  Revert "s390/cpum_cf: Add kernel message exaplanations"
  s390/dasd: fix read device characteristic with CONFIG_VMAP_STACK=y
  s390/suspend: fix prefix register reset in swsusp_arch_resume
  s390: warn about clearing als implied facilities
  s390: allow overriding facilities via command line
  s390: clean up redundant facilities list setup
  s390/als: remove duplicated in-place implementation of stfle
  s390/cio: Use cpa range elsewhere within vfio-ccw
  s390/cio: Fix vfio-ccw handling of recursive TICs
  s390: vfio_ap: link the vfio_ap devices to the vfio_ap bus subsystem
  s390/cpum_cf: Handle EBUSY return code from CPU counter facility reservation
  s390/cpum_cf: Add kernel message exaplanations
  s390/cpum_cf_diag: Add support for s390 counter facility diagnostic trace
  s390/cpum_cf: add ctr_stcctm() function
  s390/cpum_cf: move common functions into a separate file
  s390/cpum_cf: introduce kernel_cpumcf_avail() function
  s390/cpu_mf: replace stcctm5() with the stcctm() function
  s390/cpu_mf: add store cpu counter multiple instruction support
  s390/cpum_cf: Add minimal in-kernel interface for counter measurements
  s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts
  ...
This commit is contained in:
Linus Torvalds 2019-03-05 11:13:10 -08:00
commit 3591b19511
71 changed files with 1845 additions and 1079 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/s390/Kconfig
View File

@ -75,6 +75,7 @@ config S390
select ARCH_HAS_SET_MEMORY
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
@ -379,6 +380,7 @@ config COMPAT
select COMPAT_BINFMT_ELF if BINFMT_ELF
select ARCH_WANT_OLD_COMPAT_IPC
select COMPAT_OLD_SIGACTION
select HAVE_UID16
depends on MULTIUSER
help
Select this option if you want to enable your system kernel to

20
arch/s390/boot/als.c
View File

@ -7,6 +7,7 @@
#include <asm/facility.h>
#include <asm/lowcore.h>
#include <asm/sclp.h>
#include "boot.h"
/*
* The code within this file will be called very early. It may _not_
@ -58,7 +59,7 @@ static void u16_to_decimal(char *str, u16 val)
*str = '\0';
}
static void print_missing_facilities(void)
void print_missing_facilities(void)
{
static char als_str[80] = "Missing facilities: ";
unsigned long val;
@ -90,7 +91,6 @@ static void print_missing_facilities(void)
}
strcat(als_str, "\n");
sclp_early_printk(als_str);
sclp_early_printk("See Principles of Operations for facility bits\n");
}
static void facility_mismatch(void)
@ -98,6 +98,7 @@ static void facility_mismatch(void)
sclp_early_printk("The Linux kernel requires more recent processor hardware\n");
print_machine_type();
print_missing_facilities();
sclp_early_printk("See Principles of Operations for facility bits\n");
disabled_wait(0x8badcccc);
}
@ -105,20 +106,7 @@ void verify_facilities(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(S390_lowcore.stfle_fac_list); i++)
S390_lowcore.stfle_fac_list[i] = 0;
asm volatile(
" stfl 0(0)\n"
: "=m" (S390_lowcore.stfl_fac_list));
S390_lowcore.stfle_fac_list[0] = (u64)S390_lowcore.stfl_fac_list << 32;
if (S390_lowcore.stfl_fac_list & 0x01000000) {
register unsigned long reg0 asm("0") = ARRAY_SIZE(als) - 1;
asm volatile(".insn s,0xb2b00000,0(%1)" /* stfle */
: "+d" (reg0)
: "a" (&S390_lowcore.stfle_fac_list)
: "memory", "cc");
}
__stfle(S390_lowcore.stfle_fac_list, ARRAY_SIZE(S390_lowcore.stfle_fac_list));
for (i = 0; i < ARRAY_SIZE(als); i++) {
if ((S390_lowcore.stfle_fac_list[i] & als[i]) != als[i])
facility_mismatch();

2
arch/s390/boot/boot.h
View File

@ -6,6 +6,8 @@ void startup_kernel(void);
void detect_memory(void);
void store_ipl_parmblock(void);
void setup_boot_command_line(void);
void parse_boot_command_line(void);
void setup_memory_end(void);
void print_missing_facilities(void);
#endif /* BOOT_BOOT_H */

66
arch/s390/boot/ipl_parm.c
View File

@ -1,10 +1,12 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/ctype.h>
#include <asm/ebcdic.h>
#include <asm/sclp.h>
#include <asm/sections.h>
#include <asm/boot_data.h>
#include <asm/facility.h>
#include "boot.h"
char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
@ -143,8 +145,66 @@ void setup_boot_command_line(void)
append_ipl_block_parm();
}
static void modify_facility(unsigned long nr, bool clear)
{
if (clear)
__clear_facility(nr, S390_lowcore.stfle_fac_list);
else
__set_facility(nr, S390_lowcore.stfle_fac_list);
}
static void check_cleared_facilities(void)
{
unsigned long als[] = { FACILITIES_ALS };
int i;
for (i = 0; i < ARRAY_SIZE(als); i++) {
if ((S390_lowcore.stfle_fac_list[i] & als[i]) != als[i]) {
sclp_early_printk("Warning: The Linux kernel requires facilities cleared via command line option\n");
print_missing_facilities();
break;
}
}
}
static void modify_fac_list(char *str)
{
unsigned long val, endval;
char *endp;
bool clear;
while (*str) {
clear = false;
if (*str == '!') {
clear = true;
str++;
}
val = simple_strtoull(str, &endp, 0);
if (str == endp)
break;
str = endp;
if (*str == '-') {
str++;
endval = simple_strtoull(str, &endp, 0);
if (str == endp)
break;
str = endp;
while (val <= endval) {
modify_facility(val, clear);
val++;
}
} else {
modify_facility(val, clear);
}
if (*str != ',')
break;
str++;
}
check_cleared_facilities();
}
static char command_line_buf[COMMAND_LINE_SIZE] __section(.data);
static void parse_mem_opt(void)
void parse_boot_command_line(void)
{
char *param, *val;
bool enabled;
@ -165,12 +225,14 @@ static void parse_mem_opt(void)
if (!rc && !enabled)
noexec_disabled = 1;
}
if (!strcmp(param, "facilities"))
modify_fac_list(val);
}
}
void setup_memory_end(void)
{
parse_mem_opt();
#ifdef CONFIG_CRASH_DUMP
if (!OLDMEM_BASE && early_ipl_block_valid &&
early_ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP &&

1
arch/s390/boot/startup.c
View File

@ -53,6 +53,7 @@ void startup_kernel(void)
sclp_early_read_info();
store_ipl_parmblock();
setup_boot_command_line();
parse_boot_command_line();
setup_memory_end();
detect_memory();
if (!IS_ENABLED(CONFIG_KERNEL_UNCOMPRESSED)) {

1
arch/s390/boot/string.c
View File

@ -2,6 +2,7 @@
#include <linux/ctype.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#undef CONFIG_KASAN
#include "../lib/string.c"
int strncmp(const char *cs, const char *ct, size_t count)

6
arch/s390/hypfs/hypfs.h
View File

@ -43,7 +43,7 @@ int hypfs_diag0c_init(void);
void hypfs_diag0c_exit(void);
/* Set Partition-Resource Parameter */
int hypfs_sprp_init(void);
void hypfs_sprp_init(void);
void hypfs_sprp_exit(void);
/* debugfs interface */
@ -69,9 +69,9 @@ struct hypfs_dbfs_file {
struct dentry *dentry;
};
extern int hypfs_dbfs_init(void);
extern void hypfs_dbfs_init(void);
extern void hypfs_dbfs_exit(void);
extern int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
extern void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df);
extern void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df);
#endif /* _HYPFS_H_ */

8
arch/s390/hypfs/hypfs_dbfs.c
View File

@ -78,14 +78,11 @@ static const struct file_operations dbfs_ops = {
.unlocked_ioctl = dbfs_ioctl,
};
int hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
void hypfs_dbfs_create_file(struct hypfs_dbfs_file *df)
{
df->dentry = debugfs_create_file(df->name, 0400, dbfs_dir, df,
&dbfs_ops);
if (IS_ERR(df->dentry))
return PTR_ERR(df->dentry);
mutex_init(&df->lock);
return 0;
}
void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df)
@ -93,10 +90,9 @@ void hypfs_dbfs_remove_file(struct hypfs_dbfs_file *df)
debugfs_remove(df->dentry);
}
int hypfs_dbfs_init(void)
void hypfs_dbfs_init(void)
{
dbfs_dir = debugfs_create_dir("s390_hypfs", NULL);
return PTR_ERR_OR_ZERO(dbfs_dir);
}
void hypfs_dbfs_exit(void)

9
arch/s390/hypfs/hypfs_diag.c
View File

@ -440,11 +440,10 @@ __init int hypfs_diag_init(void)
pr_err("The hardware system does not support hypfs\n");
return -ENODATA;
}
if (diag204_info_type == DIAG204_INFO_EXT) {
rc = hypfs_dbfs_create_file(&dbfs_file_d204);
if (rc)
return rc;
}
if (diag204_info_type == DIAG204_INFO_EXT)
hypfs_dbfs_create_file(&dbfs_file_d204);
if (MACHINE_IS_LPAR) {
rc = diag224_get_name_table();
if (rc) {

6
arch/s390/hypfs/hypfs_diag0c.c
View File

@ -54,8 +54,7 @@ static void *diag0c_store(unsigned int *count)
if (!cpu_vec)
goto fail_put_online_cpus;
/* Note: Diag 0c needs 8 byte alignment and real storage */
diag0c_data = kzalloc(sizeof(struct hypfs_diag0c_hdr) +
cpu_count * sizeof(struct hypfs_diag0c_entry),
diag0c_data = kzalloc(struct_size(diag0c_data, entry, cpu_count),
GFP_KERNEL | GFP_DMA);
if (!diag0c_data)
goto fail_kfree_cpu_vec;
@ -125,7 +124,8 @@ int __init hypfs_diag0c_init(void)
{
if (!MACHINE_IS_VM)
return 0;
return hypfs_dbfs_create_file(&dbfs_file_0c);
hypfs_dbfs_create_file(&dbfs_file_0c);
return 0;
}
/*

6
arch/s390/hypfs/hypfs_sprp.c
View File

@ -137,11 +137,11 @@ static struct hypfs_dbfs_file hypfs_sprp_file = {
.unlocked_ioctl = hypfs_sprp_ioctl,
};
int hypfs_sprp_init(void)
void hypfs_sprp_init(void)
{
if (!sclp.has_sprp)
return 0;
return hypfs_dbfs_create_file(&hypfs_sprp_file);
return;
hypfs_dbfs_create_file(&hypfs_sprp_file);
}
void hypfs_sprp_exit(void)

3
arch/s390/hypfs/hypfs_vm.c
View File

@ -279,7 +279,8 @@ int hypfs_vm_init(void)
guest_query = local_guest;
else
return -EACCES;
return hypfs_dbfs_create_file(&dbfs_file_2fc);
hypfs_dbfs_create_file(&dbfs_file_2fc);
return 0;
}
void hypfs_vm_exit(void)

11
arch/s390/hypfs/inode.c
View File

@ -456,9 +456,8 @@ static int __init hypfs_init(void)
{
int rc;
rc = hypfs_dbfs_init();
if (rc)
return rc;
hypfs_dbfs_init();
if (hypfs_diag_init()) {
rc = -ENODATA;
goto fail_dbfs_exit;
@ -467,10 +466,7 @@ static int __init hypfs_init(void)
rc = -ENODATA;
goto fail_hypfs_diag_exit;
}
if (hypfs_sprp_init()) {
rc = -ENODATA;
goto fail_hypfs_vm_exit;
}
hypfs_sprp_init();
if (hypfs_diag0c_init()) {
rc = -ENODATA;
goto fail_hypfs_sprp_exit;
@ -489,7 +485,6 @@ fail_hypfs_diag0c_exit:
hypfs_diag0c_exit();
fail_hypfs_sprp_exit:
hypfs_sprp_exit();
fail_hypfs_vm_exit:
hypfs_vm_exit();
fail_hypfs_diag_exit:
hypfs_diag_exit();

126
arch/s390/include/asm/cpu_mcf.h Normal file
View File

@ -0,0 +1,126 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Counter facility support definitions for the Linux perf
*
* Copyright IBM Corp. 2019
* Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
*/
#ifndef _ASM_S390_CPU_MCF_H
#define _ASM_S390_CPU_MCF_H
#include <linux/perf_event.h>
#include <asm/cpu_mf.h>
enum cpumf_ctr_set {
CPUMF_CTR_SET_BASIC = 0, /* Basic Counter Set */
CPUMF_CTR_SET_USER = 1, /* Problem-State Counter Set */
CPUMF_CTR_SET_CRYPTO = 2, /* Crypto-Activity Counter Set */
CPUMF_CTR_SET_EXT = 3, /* Extended Counter Set */
CPUMF_CTR_SET_MT_DIAG = 4, /* MT-diagnostic Counter Set */
/* Maximum number of counter sets */
CPUMF_CTR_SET_MAX,
};
#define CPUMF_LCCTL_ENABLE_SHIFT 16
#define CPUMF_LCCTL_ACTCTL_SHIFT 0
static const u64 cpumf_ctr_ctl[CPUMF_CTR_SET_MAX] = {
[CPUMF_CTR_SET_BASIC] = 0x02,
[CPUMF_CTR_SET_USER] = 0x04,
[CPUMF_CTR_SET_CRYPTO] = 0x08,
[CPUMF_CTR_SET_EXT] = 0x01,
[CPUMF_CTR_SET_MT_DIAG] = 0x20,
};
static inline void ctr_set_enable(u64 *state, int ctr_set)
{
*state |= cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ENABLE_SHIFT;
}
static inline void ctr_set_disable(u64 *state, int ctr_set)
{
*state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ENABLE_SHIFT);
}
static inline void ctr_set_start(u64 *state, int ctr_set)
{
*state |= cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT;
}
static inline void ctr_set_stop(u64 *state, int ctr_set)
{
*state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT);
}
static inline void ctr_set_multiple_enable(u64 *state, u64 ctrsets)
{
*state |= ctrsets << CPUMF_LCCTL_ENABLE_SHIFT;
}
static inline void ctr_set_multiple_disable(u64 *state, u64 ctrsets)
{
*state &= ~(ctrsets << CPUMF_LCCTL_ENABLE_SHIFT);
}
static inline void ctr_set_multiple_start(u64 *state, u64 ctrsets)
{
*state |= ctrsets << CPUMF_LCCTL_ACTCTL_SHIFT;
}
static inline void ctr_set_multiple_stop(u64 *state, u64 ctrsets)
{
*state &= ~(ctrsets << CPUMF_LCCTL_ACTCTL_SHIFT);
}
static inline int ctr_stcctm(enum cpumf_ctr_set set, u64 range, u64 *dest)
{
switch (set) {
case CPUMF_CTR_SET_BASIC:
return stcctm(BASIC, range, dest);
case CPUMF_CTR_SET_USER:
return stcctm(PROBLEM_STATE, range, dest);
case CPUMF_CTR_SET_CRYPTO:
return stcctm(CRYPTO_ACTIVITY, range, dest);
case CPUMF_CTR_SET_EXT:
return stcctm(EXTENDED, range, dest);
case CPUMF_CTR_SET_MT_DIAG:
return stcctm(MT_DIAG_CLEARING, range, dest);
case CPUMF_CTR_SET_MAX:
return 3;
}
return 3;
}
struct cpu_cf_events {
struct cpumf_ctr_info info;
atomic_t ctr_set[CPUMF_CTR_SET_MAX];
atomic64_t alert;
u64 state, tx_state;
unsigned int flags;
unsigned int txn_flags;
};
DECLARE_PER_CPU(struct cpu_cf_events, cpu_cf_events);
bool kernel_cpumcf_avail(void);
int __kernel_cpumcf_begin(void);
unsigned long kernel_cpumcf_alert(int clear);
void __kernel_cpumcf_end(void);
static inline int kernel_cpumcf_begin(void)
{
if (!cpum_cf_avail())
return -ENODEV;
preempt_disable();
return __kernel_cpumcf_begin();
}
static inline void kernel_cpumcf_end(void)
{
__kernel_cpumcf_end();
preempt_enable();
}
/* Return true if store counter set multiple instruction is available */
static inline int stccm_avail(void)
{
return test_facility(142);
}
#endif /* _ASM_S390_CPU_MCF_H */

22
arch/s390/include/asm/cpu_mf-insn.h Normal file
View File

@ -0,0 +1,22 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Support for CPU-MF instructions
*
* Copyright IBM Corp. 2019
* Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
*/
#ifndef _ASM_S390_CPU_MF_INSN_H
#define _ASM_S390_CPU_MF_INSN_H
#ifdef __ASSEMBLY__
/* Macro to generate the STCCTM instruction with a customized
* M3 field designating the counter set.
*/
.macro STCCTM r1 m3 db2
.insn rsy,0xeb0000000017,\r1,\m3 & 0xf,\db2
.endm
#endif /* __ASSEMBLY__ */
#endif

18
arch/s390/include/asm/cpu_mf.h
View File

@ -12,6 +12,8 @@
#include <linux/errno.h>
#include <asm/facility.h>
asm(".include \"asm/cpu_mf-insn.h\"\n");
#define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */
#define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */
#define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */
@ -209,17 +211,25 @@ static inline int ecctr(u64 ctr, u64 *val)
return cc;
}
/* Store CPU counter multiple for the MT utilization counter set */
static inline int stcctm5(u64 num, u64 *val)
/* Store CPU counter multiple for a particular counter set */
enum stcctm_ctr_set {
EXTENDED = 0,
BASIC = 1,
PROBLEM_STATE = 2,
CRYPTO_ACTIVITY = 3,
MT_DIAG = 5,
MT_DIAG_CLEARING = 9, /* clears loss-of-MT-ctr-data alert */
};
static inline int stcctm(enum stcctm_ctr_set set, u64 range, u64 *dest)
{
int cc;
asm volatile (
" .insn rsy,0xeb0000000017,%2,5,%1\n"
" STCCTM %2,%3,%1\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc)
: "Q" (*val), "d" (num)
: "Q" (*dest), "d" (range), "i" (set)
: "cc", "memory");
return cc;
}

12
arch/s390/include/asm/diag.h
View File

@ -32,6 +32,7 @@ enum diag_stat_enum {
DIAG_STAT_X2FC,
DIAG_STAT_X304,
DIAG_STAT_X308,
DIAG_STAT_X318,
DIAG_STAT_X500,
NR_DIAG_STAT
};
@ -293,6 +294,17 @@ struct diag26c_mac_resp {
u8 res[2];
} __aligned(8);
#define CPNC_LINUX 0x4
union diag318_info {
unsigned long val;
struct {
unsigned int cpnc : 8;
unsigned int cpvc_linux : 24;
unsigned char cpvc_distro[3];
unsigned char zero;
};
};
int diag204(unsigned long subcode, unsigned long size, void *addr);
int diag224(void *ptr);
int diag26c(void *req, void *resp, enum diag26c_sc subcode);

25
arch/s390/include/asm/ftrace.h
View File

@ -81,5 +81,30 @@ static inline void ftrace_generate_call_insn(struct ftrace_insn *insn,
#endif
}
/*
* Even though the system call numbers are identical for s390/s390x a
* different system call table is used for compat tasks. This may lead
* to e.g. incorrect or missing trace event sysfs files.
* Therefore simply do not trace compat system calls at all.
* See kernel/trace/trace_syscalls.c.
*/
#define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS
static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
{
return is_compat_task();
}
#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
static inline bool arch_syscall_match_sym_name(const char *sym,
const char *name)
{
/*
* Skip __s390_ and __s390x_ prefix - due to compat wrappers
* and aliasing some symbols of 64 bit system call functions
* may get the __s390_ prefix instead of the __s390x_ prefix.
*/
return !strcmp(sym + 7, name) || !strcmp(sym + 8, name);
}
#endif /* __ASSEMBLY__ */
#endif /* _ASM_S390_FTRACE_H */

14
arch/s390/include/asm/jump_label.h
View File

@ -10,6 +10,12 @@
#define JUMP_LABEL_NOP_SIZE 6
#define JUMP_LABEL_NOP_OFFSET 2
#if __GNUC__ < 9
#define JUMP_LABEL_STATIC_KEY_CONSTRAINT "X"
#else
#define JUMP_LABEL_STATIC_KEY_CONSTRAINT "jdd"
#endif
/*
* We use a brcl 0,2 instruction for jump labels at compile time so it
* can be easily distinguished from a hotpatch generated instruction.
@ -20,9 +26,9 @@ static inline bool arch_static_branch(struct static_key *key, bool branch)
".pushsection __jump_table,\"aw\"\n"
".balign 8\n"
".long 0b-.,%l[label]-.\n"
".quad %0-.\n"
".quad %0+%1-.\n"
".popsection\n"
: : "X" (&((char *)key)[branch]) : : label);
: : JUMP_LABEL_STATIC_KEY_CONSTRAINT (key), "i" (branch) : : label);
return false;
label:
return true;
@ -34,9 +40,9 @@ static inline bool arch_static_branch_jump(struct static_key *key, bool branch)
".pushsection __jump_table,\"aw\"\n"
".balign 8\n"
".long 0b-.,%l[label]-.\n"
".quad %0-.\n"
".quad %0+%1-.\n"
".popsection\n"
: : "X" (&((char *)key)[branch]) : : label);
: : JUMP_LABEL_STATIC_KEY_CONSTRAINT (key), "i" (branch) : : label);
return false;
label:
return true;

1
arch/s390/include/asm/pci.h
View File

@ -148,7 +148,6 @@ struct zpci_dev {
enum pci_bus_speed max_bus_speed;
struct dentry *debugfs_dev;
struct dentry *debugfs_perf;
struct s390_domain *s390_domain; /* s390 IOMMU domain data */
};

2
arch/s390/include/asm/perf_event.h
View File

@ -12,7 +12,6 @@
#include <linux/perf_event.h>
#include <linux/device.h>
#include <asm/cpu_mf.h>
/* Per-CPU flags for PMU states */
#define PMU_F_RESERVED 0x1000
@ -55,6 +54,7 @@ struct perf_sf_sde_regs {
#define PERF_CPUM_SF_MAX_CTR 2
#define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */
#define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */
#define PERF_EVENT_CPUM_CF_DIAG 0xBC000UL /* Event: Counter sets */
#define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */
#define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */
#define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \

4
arch/s390/include/asm/qdio.h
View File

@ -361,8 +361,8 @@ struct qdio_initialize {
unsigned long);
int scan_threshold;
unsigned long int_parm;
void **input_sbal_addr_array;
void **output_sbal_addr_array;
struct qdio_buffer **input_sbal_addr_array;
struct qdio_buffer **output_sbal_addr_array;
struct qdio_outbuf_state *output_sbal_state_array;
};

1
arch/s390/include/asm/sclp.h
View File

@ -78,6 +78,7 @@ struct sclp_info {
unsigned char has_skey : 1;
unsigned char has_kss : 1;
unsigned char has_gisaf : 1;
unsigned char has_diag318 : 1;
unsigned int ibc;
unsigned int mtid;
unsigned int mtid_cp;

28
arch/s390/include/asm/string.h
View File

@ -12,15 +12,21 @@
#include <linux/types.h>
#endif
#define __HAVE_ARCH_MEMCHR /* inline & arch function */
#define __HAVE_ARCH_MEMCMP /* arch function */
#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMMOVE /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */
#define __HAVE_ARCH_MEMSET16 /* arch function */
#define __HAVE_ARCH_MEMSET32 /* arch function */
#define __HAVE_ARCH_MEMSET64 /* arch function */
void *memcpy(void *dest, const void *src, size_t n);
void *memset(void *s, int c, size_t n);
void *memmove(void *dest, const void *src, size_t n);
#ifndef CONFIG_KASAN
#define __HAVE_ARCH_MEMCHR /* inline & arch function */
#define __HAVE_ARCH_MEMCMP /* arch function */
#define __HAVE_ARCH_MEMSCAN /* inline & arch function */
#define __HAVE_ARCH_STRCAT /* inline & arch function */
#define __HAVE_ARCH_STRCMP /* arch function */
#define __HAVE_ARCH_STRCPY /* inline & arch function */
@ -35,9 +41,6 @@
/* Prototypes for non-inlined arch strings functions. */
int memcmp(const void *s1, const void *s2, size_t n);
void *memcpy(void *dest, const void *src, size_t n);
void *memset(void *s, int c, size_t n);
void *memmove(void *dest, const void *src, size_t n);
int strcmp(const char *s1, const char *s2);
size_t strlcat(char *dest, const char *src, size_t n);
size_t strlcpy(char *dest, const char *src, size_t size);
@ -45,6 +48,7 @@ char *strncat(char *dest, const char *src, size_t n);
char *strncpy(char *dest, const char *src, size_t n);
char *strrchr(const char *s, int c);
char *strstr(const char *s1, const char *s2);
#endif /* !CONFIG_KASAN */
#undef __HAVE_ARCH_STRCHR
#undef __HAVE_ARCH_STRNCHR
@ -95,6 +99,7 @@ static inline void *memset64(uint64_t *s, uint64_t v, size_t count)
#if !defined(IN_ARCH_STRING_C) && (!defined(CONFIG_FORTIFY_SOURCE) || defined(__NO_FORTIFY))
#ifdef __HAVE_ARCH_MEMCHR
static inline void *memchr(const void * s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
@ -109,7 +114,9 @@ static inline void *memchr(const void * s, int c, size_t n)
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
return (void *) ret;
}
#endif
#ifdef __HAVE_ARCH_MEMSCAN
static inline void *memscan(void *s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
@ -121,7 +128,9 @@ static inline void *memscan(void *s, int c, size_t n)
: "+a" (ret), "+&a" (s) : "d" (r0) : "cc", "memory");
return (void *) ret;
}
#endif
#ifdef __HAVE_ARCH_STRCAT
static inline char *strcat(char *dst, const char *src)
{
register int r0 asm("0") = 0;
@ -137,7 +146,9 @@ static inline char *strcat(char *dst, const char *src)
: "d" (r0), "0" (0) : "cc", "memory" );
return ret;
}
#endif
#ifdef __HAVE_ARCH_STRCPY
static inline char *strcpy(char *dst, const char *src)
{
register int r0 asm("0") = 0;
@ -150,7 +161,9 @@ static inline char *strcpy(char *dst, const char *src)
: "cc", "memory");
return ret;
}
#endif
#ifdef __HAVE_ARCH_STRLEN
static inline size_t strlen(const char *s)
{
register unsigned long r0 asm("0") = 0;
@ -162,7 +175,9 @@ static inline size_t strlen(const char *s)
: "+d" (r0), "+a" (tmp) : : "cc", "memory");
return r0 - (unsigned long) s;
}
#endif
#ifdef __HAVE_ARCH_STRNLEN
static inline size_t strnlen(const char * s, size_t n)
{
register int r0 asm("0") = 0;
@ -175,6 +190,7 @@ static inline size_t strnlen(const char * s, size_t n)
: "+a" (end), "+a" (tmp) : "d" (r0) : "cc", "memory");
return end - s;
}
#endif
#else /* IN_ARCH_STRING_C */
void *memchr(const void * s, int c, size_t n);
void *memscan(void *s, int c, size_t n);

135
arch/s390/include/asm/syscall_wrapper.h Normal file
View File

@ -0,0 +1,135 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* syscall_wrapper.h - s390 specific wrappers to syscall definitions
*
*/
#ifndef _ASM_S390_SYSCALL_WRAPPER_H
#define _ASM_S390_SYSCALL_WRAPPER_H
#ifdef CONFIG_COMPAT
#define __SC_COMPAT_TYPE(t, a) \
__typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
#define __SC_COMPAT_CAST(t, a) \
({ \
long __ReS = a; \
\
BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
!__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t) && \
!__TYPE_IS_LL(t)); \
if (__TYPE_IS_L(t)) \
__ReS = (s32)a; \
if (__TYPE_IS_UL(t)) \
__ReS = (u32)a; \
if (__TYPE_IS_PTR(t)) \
__ReS = a & 0x7fffffff; \
if (__TYPE_IS_LL(t)) \
return -ENOSYS; \
(t)__ReS; \
})
#define __S390_SYS_STUBx(x, name, ...) \
asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
{ \
long ret = __s390x_sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__));\
__MAP(x,__SC_TEST,__VA_ARGS__); \
return ret; \
}
/*
* To keep the naming coherent, re-define SYSCALL_DEFINE0 to create an alias
* named __s390x_sys_*()
*/
#define COMPAT_SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
asmlinkage long __s390_compat_sys_##sname(void); \
ALLOW_ERROR_INJECTION(__s390_compat__sys_##sname, ERRNO); \
asmlinkage long __s390_compat_sys_##sname(void)
#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
asmlinkage long __s390x_sys_##sname(void); \
ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
asmlinkage long __s390_sys_##sname(void) \
__attribute__((alias(__stringify(__s390x_sys_##sname)))); \
asmlinkage long __s390x_sys_##sname(void)
#define COND_SYSCALL(name) \
cond_syscall(__s390x_sys_##name); \
cond_syscall(__s390_sys_##name)
#define SYS_NI(name) \
SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers); \
SYSCALL_ALIAS(__s390_sys_##name, sys_ni_posix_timers)
#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
__diag_push(); \
__diag_ignore(GCC, 8, "-Wattribute-alias", \
"Type aliasing is used to sanitize syscall arguments");\
asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
__attribute__((alias(__stringify(__se_compat_sys##name)))); \
ALLOW_ERROR_INJECTION(compat_sys##name, ERRNO); \
static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
__MAP(x,__SC_TEST,__VA_ARGS__); \
return ret; \
} \
__diag_pop(); \
static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
/*
* As some compat syscalls may not be implemented, we need to expand
* COND_SYSCALL_COMPAT in kernel/sys_ni.c and COMPAT_SYS_NI in
* kernel/time/posix-stubs.c to cover this case as well.
*/
#define COND_SYSCALL_COMPAT(name) \
cond_syscall(__s390_compat_sys_##name)
#define COMPAT_SYS_NI(name) \
SYSCALL_ALIAS(__s390_compat_sys_##name, sys_ni_posix_timers)
#else /* CONFIG_COMPAT */
#define __S390_SYS_STUBx(x, fullname, name, ...)
#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
asmlinkage long __s390x_sys_##sname(void); \
ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
asmlinkage long __s390x_sys_##sname(void)
#define COND_SYSCALL(name) \
cond_syscall(__s390x_sys_##name)
#define SYS_NI(name) \
SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers);
#endif /* CONFIG_COMPAT */
#define __SYSCALL_DEFINEx(x, name, ...) \
__diag_push(); \
__diag_ignore(GCC, 8, "-Wattribute-alias", \
"Type aliasing is used to sanitize syscall arguments");\
asmlinkage long __s390x_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
__attribute__((alias(__stringify(__se_sys##name)))); \
ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
static long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
__S390_SYS_STUBx(x, name, __VA_ARGS__) \
asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
{ \
long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
__MAP(x,__SC_TEST,__VA_ARGS__); \
return ret; \
} \
__diag_pop(); \
static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
#endif /* _ASM_X86_SYSCALL_WRAPPER_H */

8
arch/s390/include/asm/vx-insn.h
View File

@ -363,23 +363,23 @@
.endm
/* VECTOR LOAD MULTIPLE */
.macro VLM vfrom, vto, disp, base
.macro VLM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
MRXBOPC 0, 0x36, v1, v3
MRXBOPC \hint, 0x36, v1, v3
.endm
/* VECTOR STORE MULTIPLE */
.macro VSTM vfrom, vto, disp, base
.macro VSTM vfrom, vto, disp, base, hint=3
VX_NUM v1, \vfrom
VX_NUM v3, \vto
GR_NUM b2, \base /* Base register */
.word 0xE700 | ((v1&15) << 4) | (v3&15)
.word (b2 << 12) | (\disp)
MRXBOPC 0, 0x3E, v1, v3
MRXBOPC \hint, 0x3E, v1, v3
.endm
/* VECTOR PERMUTE */

6
arch/s390/include/uapi/asm/posix_types.h
View File

@ -20,6 +20,12 @@ typedef long __kernel_ssize_t;
typedef unsigned short __kernel_old_dev_t;
#define __kernel_old_dev_t __kernel_old_dev_t
#ifdef __KERNEL__
typedef unsigned short __kernel_old_uid_t;
typedef unsigned short __kernel_old_gid_t;
#define __kernel_old_uid_t __kernel_old_uid_t
#endif
#ifndef __s390x__
typedef unsigned long __kernel_ino_t;

6
arch/s390/kernel/Makefile
View File

@ -65,7 +65,7 @@ obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o
obj-$(CONFIG_AUDIT) += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y)
obj-$(CONFIG_COMPAT) += $(compat-obj-y)
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_KPROBES) += kprobes.o
@ -77,8 +77,10 @@ obj-$(CONFIG_JUMP_LABEL) += jump_label.o
obj-$(CONFIG_KEXEC_FILE) += machine_kexec_file.o kexec_image.o
obj-$(CONFIG_KEXEC_FILE) += kexec_elf.o
obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o
obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf_common.o
obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf.o perf_cpum_sf.o
obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o perf_regs.o
obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_diag.o
obj-$(CONFIG_TRACEPOINTS) += trace.o

235
arch/s390/kernel/compat_linux.c
View File

@ -34,7 +34,6 @@
#include <linux/stat.h>
#include <linux/filter.h>
#include <linux/highmem.h>
#include <linux/highuid.h>
#include <linux/mman.h>
#include <linux/ipv6.h>
#include <linux/in.h>
@ -58,245 +57,13 @@
#include "compat_linux.h"
/* For this source file, we want overflow handling. */
#undef high2lowuid
#undef high2lowgid
#undef low2highuid
#undef low2highgid
#undef SET_UID16
#undef SET_GID16
#undef NEW_TO_OLD_UID
#undef NEW_TO_OLD_GID
#undef SET_OLDSTAT_UID
#undef SET_OLDSTAT_GID
#undef SET_STAT_UID
#undef SET_STAT_GID
#define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
#define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
#define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
#define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
#define SET_UID16(var, uid) var = high2lowuid(uid)
#define SET_GID16(var, gid) var = high2lowgid(gid)
#define NEW_TO_OLD_UID(uid) high2lowuid(uid)
#define NEW_TO_OLD_GID(gid) high2lowgid(gid)
#define SET_OLDSTAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid)
#define SET_OLDSTAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid)
#define SET_STAT_UID(stat, uid) (stat).st_uid = high2lowuid(uid)
#define SET_STAT_GID(stat, gid) (stat).st_gid = high2lowgid(gid)
COMPAT_SYSCALL_DEFINE3(s390_chown16, const char __user *, filename,
u16, user, u16, group)
{
return ksys_chown(filename, low2highuid(user), low2highgid(group));
}
COMPAT_SYSCALL_DEFINE3(s390_lchown16, const char __user *,
filename, u16, user, u16, group)
{
return ksys_lchown(filename, low2highuid(user), low2highgid(group));
}
COMPAT_SYSCALL_DEFINE3(s390_fchown16, unsigned int, fd, u16, user, u16, group)
{
return ksys_fchown(fd, low2highuid(user), low2highgid(group));
}
COMPAT_SYSCALL_DEFINE2(s390_setregid16, u16, rgid, u16, egid)
{
return sys_setregid(low2highgid(rgid), low2highgid(egid));
}
COMPAT_SYSCALL_DEFINE1(s390_setgid16, u16, gid)
{
return sys_setgid(low2highgid(gid));
}
COMPAT_SYSCALL_DEFINE2(s390_setreuid16, u16, ruid, u16, euid)
{
return sys_setreuid(low2highuid(ruid), low2highuid(euid));
}
COMPAT_SYSCALL_DEFINE1(s390_setuid16, u16, uid)
{
return sys_setuid(low2highuid(uid));
}
COMPAT_SYSCALL_DEFINE3(s390_setresuid16, u16, ruid, u16, euid, u16, suid)
{
return sys_setresuid(low2highuid(ruid), low2highuid(euid),
low2highuid(suid));
}
COMPAT_SYSCALL_DEFINE3(s390_getresuid16, u16 __user *, ruidp,
u16 __user *, euidp, u16 __user *, suidp)
{
const struct cred *cred = current_cred();
int retval;
u16 ruid, euid, suid;
ruid = high2lowuid(from_kuid_munged(cred->user_ns, cred->uid));
euid = high2lowuid(from_kuid_munged(cred->user_ns, cred->euid));
suid = high2lowuid(from_kuid_munged(cred->user_ns, cred->suid));
if (!(retval = put_user(ruid, ruidp)) &&
!(retval = put_user(euid, euidp)))
retval = put_user(suid, suidp);
return retval;
}
COMPAT_SYSCALL_DEFINE3(s390_setresgid16, u16, rgid, u16, egid, u16, sgid)
{
return sys_setresgid(low2highgid(rgid), low2highgid(egid),
low2highgid(sgid));
}
COMPAT_SYSCALL_DEFINE3(s390_getresgid16, u16 __user *, rgidp,
u16 __user *, egidp, u16 __user *, sgidp)
{
const struct cred *cred = current_cred();
int retval;
u16 rgid, egid, sgid;
rgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->gid));
egid = high2lowgid(from_kgid_munged(cred->user_ns, cred->egid));
sgid = high2lowgid(from_kgid_munged(cred->user_ns, cred->sgid));
if (!(retval = put_user(rgid, rgidp)) &&
!(retval = put_user(egid, egidp)))
retval = put_user(sgid, sgidp);
return retval;
}
COMPAT_SYSCALL_DEFINE1(s390_setfsuid16, u16, uid)
{
return sys_setfsuid(low2highuid(uid));
}
COMPAT_SYSCALL_DEFINE1(s390_setfsgid16, u16, gid)
{
return sys_setfsgid(low2highgid(gid));
}
static int groups16_to_user(u16 __user *grouplist, struct group_info *group_info)
{
struct user_namespace *user_ns = current_user_ns();
int i;
u16 group;
kgid_t kgid;
for (i = 0; i < group_info->ngroups; i++) {
kgid = group_info->gid[i];
group = (u16)from_kgid_munged(user_ns, kgid);
if (put_user(group, grouplist+i))
return -EFAULT;
}
return 0;
}
static int groups16_from_user(struct group_info *group_info, u16 __user *grouplist)
{
struct user_namespace *user_ns = current_user_ns();
int i;
u16 group;
kgid_t kgid;
for (i = 0; i < group_info->ngroups; i++) {
if (get_user(group, grouplist+i))
return -EFAULT;
kgid = make_kgid(user_ns, (gid_t)group);
if (!gid_valid(kgid))
return -EINVAL;
group_info->gid[i] = kgid;
}
return 0;
}
COMPAT_SYSCALL_DEFINE2(s390_getgroups16, int, gidsetsize, u16 __user *, grouplist)
{
const struct cred *cred = current_cred();
int i;
if (gidsetsize < 0)
return -EINVAL;
get_group_info(cred->group_info);
i = cred->group_info->ngroups;
if (gidsetsize) {
if (i > gidsetsize) {
i = -EINVAL;
goto out;
}
if (groups16_to_user(grouplist, cred->group_info)) {
i = -EFAULT;
goto out;
}
}
out:
put_group_info(cred->group_info);
return i;
}
COMPAT_SYSCALL_DEFINE2(s390_setgroups16, int, gidsetsize, u16 __user *, grouplist)
{
struct group_info *group_info;
int retval;
if (!may_setgroups())
return -EPERM;
if ((unsigned)gidsetsize > NGROUPS_MAX)
return -EINVAL;
group_info = groups_alloc(gidsetsize);
if (!group_info)
return -ENOMEM;
retval = groups16_from_user(group_info, grouplist);
if (retval) {
put_group_info(group_info);
return retval;
}
groups_sort(group_info);
retval = set_current_groups(group_info);
put_group_info(group_info);
return retval;
}
COMPAT_SYSCALL_DEFINE0(s390_getuid16)
{
return high2lowuid(from_kuid_munged(current_user_ns(), current_uid()));
}
COMPAT_SYSCALL_DEFINE0(s390_geteuid16)
{
return high2lowuid(from_kuid_munged(current_user_ns(), current_euid()));
}
COMPAT_SYSCALL_DEFINE0(s390_getgid16)
{
return high2lowgid(from_kgid_munged(current_user_ns(), current_gid()));
}
COMPAT_SYSCALL_DEFINE0(s390_getegid16)
{
return high2lowgid(from_kgid_munged(current_user_ns(), current_egid()));
}
#ifdef CONFIG_SYSVIPC
COMPAT_SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, compat_ulong_t, second,
compat_ulong_t, third, compat_uptr_t, ptr)
{
if (call >> 16) /* hack for backward compatibility */
return -EINVAL;
return compat_sys_ipc(call, first, second, third, ptr, third);
return compat_ksys_ipc(call, first, second, third, ptr, third);
}
#endif

186
arch/s390/kernel/compat_wrapper.c
View File

@ -1,186 +0,0 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Compat system call wrappers.
*
* Copyright IBM Corp. 2014
*/
#include <linux/syscalls.h>
#include <linux/compat.h>
#include "entry.h"
#define COMPAT_SYSCALL_WRAP1(name, ...) \
COMPAT_SYSCALL_WRAPx(1, _##name, __VA_ARGS__)
#define COMPAT_SYSCALL_WRAP2(name, ...) \
COMPAT_SYSCALL_WRAPx(2, _##name, __VA_ARGS__)
#define COMPAT_SYSCALL_WRAP3(name, ...) \
COMPAT_SYSCALL_WRAPx(3, _##name, __VA_ARGS__)
#define COMPAT_SYSCALL_WRAP4(name, ...) \
COMPAT_SYSCALL_WRAPx(4, _##name, __VA_ARGS__)
#define COMPAT_SYSCALL_WRAP5(name, ...) \
COMPAT_SYSCALL_WRAPx(5, _##name, __VA_ARGS__)
#define COMPAT_SYSCALL_WRAP6(name, ...) \
COMPAT_SYSCALL_WRAPx(6, _##name, __VA_ARGS__)
#define __SC_COMPAT_TYPE(t, a) \
__typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
#define __SC_COMPAT_CAST(t, a) \
({ \
long __ReS = a; \
\
BUILD_BUG_ON((sizeof(t) > 4) && !__TYPE_IS_L(t) && \
!__TYPE_IS_UL(t) && !__TYPE_IS_PTR(t)); \
if (__TYPE_IS_L(t)) \
__ReS = (s32)a; \
if (__TYPE_IS_UL(t)) \
__ReS = (u32)a; \
if (__TYPE_IS_PTR(t)) \
__ReS = a & 0x7fffffff; \
(t)__ReS; \
})
/*
* The COMPAT_SYSCALL_WRAP macro generates system call wrappers to be used by
* compat tasks. These wrappers will only be used for system calls where only
* the system call arguments need sign or zero extension or zeroing of the upper
* 33 bits of pointers.
* Note: since the wrapper function will afterwards call a system call which
* again performs zero and sign extension for all system call arguments with
* a size of less than eight bytes, these compat wrappers only touch those
* system call arguments with a size of eight bytes ((unsigned) long and
* pointers). Zero and sign extension for e.g. int parameters will be done by
* the regular system call wrappers.
*/
#define COMPAT_SYSCALL_WRAPx(x, name, ...) \
asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
asmlinkage long notrace compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__));\
asmlinkage long notrace compat_sys##name(__MAP(x,__SC_COMPAT_TYPE,__VA_ARGS__)) \
{ \
return sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__)); \
}
COMPAT_SYSCALL_WRAP2(creat, const char __user *, pathname, umode_t, mode);
COMPAT_SYSCALL_WRAP2(link, const char __user *, oldname, const char __user *, newname);
COMPAT_SYSCALL_WRAP1(unlink, const char __user *, pathname);
COMPAT_SYSCALL_WRAP1(chdir, const char __user *, filename);
COMPAT_SYSCALL_WRAP3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev);
COMPAT_SYSCALL_WRAP2(chmod, const char __user *, filename, umode_t, mode);
COMPAT_SYSCALL_WRAP1(oldumount, char __user *, name);
COMPAT_SYSCALL_WRAP2(access, const char __user *, filename, int, mode);
COMPAT_SYSCALL_WRAP2(rename, const char __user *, oldname, const char __user *, newname);
COMPAT_SYSCALL_WRAP2(mkdir, const char __user *, pathname, umode_t, mode);
COMPAT_SYSCALL_WRAP1(rmdir, const char __user *, pathname);
COMPAT_SYSCALL_WRAP1(pipe, int __user *, fildes);
COMPAT_SYSCALL_WRAP1(brk, unsigned long, brk);
COMPAT_SYSCALL_WRAP2(signal, int, sig, __sighandler_t, handler);
COMPAT_SYSCALL_WRAP1(acct, const char __user *, name);
COMPAT_SYSCALL_WRAP2(umount, char __user *, name, int, flags);
COMPAT_SYSCALL_WRAP1(chroot, const char __user *, filename);
COMPAT_SYSCALL_WRAP3(sigsuspend, int, unused1, int, unused2, old_sigset_t, mask);
COMPAT_SYSCALL_WRAP2(sethostname, char __user *, name, int, len);
COMPAT_SYSCALL_WRAP2(symlink, const char __user *, old, const char __user *, new);
COMPAT_SYSCALL_WRAP3(readlink, const char __user *, path, char __user *, buf, int, bufsiz);
COMPAT_SYSCALL_WRAP1(uselib, const char __user *, library);
COMPAT_SYSCALL_WRAP2(swapon, const char __user *, specialfile, int, swap_flags);
COMPAT_SYSCALL_WRAP4(reboot, int, magic1, int, magic2, unsigned int, cmd, void __user *, arg);
COMPAT_SYSCALL_WRAP2(munmap, unsigned long, addr, size_t, len);
COMPAT_SYSCALL_WRAP3(syslog, int, type, char __user *, buf, int, len);
COMPAT_SYSCALL_WRAP1(swapoff, const char __user *, specialfile);
COMPAT_SYSCALL_WRAP2(setdomainname, char __user *, name, int, len);
COMPAT_SYSCALL_WRAP1(newuname, struct new_utsname __user *, name);
COMPAT_SYSCALL_WRAP3(mprotect, unsigned long, start, size_t, len, unsigned long, prot);
COMPAT_SYSCALL_WRAP3(init_module, void __user *, umod, unsigned long, len, const char __user *, uargs);
COMPAT_SYSCALL_WRAP2(delete_module, const char __user *, name_user, unsigned int, flags);
COMPAT_SYSCALL_WRAP4(quotactl, unsigned int, cmd, const char __user *, special, qid_t, id, void __user *, addr);
COMPAT_SYSCALL_WRAP2(bdflush, int, func, long, data);
COMPAT_SYSCALL_WRAP3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2);
COMPAT_SYSCALL_WRAP5(llseek, unsigned int, fd, unsigned long, high, unsigned long, low, loff_t __user *, result, unsigned int, whence);
COMPAT_SYSCALL_WRAP3(msync, unsigned long, start, size_t, len, int, flags);
COMPAT_SYSCALL_WRAP2(mlock, unsigned long, start, size_t, len);
COMPAT_SYSCALL_WRAP2(munlock, unsigned long, start, size_t, len);
COMPAT_SYSCALL_WRAP2(sched_setparam, pid_t, pid, struct sched_param __user *, param);
COMPAT_SYSCALL_WRAP2(sched_getparam, pid_t, pid, struct sched_param __user *, param);
COMPAT_SYSCALL_WRAP3(sched_setscheduler, pid_t, pid, int, policy, struct sched_param __user *, param);
COMPAT_SYSCALL_WRAP5(mremap, unsigned long, addr, unsigned long, old_len, unsigned long, new_len, unsigned long, flags, unsigned long, new_addr);
COMPAT_SYSCALL_WRAP3(poll, struct pollfd __user *, ufds, unsigned int, nfds, int, timeout);
COMPAT_SYSCALL_WRAP5(prctl, int, option, unsigned long, arg2, unsigned long, arg3, unsigned long, arg4, unsigned long, arg5);
COMPAT_SYSCALL_WRAP2(getcwd, char __user *, buf, unsigned long, size);
COMPAT_SYSCALL_WRAP2(capget, cap_user_header_t, header, cap_user_data_t, dataptr);
COMPAT_SYSCALL_WRAP2(capset, cap_user_header_t, header, const cap_user_data_t, data);
COMPAT_SYSCALL_WRAP3(lchown, const char __user *, filename, uid_t, user, gid_t, group);
COMPAT_SYSCALL_WRAP2(getgroups, int, gidsetsize, gid_t __user *, grouplist);
COMPAT_SYSCALL_WRAP2(setgroups, int, gidsetsize, gid_t __user *, grouplist);
COMPAT_SYSCALL_WRAP3(getresuid, uid_t __user *, ruid, uid_t __user *, euid, uid_t __user *, suid);
COMPAT_SYSCALL_WRAP3(getresgid, gid_t __user *, rgid, gid_t __user *, egid, gid_t __user *, sgid);
COMPAT_SYSCALL_WRAP3(chown, const char __user *, filename, uid_t, user, gid_t, group);
COMPAT_SYSCALL_WRAP2(pivot_root, const char __user *, new_root, const char __user *, put_old);
COMPAT_SYSCALL_WRAP3(mincore, unsigned long, start, size_t, len, unsigned char __user *, vec);
COMPAT_SYSCALL_WRAP3(madvise, unsigned long, start, size_t, len, int, behavior);
COMPAT_SYSCALL_WRAP5(setxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
COMPAT_SYSCALL_WRAP5(lsetxattr, const char __user *, path, const char __user *, name, const void __user *, value, size_t, size, int, flags);
COMPAT_SYSCALL_WRAP5(fsetxattr, int, fd, const char __user *, name, const void __user *, value, size_t, size, int, flags);
COMPAT_SYSCALL_WRAP3(getdents64, unsigned int, fd, struct linux_dirent64 __user *, dirent, unsigned int, count);
COMPAT_SYSCALL_WRAP4(getxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
COMPAT_SYSCALL_WRAP4(lgetxattr, const char __user *, path, const char __user *, name, void __user *, value, size_t, size);
COMPAT_SYSCALL_WRAP4(fgetxattr, int, fd, const char __user *, name, void __user *, value, size_t, size);
COMPAT_SYSCALL_WRAP3(listxattr, const char __user *, path, char __user *, list, size_t, size);
COMPAT_SYSCALL_WRAP3(llistxattr, const char __user *, path, char __user *, list, size_t, size);
COMPAT_SYSCALL_WRAP3(flistxattr, int, fd, char __user *, list, size_t, size);
COMPAT_SYSCALL_WRAP2(removexattr, const char __user *, path, const char __user *, name);
COMPAT_SYSCALL_WRAP2(lremovexattr, const char __user *, path, const char __user *, name);
COMPAT_SYSCALL_WRAP2(fremovexattr, int, fd, const char __user *, name);
COMPAT_SYSCALL_WRAP1(set_tid_address, int __user *, tidptr);
COMPAT_SYSCALL_WRAP4(epoll_ctl, int, epfd, int, op, int, fd, struct epoll_event __user *, event);
COMPAT_SYSCALL_WRAP4(epoll_wait, int, epfd, struct epoll_event __user *, events, int, maxevents, int, timeout);
COMPAT_SYSCALL_WRAP1(io_destroy, aio_context_t, ctx);
COMPAT_SYSCALL_WRAP3(io_cancel, aio_context_t, ctx_id, struct iocb __user *, iocb, struct io_event __user *, result);
COMPAT_SYSCALL_WRAP1(mq_unlink, const char __user *, name);
COMPAT_SYSCALL_WRAP5(add_key, const char __user *, tp, const char __user *, dsc, const void __user *, pld, size_t, len, key_serial_t, id);
COMPAT_SYSCALL_WRAP4(request_key, const char __user *, tp, const char __user *, dsc, const char __user *, info, key_serial_t, id);
COMPAT_SYSCALL_WRAP5(remap_file_pages, unsigned long, start, unsigned long, size, unsigned long, prot, unsigned long, pgoff, unsigned long, flags);
COMPAT_SYSCALL_WRAP3(inotify_add_watch, int, fd, const char __user *, path, u32, mask);
COMPAT_SYSCALL_WRAP3(mkdirat, int, dfd, const char __user *, pathname, umode_t, mode);
COMPAT_SYSCALL_WRAP4(mknodat, int, dfd, const char __user *, filename, umode_t, mode, unsigned, dev);
COMPAT_SYSCALL_WRAP5(fchownat, int, dfd, const char __user *, filename, uid_t, user, gid_t, group, int, flag);
COMPAT_SYSCALL_WRAP3(unlinkat, int, dfd, const char __user *, pathname, int, flag);
COMPAT_SYSCALL_WRAP4(renameat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname);
COMPAT_SYSCALL_WRAP5(linkat, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, int, flags);
COMPAT_SYSCALL_WRAP3(symlinkat, const char __user *, oldname, int, newdfd, const char __user *, newname);
COMPAT_SYSCALL_WRAP4(readlinkat, int, dfd, const char __user *, path, char __user *, buf, int, bufsiz);
COMPAT_SYSCALL_WRAP3(fchmodat, int, dfd, const char __user *, filename, umode_t, mode);
COMPAT_SYSCALL_WRAP3(faccessat, int, dfd, const char __user *, filename, int, mode);
COMPAT_SYSCALL_WRAP1(unshare, unsigned long, unshare_flags);
COMPAT_SYSCALL_WRAP6(splice, int, fd_in, loff_t __user *, off_in, int, fd_out, loff_t __user *, off_out, size_t, len, unsigned int, flags);
COMPAT_SYSCALL_WRAP4(tee, int, fdin, int, fdout, size_t, len, unsigned int, flags);
COMPAT_SYSCALL_WRAP3(getcpu, unsigned __user *, cpu, unsigned __user *, node, struct getcpu_cache __user *, cache);
COMPAT_SYSCALL_WRAP2(pipe2, int __user *, fildes, int, flags);
COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags);
COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, unsigned long, tls);
COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim);
COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag);
COMPAT_SYSCALL_WRAP5(kcmp, pid_t, pid1, pid_t, pid2, int, type, unsigned long, idx1, unsigned long, idx2);
COMPAT_SYSCALL_WRAP3(finit_module, int, fd, const char __user *, uargs, int, flags);
COMPAT_SYSCALL_WRAP3(sched_setattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, flags);
COMPAT_SYSCALL_WRAP4(sched_getattr, pid_t, pid, struct sched_attr __user *, attr, unsigned int, size, unsigned int, flags);
COMPAT_SYSCALL_WRAP5(renameat2, int, olddfd, const char __user *, oldname, int, newdfd, const char __user *, newname, unsigned int, flags);
COMPAT_SYSCALL_WRAP3(seccomp, unsigned int, op, unsigned int, flags, void __user *, uargs)
COMPAT_SYSCALL_WRAP3(getrandom, char __user *, buf, size_t, count, unsigned int, flags)
COMPAT_SYSCALL_WRAP2(memfd_create, const char __user *, uname, unsigned int, flags)
COMPAT_SYSCALL_WRAP3(bpf, int, cmd, union bpf_attr *, attr, unsigned int, size);
COMPAT_SYSCALL_WRAP3(s390_pci_mmio_write, const unsigned long, mmio_addr, const void __user *, user_buffer, const size_t, length);
COMPAT_SYSCALL_WRAP3(s390_pci_mmio_read, const unsigned long, mmio_addr, void __user *, user_buffer, const size_t, length);
COMPAT_SYSCALL_WRAP4(socketpair, int, family, int, type, int, protocol, int __user *, usockvec);
COMPAT_SYSCALL_WRAP3(bind, int, fd, struct sockaddr __user *, umyaddr, int, addrlen);
COMPAT_SYSCALL_WRAP3(connect, int, fd, struct sockaddr __user *, uservaddr, int, addrlen);
COMPAT_SYSCALL_WRAP4(accept4, int, fd, struct sockaddr __user *, upeer_sockaddr, int __user *, upeer_addrlen, int, flags);
COMPAT_SYSCALL_WRAP3(getsockname, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
COMPAT_SYSCALL_WRAP3(getpeername, int, fd, struct sockaddr __user *, usockaddr, int __user *, usockaddr_len);
COMPAT_SYSCALL_WRAP6(sendto, int, fd, void __user *, buff, size_t, len, unsigned int, flags, struct sockaddr __user *, addr, int, addr_len);
COMPAT_SYSCALL_WRAP3(mlock2, unsigned long, start, size_t, len, int, flags);
COMPAT_SYSCALL_WRAP6(copy_file_range, int, fd_in, loff_t __user *, off_in, int, fd_out, loff_t __user *, off_out, size_t, len, unsigned int, flags);
COMPAT_SYSCALL_WRAP2(s390_guarded_storage, int, command, struct gs_cb *, gs_cb);
COMPAT_SYSCALL_WRAP5(statx, int, dfd, const char __user *, path, unsigned, flags, unsigned, mask, struct statx __user *, buffer);
COMPAT_SYSCALL_WRAP4(s390_sthyi, unsigned long, code, void __user *, info, u64 __user *, rc, unsigned long, flags);
COMPAT_SYSCALL_WRAP5(kexec_file_load, int, kernel_fd, int, initrd_fd, unsigned long, cmdline_len, const char __user *, cmdline_ptr, unsigned long, flags)
COMPAT_SYSCALL_WRAP4(rseq, struct rseq __user *, rseq, u32, rseq_len, int, flags, u32, sig)

6
arch/s390/kernel/debug.c
View File

@ -1056,12 +1056,6 @@ int debug_register_view(debug_info_t *id, struct debug_view *view)
mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
pde = debugfs_create_file(view->name, mode, id->debugfs_root_entry,
id, &debug_file_ops);
if (!pde) {
pr_err("Registering view %s/%s failed due to out of "
"memory\n", id->name, view->name);
rc = -1;
goto out;
}
spin_lock_irqsave(&id->lock, flags);
for (i = 0; i < DEBUG_MAX_VIEWS; i++) {
if (!id->views[i])

1
arch/s390/kernel/diag.c
View File

@ -45,6 +45,7 @@ static const struct diag_desc diag_map[NR_DIAG_STAT] = {
[DIAG_STAT_X2FC] = { .code = 0x2fc, .name = "Guest Performance Data" },
[DIAG_STAT_X304] = { .code = 0x304, .name = "Partition-Resource Service" },
[DIAG_STAT_X308] = { .code = 0x308, .name = "List-Directed IPL" },
[DIAG_STAT_X318] = { .code = 0x318, .name = "CP Name and Version Codes" },
[DIAG_STAT_X500] = { .code = 0x500, .name = "Virtio Service" },
};

2
arch/s390/kernel/early.c
View File

@ -164,8 +164,6 @@ static noinline __init void setup_lowcore_early(void)
static noinline __init void setup_facility_list(void)
{
stfle(S390_lowcore.stfle_fac_list,
ARRAY_SIZE(S390_lowcore.stfle_fac_list));
memcpy(S390_lowcore.alt_stfle_fac_list,
S390_lowcore.stfle_fac_list,
sizeof(S390_lowcore.alt_stfle_fac_list));

4
arch/s390/kernel/entry.S
View File

@ -1512,7 +1512,7 @@ cleanup_critical:
.quad .Lsie_skip - .Lsie_entry
#endif
.section .rodata, "a"
#define SYSCALL(esame,emu) .long esame
#define SYSCALL(esame,emu) .long __s390x_ ## esame
.globl sys_call_table
sys_call_table:
#include "asm/syscall_table.h"
@ -1520,7 +1520,7 @@ sys_call_table:
#ifdef CONFIG_COMPAT
#define SYSCALL(esame,emu) .long emu
#define SYSCALL(esame,emu) .long __s390_ ## emu
.globl sys_call_table_emu
sys_call_table_emu:
#include "asm/syscall_table.h"

2
arch/s390/kernel/head64.S
View File

@ -27,8 +27,6 @@ ENTRY(startup_continue)
mvc 0(16,%r1),__LC_BOOT_CLOCK
larl %r13,.LPG1 # get base
lctlg %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
lg %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
# move IPL device to lowcore
larl %r0,boot_vdso_data
stg %r0,__LC_VDSO_PER_CPU
#

2
arch/s390/kernel/kdebugfs.c
View File

@ -9,8 +9,6 @@ EXPORT_SYMBOL(arch_debugfs_dir);
static int __init arch_kdebugfs_init(void)
{
arch_debugfs_dir = debugfs_create_dir("s390", NULL);
if (IS_ERR(arch_debugfs_dir))
arch_debugfs_dir = NULL;
return 0;
}
postcore_initcall(arch_kdebugfs_init);

224
arch/s390/kernel/perf_cpum_cf.c
View File

@ -10,73 +10,11 @@
#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/perf_event.h>
#include <linux/percpu.h>
#include <linux/notifier.h>
#include <linux/init.h>
#include <linux/export.h>
#include <asm/ctl_reg.h>
#include <asm/irq.h>
#include <asm/cpu_mf.h>
enum cpumf_ctr_set {
CPUMF_CTR_SET_BASIC = 0, /* Basic Counter Set */
CPUMF_CTR_SET_USER = 1, /* Problem-State Counter Set */
CPUMF_CTR_SET_CRYPTO = 2, /* Crypto-Activity Counter Set */
CPUMF_CTR_SET_EXT = 3, /* Extended Counter Set */
CPUMF_CTR_SET_MT_DIAG = 4, /* MT-diagnostic Counter Set */
/* Maximum number of counter sets */
CPUMF_CTR_SET_MAX,
};
#define CPUMF_LCCTL_ENABLE_SHIFT 16
#define CPUMF_LCCTL_ACTCTL_SHIFT 0
static const u64 cpumf_state_ctl[CPUMF_CTR_SET_MAX] = {
[CPUMF_CTR_SET_BASIC] = 0x02,
[CPUMF_CTR_SET_USER] = 0x04,
[CPUMF_CTR_SET_CRYPTO] = 0x08,
[CPUMF_CTR_SET_EXT] = 0x01,
[CPUMF_CTR_SET_MT_DIAG] = 0x20,
};
static void ctr_set_enable(u64 *state, int ctr_set)
{
*state |= cpumf_state_ctl[ctr_set] << CPUMF_LCCTL_ENABLE_SHIFT;
}
static void ctr_set_disable(u64 *state, int ctr_set)
{
*state &= ~(cpumf_state_ctl[ctr_set] << CPUMF_LCCTL_ENABLE_SHIFT);
}
static void ctr_set_start(u64 *state, int ctr_set)
{
*state |= cpumf_state_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT;
}
static void ctr_set_stop(u64 *state, int ctr_set)
{
*state &= ~(cpumf_state_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT);
}
/* Local CPUMF event structure */
struct cpu_hw_events {
struct cpumf_ctr_info info;
atomic_t ctr_set[CPUMF_CTR_SET_MAX];
u64 state, tx_state;
unsigned int flags;
unsigned int txn_flags;
};
static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = {
.ctr_set = {
[CPUMF_CTR_SET_BASIC] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_USER] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_CRYPTO] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_EXT] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_MT_DIAG] = ATOMIC_INIT(0),
},
.state = 0,
.flags = 0,
.txn_flags = 0,
};
#include <asm/cpu_mcf.h>
static enum cpumf_ctr_set get_counter_set(u64 event)
{
@ -98,11 +36,11 @@ static enum cpumf_ctr_set get_counter_set(u64 event)
static int validate_ctr_version(const struct hw_perf_event *hwc)
{
struct cpu_hw_events *cpuhw;
struct cpu_cf_events *cpuhw;
int err = 0;
u16 mtdiag_ctl;
cpuhw = &get_cpu_var(cpu_hw_events);
cpuhw = &get_cpu_var(cpu_cf_events);
/* check required version for counter sets */
switch (hwc->config_base) {
@ -135,7 +73,7 @@ static int validate_ctr_version(const struct hw_perf_event *hwc)
* Thus, the counters can only be used if SMT is on and the
* counter set is enabled and active.
*/
mtdiag_ctl = cpumf_state_ctl[CPUMF_CTR_SET_MT_DIAG];
mtdiag_ctl = cpumf_ctr_ctl[CPUMF_CTR_SET_MT_DIAG];
if (!((cpuhw->info.auth_ctl & mtdiag_ctl) &&
(cpuhw->info.enable_ctl & mtdiag_ctl) &&
(cpuhw->info.act_ctl & mtdiag_ctl)))
@ -143,28 +81,28 @@ static int validate_ctr_version(const struct hw_perf_event *hwc)
break;
}
put_cpu_var(cpu_hw_events);
put_cpu_var(cpu_cf_events);
return err;
}
static int validate_ctr_auth(const struct hw_perf_event *hwc)
{
struct cpu_hw_events *cpuhw;
struct cpu_cf_events *cpuhw;
u64 ctrs_state;
int err = 0;
cpuhw = &get_cpu_var(cpu_hw_events);
cpuhw = &get_cpu_var(cpu_cf_events);
/* Check authorization for cpu counter sets.
* If the particular CPU counter set is not authorized,
* return with -ENOENT in order to fall back to other
* PMUs that might suffice the event request.
*/
ctrs_state = cpumf_state_ctl[hwc->config_base];
ctrs_state = cpumf_ctr_ctl[hwc->config_base];
if (!(ctrs_state & cpuhw->info.auth_ctl))
err = -ENOENT;
put_cpu_var(cpu_hw_events);
put_cpu_var(cpu_cf_events);
return err;
}
@ -175,7 +113,7 @@ static int validate_ctr_auth(const struct hw_perf_event *hwc)
*/
static void cpumf_pmu_enable(struct pmu *pmu)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
int err;
if (cpuhw->flags & PMU_F_ENABLED)
@ -198,7 +136,7 @@ static void cpumf_pmu_enable(struct pmu *pmu)
*/
static void cpumf_pmu_disable(struct pmu *pmu)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
int err;
u64 inactive;
@ -222,86 +160,13 @@ static atomic_t num_events = ATOMIC_INIT(0);
/* Used to avoid races in calling reserve/release_cpumf_hardware */
static DEFINE_MUTEX(pmc_reserve_mutex);
/* CPU-measurement alerts for the counter facility */
static void cpumf_measurement_alert(struct ext_code ext_code,
unsigned int alert, unsigned long unused)
{
struct cpu_hw_events *cpuhw;
if (!(alert & CPU_MF_INT_CF_MASK))
return;
inc_irq_stat(IRQEXT_CMC);
cpuhw = this_cpu_ptr(&cpu_hw_events);
/* Measurement alerts are shared and might happen when the PMU
* is not reserved. Ignore these alerts in this case. */
if (!(cpuhw->flags & PMU_F_RESERVED))
return;
/* counter authorization change alert */
if (alert & CPU_MF_INT_CF_CACA)
qctri(&cpuhw->info);
/* loss of counter data alert */
if (alert & CPU_MF_INT_CF_LCDA)
pr_err("CPU[%i] Counter data was lost\n", smp_processor_id());
/* loss of MT counter data alert */
if (alert & CPU_MF_INT_CF_MTDA)
pr_warn("CPU[%i] MT counter data was lost\n",
smp_processor_id());
}
#define PMC_INIT 0
#define PMC_RELEASE 1
static void setup_pmc_cpu(void *flags)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
switch (*((int *) flags)) {
case PMC_INIT:
memset(&cpuhw->info, 0, sizeof(cpuhw->info));
qctri(&cpuhw->info);
cpuhw->flags |= PMU_F_RESERVED;
break;
case PMC_RELEASE:
cpuhw->flags &= ~PMU_F_RESERVED;
break;
}
/* Disable CPU counter sets */
lcctl(0);
}
/* Initialize the CPU-measurement facility */
static int reserve_pmc_hardware(void)
{
int flags = PMC_INIT;
on_each_cpu(setup_pmc_cpu, &flags, 1);
irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
return 0;
}
/* Release the CPU-measurement facility */
static void release_pmc_hardware(void)
{
int flags = PMC_RELEASE;
on_each_cpu(setup_pmc_cpu, &flags, 1);
irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
}
/* Release the PMU if event is the last perf event */
static void hw_perf_event_destroy(struct perf_event *event)
{
if (!atomic_add_unless(&num_events, -1, 1)) {
mutex_lock(&pmc_reserve_mutex);
if (atomic_dec_return(&num_events) == 0)
release_pmc_hardware();
__kernel_cpumcf_end();
mutex_unlock(&pmc_reserve_mutex);
}
}
@ -332,7 +197,7 @@ static int __hw_perf_event_init(struct perf_event *event)
struct perf_event_attr *attr = &event->attr;
struct hw_perf_event *hwc = &event->hw;
enum cpumf_ctr_set set;
int err;
int err = 0;
u64 ev;
switch (attr->type) {
@ -402,12 +267,14 @@ static int __hw_perf_event_init(struct perf_event *event)
/* Initialize for using the CPU-measurement counter facility */
if (!atomic_inc_not_zero(&num_events)) {
mutex_lock(&pmc_reserve_mutex);
if (atomic_read(&num_events) == 0 && reserve_pmc_hardware())
if (atomic_read(&num_events) == 0 && __kernel_cpumcf_begin())
err = -EBUSY;
else
atomic_inc(&num_events);
mutex_unlock(&pmc_reserve_mutex);
}
if (err)
return err;
event->destroy = hw_perf_event_destroy;
/* Finally, validate version and authorization of the counter set */
@ -488,7 +355,7 @@ static void cpumf_pmu_read(struct perf_event *event)
static void cpumf_pmu_start(struct perf_event *event, int flags)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct hw_perf_event *hwc = &event->hw;
if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED)))
@ -519,7 +386,7 @@ static void cpumf_pmu_start(struct perf_event *event, int flags)
static void cpumf_pmu_stop(struct perf_event *event, int flags)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct hw_perf_event *hwc = &event->hw;
if (!(hwc->state & PERF_HES_STOPPED)) {
@ -540,7 +407,7 @@ static void cpumf_pmu_stop(struct perf_event *event, int flags)
static int cpumf_pmu_add(struct perf_event *event, int flags)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
/* Check authorization for the counter set to which this
* counter belongs.
@ -564,7 +431,7 @@ static int cpumf_pmu_add(struct perf_event *event, int flags)
static void cpumf_pmu_del(struct perf_event *event, int flags)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
cpumf_pmu_stop(event, PERF_EF_UPDATE);
@ -592,7 +459,7 @@ static void cpumf_pmu_del(struct perf_event *event, int flags)
*/
static void cpumf_pmu_start_txn(struct pmu *pmu, unsigned int txn_flags)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
WARN_ON_ONCE(cpuhw->txn_flags); /* txn already in flight */
@ -612,7 +479,7 @@ static void cpumf_pmu_start_txn(struct pmu *pmu, unsigned int txn_flags)
static void cpumf_pmu_cancel_txn(struct pmu *pmu)
{
unsigned int txn_flags;
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
WARN_ON_ONCE(!cpuhw->txn_flags); /* no txn in flight */
@ -633,7 +500,7 @@ static void cpumf_pmu_cancel_txn(struct pmu *pmu)
*/
static int cpumf_pmu_commit_txn(struct pmu *pmu)
{
struct cpu_hw_events *cpuhw = this_cpu_ptr(&cpu_hw_events);
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
u64 state;
WARN_ON_ONCE(!cpuhw->txn_flags); /* no txn in flight */
@ -671,54 +538,17 @@ static struct pmu cpumf_pmu = {
.cancel_txn = cpumf_pmu_cancel_txn,
};
static int cpumf_pmf_setup(unsigned int cpu, int flags)
{
local_irq_disable();
setup_pmc_cpu(&flags);
local_irq_enable();
return 0;
}
static int s390_pmu_online_cpu(unsigned int cpu)
{
return cpumf_pmf_setup(cpu, PMC_INIT);
}
static int s390_pmu_offline_cpu(unsigned int cpu)
{
return cpumf_pmf_setup(cpu, PMC_RELEASE);
}
static int __init cpumf_pmu_init(void)
{
int rc;
if (!cpum_cf_avail())
if (!kernel_cpumcf_avail())
return -ENODEV;
/* clear bit 15 of cr0 to unauthorize problem-state to
* extract measurement counters */
ctl_clear_bit(0, 48);
/* register handler for measurement-alert interruptions */
rc = register_external_irq(EXT_IRQ_MEASURE_ALERT,
cpumf_measurement_alert);
if (rc) {
pr_err("Registering for CPU-measurement alerts "
"failed with rc=%i\n", rc);
return rc;
}
cpumf_pmu.attr_groups = cpumf_cf_event_group();
rc = perf_pmu_register(&cpumf_pmu, "cpum_cf", PERF_TYPE_RAW);
if (rc) {
if (rc)
pr_err("Registering the cpum_cf PMU failed with rc=%i\n", rc);
unregister_external_irq(EXT_IRQ_MEASURE_ALERT,
cpumf_measurement_alert);
return rc;
}
return cpuhp_setup_state(CPUHP_AP_PERF_S390_CF_ONLINE,
"perf/s390/cf:online",
s390_pmu_online_cpu, s390_pmu_offline_cpu);
return rc;
}
early_initcall(cpumf_pmu_init);
subsys_initcall(cpumf_pmu_init);

201
arch/s390/kernel/perf_cpum_cf_common.c Normal file
View File

@ -0,0 +1,201 @@
// SPDX-License-Identifier: GPL-2.0
/*
* CPU-Measurement Counter Facility Support - Common Layer
*
* Copyright IBM Corp. 2019
* Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
*/
#define KMSG_COMPONENT "cpum_cf_common"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/percpu.h>
#include <linux/notifier.h>
#include <linux/init.h>
#include <linux/export.h>
#include <asm/ctl_reg.h>
#include <asm/irq.h>
#include <asm/cpu_mcf.h>
/* Per-CPU event structure for the counter facility */
DEFINE_PER_CPU(struct cpu_cf_events, cpu_cf_events) = {
.ctr_set = {
[CPUMF_CTR_SET_BASIC] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_USER] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_CRYPTO] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_EXT] = ATOMIC_INIT(0),
[CPUMF_CTR_SET_MT_DIAG] = ATOMIC_INIT(0),
},
.alert = ATOMIC64_INIT(0),
.state = 0,
.flags = 0,
.txn_flags = 0,
};
/* Indicator whether the CPU-Measurement Counter Facility Support is ready */
static bool cpum_cf_initalized;
/* CPU-measurement alerts for the counter facility */
static void cpumf_measurement_alert(struct ext_code ext_code,
unsigned int alert, unsigned long unused)
{
struct cpu_cf_events *cpuhw;
if (!(alert & CPU_MF_INT_CF_MASK))
return;
inc_irq_stat(IRQEXT_CMC);
cpuhw = this_cpu_ptr(&cpu_cf_events);
/* Measurement alerts are shared and might happen when the PMU
* is not reserved. Ignore these alerts in this case. */
if (!(cpuhw->flags & PMU_F_RESERVED))
return;
/* counter authorization change alert */
if (alert & CPU_MF_INT_CF_CACA)
qctri(&cpuhw->info);
/* loss of counter data alert */
if (alert & CPU_MF_INT_CF_LCDA)
pr_err("CPU[%i] Counter data was lost\n", smp_processor_id());
/* loss of MT counter data alert */
if (alert & CPU_MF_INT_CF_MTDA)
pr_warn("CPU[%i] MT counter data was lost\n",
smp_processor_id());
/* store alert for special handling by in-kernel users */
atomic64_or(alert, &cpuhw->alert);
}
#define PMC_INIT 0
#define PMC_RELEASE 1
static void cpum_cf_setup_cpu(void *flags)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
switch (*((int *) flags)) {
case PMC_INIT:
memset(&cpuhw->info, 0, sizeof(cpuhw->info));
qctri(&cpuhw->info);
cpuhw->flags |= PMU_F_RESERVED;
break;
case PMC_RELEASE:
cpuhw->flags &= ~PMU_F_RESERVED;
break;
}
/* Disable CPU counter sets */
lcctl(0);
}
bool kernel_cpumcf_avail(void)
{
return cpum_cf_initalized;
}
EXPORT_SYMBOL(kernel_cpumcf_avail);
/* Reserve/release functions for sharing perf hardware */
static DEFINE_SPINLOCK(cpumcf_owner_lock);
static void *cpumcf_owner;
/* Initialize the CPU-measurement counter facility */
int __kernel_cpumcf_begin(void)
{
int flags = PMC_INIT;
int err = 0;
spin_lock(&cpumcf_owner_lock);
if (cpumcf_owner)
err = -EBUSY;
else
cpumcf_owner = __builtin_return_address(0);
spin_unlock(&cpumcf_owner_lock);
if (err)
return err;
on_each_cpu(cpum_cf_setup_cpu, &flags, 1);
irq_subclass_register(IRQ_SUBCLASS_MEASUREMENT_ALERT);
return 0;
}
EXPORT_SYMBOL(__kernel_cpumcf_begin);
/* Obtain the CPU-measurement alerts for the counter facility */
unsigned long kernel_cpumcf_alert(int clear)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
unsigned long alert;
alert = atomic64_read(&cpuhw->alert);
if (clear)
atomic64_set(&cpuhw->alert, 0);
return alert;
}
EXPORT_SYMBOL(kernel_cpumcf_alert);
/* Release the CPU-measurement counter facility */
void __kernel_cpumcf_end(void)
{
int flags = PMC_RELEASE;
on_each_cpu(cpum_cf_setup_cpu, &flags, 1);
irq_subclass_unregister(IRQ_SUBCLASS_MEASUREMENT_ALERT);
spin_lock(&cpumcf_owner_lock);
cpumcf_owner = NULL;
spin_unlock(&cpumcf_owner_lock);
}
EXPORT_SYMBOL(__kernel_cpumcf_end);
static int cpum_cf_setup(unsigned int cpu, int flags)
{
local_irq_disable();
cpum_cf_setup_cpu(&flags);
local_irq_enable();
return 0;
}
static int cpum_cf_online_cpu(unsigned int cpu)
{
return cpum_cf_setup(cpu, PMC_INIT);
}
static int cpum_cf_offline_cpu(unsigned int cpu)
{
return cpum_cf_setup(cpu, PMC_RELEASE);
}
static int __init cpum_cf_init(void)
{
int rc;
if (!cpum_cf_avail())
return -ENODEV;
/* clear bit 15 of cr0 to unauthorize problem-state to
* extract measurement counters */
ctl_clear_bit(0, 48);
/* register handler for measurement-alert interruptions */
rc = register_external_irq(EXT_IRQ_MEASURE_ALERT,
cpumf_measurement_alert);
if (rc) {
pr_err("Registering for CPU-measurement alerts "
"failed with rc=%i\n", rc);
return rc;
}
rc = cpuhp_setup_state(CPUHP_AP_PERF_S390_CF_ONLINE,
"perf/s390/cf:online",
cpum_cf_online_cpu, cpum_cf_offline_cpu);
if (!rc)
cpum_cf_initalized = true;
return rc;
}
early_initcall(cpum_cf_init);

693
arch/s390/kernel/perf_cpum_cf_diag.c Normal file
View File

@ -0,0 +1,693 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Performance event support for s390x - CPU-measurement Counter Sets
*
* Copyright IBM Corp. 2019
* Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
* Thomas Richer <tmricht@linux.ibm.com>
*/
#define KMSG_COMPONENT "cpum_cf_diag"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel.h>
#include <linux/kernel_stat.h>
#include <linux/percpu.h>
#include <linux/notifier.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/processor.h>
#include <asm/ctl_reg.h>
#include <asm/irq.h>
#include <asm/cpu_mcf.h>
#include <asm/timex.h>
#include <asm/debug.h>
#define CF_DIAG_CTRSET_DEF 0xfeef /* Counter set header mark */
static unsigned int cf_diag_cpu_speed;
static debug_info_t *cf_diag_dbg;
struct cf_diag_csd { /* Counter set data per CPU */
size_t used; /* Bytes used in data/start */
unsigned char start[PAGE_SIZE]; /* Counter set at event start */
unsigned char data[PAGE_SIZE]; /* Counter set at event delete */
};
DEFINE_PER_CPU(struct cf_diag_csd, cf_diag_csd);
/* Counter sets are stored as data stream in a page sized memory buffer and
* exported to user space via raw data attached to the event sample data.
* Each counter set starts with an eight byte header consisting of:
* - a two byte eye catcher (0xfeef)
* - a one byte counter set number
* - a two byte counter set size (indicates the number of counters in this set)
* - a three byte reserved value (must be zero) to make the header the same
* size as a counter value.
* All counter values are eight byte in size.
*
* All counter sets are followed by a 64 byte trailer.
* The trailer consists of a:
* - flag field indicating valid fields when corresponding bit set
* - the counter facility first and second version number
* - the CPU speed if nonzero
* - the time stamp the counter sets have been collected
* - the time of day (TOD) base value
* - the machine type.
*
* The counter sets are saved when the process is prepared to be executed on a
* CPU and saved again when the process is going to be removed from a CPU.
* The difference of both counter sets are calculated and stored in the event
* sample data area.
*/
struct cf_ctrset_entry { /* CPU-M CF counter set entry (8 byte) */
unsigned int def:16; /* 0-15 Data Entry Format */
unsigned int set:16; /* 16-31 Counter set identifier */
unsigned int ctr:16; /* 32-47 Number of stored counters */
unsigned int res1:16; /* 48-63 Reserved */
};
struct cf_trailer_entry { /* CPU-M CF_DIAG trailer (64 byte) */
/* 0 - 7 */
union {
struct {
unsigned int clock_base:1; /* TOD clock base set */
unsigned int speed:1; /* CPU speed set */
/* Measurement alerts */
unsigned int mtda:1; /* Loss of MT ctr. data alert */
unsigned int caca:1; /* Counter auth. change alert */
unsigned int lcda:1; /* Loss of counter data alert */
};
unsigned long flags; /* 0-63 All indicators */
};
/* 8 - 15 */
unsigned int cfvn:16; /* 64-79 Ctr First Version */
unsigned int csvn:16; /* 80-95 Ctr Second Version */
unsigned int cpu_speed:32; /* 96-127 CPU speed */
/* 16 - 23 */
unsigned long timestamp; /* 128-191 Timestamp (TOD) */
/* 24 - 55 */
union {
struct {
unsigned long progusage1;
unsigned long progusage2;
unsigned long progusage3;
unsigned long tod_base;
};
unsigned long progusage[4];
};
/* 56 - 63 */
unsigned int mach_type:16; /* Machine type */
unsigned int res1:16; /* Reserved */
unsigned int res2:32; /* Reserved */
};
/* Create the trailer data at the end of a page. */
static void cf_diag_trailer(struct cf_trailer_entry *te)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct cpuid cpuid;
te->cfvn = cpuhw->info.cfvn; /* Counter version numbers */
te->csvn = cpuhw->info.csvn;
get_cpu_id(&cpuid); /* Machine type */
te->mach_type = cpuid.machine;
te->cpu_speed = cf_diag_cpu_speed;
if (te->cpu_speed)
te->speed = 1;
te->clock_base = 1; /* Save clock base */
memcpy(&te->tod_base, &tod_clock_base[1], 8);
store_tod_clock((__u64 *)&te->timestamp);
}
/*
* Change the CPUMF state to active.
* Enable and activate the CPU-counter sets according
* to the per-cpu control state.
*/
static void cf_diag_enable(struct pmu *pmu)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
int err;
debug_sprintf_event(cf_diag_dbg, 5,
"%s pmu %p cpu %d flags %#x state %#llx\n",
__func__, pmu, smp_processor_id(), cpuhw->flags,
cpuhw->state);
if (cpuhw->flags & PMU_F_ENABLED)
return;
err = lcctl(cpuhw->state);
if (err) {
pr_err("Enabling the performance measuring unit "
"failed with rc=%x\n", err);
return;
}
cpuhw->flags |= PMU_F_ENABLED;
}
/*
* Change the CPUMF state to inactive.
* Disable and enable (inactive) the CPU-counter sets according
* to the per-cpu control state.
*/
static void cf_diag_disable(struct pmu *pmu)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
u64 inactive;
int err;
debug_sprintf_event(cf_diag_dbg, 5,
"%s pmu %p cpu %d flags %#x state %#llx\n",
__func__, pmu, smp_processor_id(), cpuhw->flags,
cpuhw->state);
if (!(cpuhw->flags & PMU_F_ENABLED))
return;
inactive = cpuhw->state & ~((1 << CPUMF_LCCTL_ENABLE_SHIFT) - 1);
err = lcctl(inactive);
if (err) {
pr_err("Disabling the performance measuring unit "
"failed with rc=%x\n", err);
return;
}
cpuhw->flags &= ~PMU_F_ENABLED;
}
/* Number of perf events counting hardware events */
static atomic_t cf_diag_events = ATOMIC_INIT(0);
/* Release the PMU if event is the last perf event */
static void cf_diag_perf_event_destroy(struct perf_event *event)
{
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d cf_diag_events %d\n",
__func__, event, event->cpu,
atomic_read(&cf_diag_events));
if (atomic_dec_return(&cf_diag_events) == 0)
__kernel_cpumcf_end();
}
/* Setup the event. Test for authorized counter sets and only include counter
* sets which are authorized at the time of the setup. Including unauthorized
* counter sets result in specification exception (and panic).
*/
static int __hw_perf_event_init(struct perf_event *event)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct perf_event_attr *attr = &event->attr;
enum cpumf_ctr_set i;
int err = 0;
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d authorized %#x\n", __func__,
event, event->cpu, cpuhw->info.auth_ctl);
event->hw.config = attr->config;
event->hw.config_base = 0;
local64_set(&event->count, 0);
/* Add all authorized counter sets to config_base */
for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i)
if (cpuhw->info.auth_ctl & cpumf_ctr_ctl[i])
event->hw.config_base |= cpumf_ctr_ctl[i];
/* No authorized counter sets, nothing to count/sample */
if (!event->hw.config_base) {
err = -EINVAL;
goto out;
}
/* Set sample_period to indicate sampling */
event->hw.sample_period = attr->sample_period;
local64_set(&event->hw.period_left, event->hw.sample_period);
event->hw.last_period = event->hw.sample_period;
out:
debug_sprintf_event(cf_diag_dbg, 5, "%s err %d config_base %#lx\n",
__func__, err, event->hw.config_base);
return err;
}
static int cf_diag_event_init(struct perf_event *event)
{
struct perf_event_attr *attr = &event->attr;
int err = -ENOENT;
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d config %#llx "
"sample_type %#llx cf_diag_events %d\n", __func__,
event, event->cpu, attr->config, attr->sample_type,
atomic_read(&cf_diag_events));
if (event->attr.config != PERF_EVENT_CPUM_CF_DIAG ||
event->attr.type != PERF_TYPE_RAW)
goto out;
/* Raw events are used to access counters directly,
* hence do not permit excludes.
* This event is usesless without PERF_SAMPLE_RAW to return counter set
* values as raw data.
*/
if (attr->exclude_kernel || attr->exclude_user || attr->exclude_hv ||
!(attr->sample_type & (PERF_SAMPLE_CPU | PERF_SAMPLE_RAW))) {
err = -EOPNOTSUPP;
goto out;
}
/* Initialize for using the CPU-measurement counter facility */
if (atomic_inc_return(&cf_diag_events) == 1) {
if (__kernel_cpumcf_begin()) {
atomic_dec(&cf_diag_events);
err = -EBUSY;
goto out;
}
}
event->destroy = cf_diag_perf_event_destroy;
err = __hw_perf_event_init(event);
if (unlikely(err))
event->destroy(event);
out:
debug_sprintf_event(cf_diag_dbg, 5, "%s err %d\n", __func__, err);
return err;
}
static void cf_diag_read(struct perf_event *event)
{
debug_sprintf_event(cf_diag_dbg, 5, "%s event %p\n", __func__, event);
}
/* Return the maximum possible counter set size (in number of 8 byte counters)
* depending on type and model number.
*/
static size_t cf_diag_ctrset_size(enum cpumf_ctr_set ctrset,
struct cpumf_ctr_info *info)
{
size_t ctrset_size = 0;
switch (ctrset) {
case CPUMF_CTR_SET_BASIC:
if (info->cfvn >= 1)
ctrset_size = 6;
break;
case CPUMF_CTR_SET_USER:
if (info->cfvn == 1)
ctrset_size = 6;
else if (info->cfvn >= 3)
ctrset_size = 2;
break;
case CPUMF_CTR_SET_CRYPTO:
ctrset_size = 16;
break;
case CPUMF_CTR_SET_EXT:
if (info->csvn == 1)
ctrset_size = 32;
else if (info->csvn == 2)
ctrset_size = 48;
else if (info->csvn >= 3)
ctrset_size = 128;
break;
case CPUMF_CTR_SET_MT_DIAG:
if (info->csvn > 3)
ctrset_size = 48;
break;
case CPUMF_CTR_SET_MAX:
break;
}
return ctrset_size;
}
/* Calculate memory needed to store all counter sets together with header and
* trailer data. This is independend of the counter set authorization which
* can vary depending on the configuration.
*/
static size_t cf_diag_ctrset_maxsize(struct cpumf_ctr_info *info)
{
size_t max_size = sizeof(struct cf_trailer_entry);
enum cpumf_ctr_set i;
for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i) {
size_t size = cf_diag_ctrset_size(i, info);
if (size)
max_size += size * sizeof(u64) +
sizeof(struct cf_ctrset_entry);
}
debug_sprintf_event(cf_diag_dbg, 5, "%s max_size %zu\n", __func__,
max_size);
return max_size;
}
/* Read a counter set. The counter set number determines which counter set and
* the CPUM-CF first and second version number determine the number of
* available counters in this counter set.
* Each counter set starts with header containing the counter set number and
* the number of 8 byte counters.
*
* The functions returns the number of bytes occupied by this counter set
* including the header.
* If there is no counter in the counter set, this counter set is useless and
* zero is returned on this case.
*/
static size_t cf_diag_getctrset(struct cf_ctrset_entry *ctrdata, int ctrset,
size_t room)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
size_t ctrset_size, need = 0;
int rc = 3; /* Assume write failure */
ctrdata->def = CF_DIAG_CTRSET_DEF;
ctrdata->set = ctrset;
ctrdata->res1 = 0;
ctrset_size = cf_diag_ctrset_size(ctrset, &cpuhw->info);
if (ctrset_size) { /* Save data */
need = ctrset_size * sizeof(u64) + sizeof(*ctrdata);
if (need <= room)
rc = ctr_stcctm(ctrset, ctrset_size,
(u64 *)(ctrdata + 1));
if (rc != 3)
ctrdata->ctr = ctrset_size;
else
need = 0;
}
debug_sprintf_event(cf_diag_dbg, 6,
"%s ctrset %d ctrset_size %zu cfvn %d csvn %d"
" need %zd rc:%d\n",
__func__, ctrset, ctrset_size, cpuhw->info.cfvn,
cpuhw->info.csvn, need, rc);
return need;
}
/* Read out all counter sets and save them in the provided data buffer.
* The last 64 byte host an artificial trailer entry.
*/
static size_t cf_diag_getctr(void *data, size_t sz, unsigned long auth)
{
struct cf_trailer_entry *trailer;
size_t offset = 0, done;
int i;
memset(data, 0, sz);
sz -= sizeof(*trailer); /* Always room for trailer */
for (i = CPUMF_CTR_SET_BASIC; i < CPUMF_CTR_SET_MAX; ++i) {
struct cf_ctrset_entry *ctrdata = data + offset;
if (!(auth & cpumf_ctr_ctl[i]))
continue; /* Counter set not authorized */
done = cf_diag_getctrset(ctrdata, i, sz - offset);
offset += done;
debug_sprintf_event(cf_diag_dbg, 6,
"%s ctrset %d offset %zu done %zu\n",
__func__, i, offset, done);
}
trailer = data + offset;
cf_diag_trailer(trailer);
return offset + sizeof(*trailer);
}
/* Calculate the difference for each counter in a counter set. */
static void cf_diag_diffctrset(u64 *pstart, u64 *pstop, int counters)
{
for (; --counters >= 0; ++pstart, ++pstop)
if (*pstop >= *pstart)
*pstop -= *pstart;
else
*pstop = *pstart - *pstop;
}
/* Scan the counter sets and calculate the difference of each counter
* in each set. The result is the increment of each counter during the
* period the counter set has been activated.
*
* Return true on success.
*/
static int cf_diag_diffctr(struct cf_diag_csd *csd, unsigned long auth)
{
struct cf_trailer_entry *trailer_start, *trailer_stop;
struct cf_ctrset_entry *ctrstart, *ctrstop;
size_t offset = 0;
auth &= (1 << CPUMF_LCCTL_ENABLE_SHIFT) - 1;
do {
ctrstart = (struct cf_ctrset_entry *)(csd->start + offset);
ctrstop = (struct cf_ctrset_entry *)(csd->data + offset);
if (memcmp(ctrstop, ctrstart, sizeof(*ctrstop))) {
pr_err("cpum_cf_diag counter set compare error "
"in set %i\n", ctrstart->set);
return 0;
}
auth &= ~cpumf_ctr_ctl[ctrstart->set];
if (ctrstart->def == CF_DIAG_CTRSET_DEF) {
cf_diag_diffctrset((u64 *)(ctrstart + 1),
(u64 *)(ctrstop + 1), ctrstart->ctr);
offset += ctrstart->ctr * sizeof(u64) +
sizeof(*ctrstart);
}
debug_sprintf_event(cf_diag_dbg, 6,
"%s set %d ctr %d offset %zu auth %lx\n",
__func__, ctrstart->set, ctrstart->ctr,
offset, auth);
} while (ctrstart->def && auth);
/* Save time_stamp from start of event in stop's trailer */
trailer_start = (struct cf_trailer_entry *)(csd->start + offset);
trailer_stop = (struct cf_trailer_entry *)(csd->data + offset);
trailer_stop->progusage[0] = trailer_start->timestamp;
return 1;
}
/* Create perf event sample with the counter sets as raw data. The sample
* is then pushed to the event subsystem and the function checks for
* possible event overflows. If an event overflow occurs, the PMU is
* stopped.
*
* Return non-zero if an event overflow occurred.
*/
static int cf_diag_push_sample(struct perf_event *event,
struct cf_diag_csd *csd)
{
struct perf_sample_data data;
struct perf_raw_record raw;
struct pt_regs regs;
int overflow;
/* Setup perf sample */
perf_sample_data_init(&data, 0, event->hw.last_period);
memset(&regs, 0, sizeof(regs));
memset(&raw, 0, sizeof(raw));
if (event->attr.sample_type & PERF_SAMPLE_CPU)
data.cpu_entry.cpu = event->cpu;
if (event->attr.sample_type & PERF_SAMPLE_RAW) {
raw.frag.size = csd->used;
raw.frag.data = csd->data;
raw.size = csd->used;
data.raw = &raw;
}
overflow = perf_event_overflow(event, &data, &regs);
debug_sprintf_event(cf_diag_dbg, 6,
"%s event %p cpu %d sample_type %#llx raw %d "
"ov %d\n", __func__, event, event->cpu,
event->attr.sample_type, raw.size, overflow);
if (overflow)
event->pmu->stop(event, 0);
perf_event_update_userpage(event);
return overflow;
}
static void cf_diag_start(struct perf_event *event, int flags)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct cf_diag_csd *csd = this_cpu_ptr(&cf_diag_csd);
struct hw_perf_event *hwc = &event->hw;
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d flags %#x hwc-state %#x\n",
__func__, event, event->cpu, flags, hwc->state);
if (WARN_ON_ONCE(!(hwc->state & PERF_HES_STOPPED)))
return;
/* (Re-)enable and activate all counter sets */
lcctl(0); /* Reset counter sets */
hwc->state = 0;
ctr_set_multiple_enable(&cpuhw->state, hwc->config_base);
lcctl(cpuhw->state); /* Enable counter sets */
csd->used = cf_diag_getctr(csd->start, sizeof(csd->start),
event->hw.config_base);
ctr_set_multiple_start(&cpuhw->state, hwc->config_base);
/* Function cf_diag_enable() starts the counter sets. */
}
static void cf_diag_stop(struct perf_event *event, int flags)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
struct cf_diag_csd *csd = this_cpu_ptr(&cf_diag_csd);
struct hw_perf_event *hwc = &event->hw;
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d flags %#x hwc-state %#x\n",
__func__, event, event->cpu, flags, hwc->state);
/* Deactivate all counter sets */
ctr_set_multiple_stop(&cpuhw->state, hwc->config_base);
local64_inc(&event->count);
csd->used = cf_diag_getctr(csd->data, sizeof(csd->data),
event->hw.config_base);
if (cf_diag_diffctr(csd, event->hw.config_base))
cf_diag_push_sample(event, csd);
hwc->state |= PERF_HES_STOPPED;
}
static int cf_diag_add(struct perf_event *event, int flags)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
int err = 0;
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d flags %#x cpuhw:%p\n",
__func__, event, event->cpu, flags, cpuhw);
if (cpuhw->flags & PMU_F_IN_USE) {
err = -EAGAIN;
goto out;
}
event->hw.state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
cpuhw->flags |= PMU_F_IN_USE;
if (flags & PERF_EF_START)
cf_diag_start(event, PERF_EF_RELOAD);
out:
debug_sprintf_event(cf_diag_dbg, 5, "%s err %d\n", __func__, err);
return err;
}
static void cf_diag_del(struct perf_event *event, int flags)
{
struct cpu_cf_events *cpuhw = this_cpu_ptr(&cpu_cf_events);
debug_sprintf_event(cf_diag_dbg, 5,
"%s event %p cpu %d flags %#x\n",
__func__, event, event->cpu, flags);
cf_diag_stop(event, PERF_EF_UPDATE);
ctr_set_multiple_stop(&cpuhw->state, event->hw.config_base);
ctr_set_multiple_disable(&cpuhw->state, event->hw.config_base);
cpuhw->flags &= ~PMU_F_IN_USE;
}
CPUMF_EVENT_ATTR(CF_DIAG, CF_DIAG, PERF_EVENT_CPUM_CF_DIAG);
static struct attribute *cf_diag_events_attr[] = {
CPUMF_EVENT_PTR(CF_DIAG, CF_DIAG),
NULL,
};
PMU_FORMAT_ATTR(event, "config:0-63");
static struct attribute *cf_diag_format_attr[] = {
&format_attr_event.attr,
NULL,
};
static struct attribute_group cf_diag_events_group = {
.name = "events",
.attrs = cf_diag_events_attr,
};
static struct attribute_group cf_diag_format_group = {
.name = "format",
.attrs = cf_diag_format_attr,
};
static const struct attribute_group *cf_diag_attr_groups[] = {
&cf_diag_events_group,
&cf_diag_format_group,
NULL,
};
/* Performance monitoring unit for s390x */
static struct pmu cf_diag = {
.task_ctx_nr = perf_sw_context,
.pmu_enable = cf_diag_enable,
.pmu_disable = cf_diag_disable,
.event_init = cf_diag_event_init,
.add = cf_diag_add,
.del = cf_diag_del,
.start = cf_diag_start,
.stop = cf_diag_stop,
.read = cf_diag_read,
.attr_groups = cf_diag_attr_groups
};
/* Get the CPU speed, try sampling facility first and CPU attributes second. */
static void cf_diag_get_cpu_speed(void)
{
if (cpum_sf_avail()) { /* Sampling facility first */
struct hws_qsi_info_block si;
memset(&si, 0, sizeof(si));
if (!qsi(&si)) {
cf_diag_cpu_speed = si.cpu_speed;
return;
}
}
if (test_facility(34)) { /* CPU speed extract static part */
unsigned long mhz = __ecag(ECAG_CPU_ATTRIBUTE, 0);
if (mhz != -1UL)
cf_diag_cpu_speed = mhz & 0xffffffff;
}
}
/* Initialize the counter set PMU to generate complete counter set data as
* event raw data. This relies on the CPU Measurement Counter Facility device
* already being loaded and initialized.
*/
static int __init cf_diag_init(void)
{
struct cpumf_ctr_info info;
size_t need;
int rc;
if (!kernel_cpumcf_avail() || !stccm_avail() || qctri(&info))
return -ENODEV;
cf_diag_get_cpu_speed();
/* Make sure the counter set data fits into predefined buffer. */
need = cf_diag_ctrset_maxsize(&info);
if (need > sizeof(((struct cf_diag_csd *)0)->start)) {
pr_err("Insufficient memory for PMU(cpum_cf_diag) need=%zu\n",
need);
return -ENOMEM;
}
/* Setup s390dbf facility */
cf_diag_dbg = debug_register(KMSG_COMPONENT, 2, 1, 128);
if (!cf_diag_dbg) {
pr_err("Registration of s390dbf(cpum_cf_diag) failed\n");
return -ENOMEM;
}
debug_register_view(cf_diag_dbg, &debug_sprintf_view);
rc = perf_pmu_register(&cf_diag, "cpum_cf_diag", PERF_TYPE_RAW);
if (rc) {
debug_unregister_view(cf_diag_dbg, &debug_sprintf_view);
debug_unregister(cf_diag_dbg);
pr_err("Registration of PMU(cpum_cf_diag) failed with rc=%i\n",
rc);
}
return rc;
}
arch_initcall(cf_diag_init);

1
arch/s390/kernel/perf_cpum_cf_events.c
View File

@ -6,6 +6,7 @@
#include <linux/slab.h>
#include <linux/perf_event.h>
#include <asm/cpu_mf.h>
/* BEGIN: CPUM_CF COUNTER DEFINITIONS =================================== */

60
arch/s390/kernel/setup.c
View File

@ -369,7 +369,7 @@ void __init arch_call_rest_init(void)
: : [_frame] "a" (frame));
}
static void __init setup_lowcore(void)
static void __init setup_lowcore_dat_off(void)
{
struct lowcore *lc;
@ -380,19 +380,16 @@ static void __init setup_lowcore(void)
lc = memblock_alloc_low(sizeof(*lc), sizeof(*lc));
lc->restart_psw.mask = PSW_KERNEL_BITS;
lc->restart_psw.addr = (unsigned long) restart_int_handler;
lc->external_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->external_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_MCHECK;
lc->external_new_psw.addr = (unsigned long) ext_int_handler;
lc->svc_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
lc->svc_new_psw.addr = (unsigned long) system_call;
lc->program_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->program_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_MCHECK;
lc->program_new_psw.addr = (unsigned long) pgm_check_handler;
lc->mcck_new_psw.mask = PSW_KERNEL_BITS;
lc->mcck_new_psw.addr = (unsigned long) mcck_int_handler;
lc->io_new_psw.mask = PSW_KERNEL_BITS |
PSW_MASK_DAT | PSW_MASK_MCHECK;
lc->io_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_MCHECK;
lc->io_new_psw.addr = (unsigned long) io_int_handler;
lc->clock_comparator = clock_comparator_max;
lc->nodat_stack = ((unsigned long) &init_thread_union)
@ -452,6 +449,16 @@ static void __init setup_lowcore(void)
lowcore_ptr[0] = lc;
}
static void __init setup_lowcore_dat_on(void)
{
__ctl_clear_bit(0, 28);
S390_lowcore.external_new_psw.mask |= PSW_MASK_DAT;
S390_lowcore.svc_new_psw.mask |= PSW_MASK_DAT;
S390_lowcore.program_new_psw.mask |= PSW_MASK_DAT;
S390_lowcore.io_new_psw.mask |= PSW_MASK_DAT;
__ctl_set_bit(0, 28);
}
static struct resource code_resource = {
.name = "Kernel code",
.flags = IORESOURCE_BUSY | IORESOURCE_SYSTEM_RAM,
@ -794,18 +801,9 @@ static void __init reserve_kernel(void)
{
unsigned long start_pfn = PFN_UP(__pa(_end));
#ifdef CONFIG_DMA_API_DEBUG
/*
* DMA_API_DEBUG code stumbles over addresses from the
* range [PARMAREA_END, _stext]. Mark the memory as reserved
* so it is not used for CONFIG_DMA_API_DEBUG=y.
*/
memblock_reserve(0, PFN_PHYS(start_pfn));
#else
memblock_reserve(0, PARMAREA_END);
memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn)
- (unsigned long)_stext);
#endif
}
static void __init setup_memory(void)
@ -989,6 +987,25 @@ static void __init setup_task_size(void)
arch_task_struct_size = task_size;
}
/*
* Issue diagnose 318 to set the control program name and
* version codes.
*/
static void __init setup_control_program_code(void)
{
union diag318_info diag318_info = {
.cpnc = CPNC_LINUX,
.cpvc_linux = 0,
.cpvc_distro = {0},
};
if (!sclp.has_diag318)
return;
diag_stat_inc(DIAG_STAT_X318);
asm volatile("diag %0,0,0x318\n" : : "d" (diag318_info.val));
}
/*
* Setup function called from init/main.c just after the banner
* was printed.
@ -1033,6 +1050,7 @@ void __init setup_arch(char **cmdline_p)
os_info_init();
setup_ipl();
setup_task_size();
setup_control_program_code();
/* Do some memory reservations *before* memory is added to memblock */
reserve_memory_end();
@ -1072,7 +1090,7 @@ void __init setup_arch(char **cmdline_p)
#endif
setup_resources();
setup_lowcore();
setup_lowcore_dat_off();
smp_fill_possible_mask();
cpu_detect_mhz_feature();
cpu_init();
@ -1085,6 +1103,12 @@ void __init setup_arch(char **cmdline_p)
*/
paging_init();
/*
* After paging_init created the kernel page table, the new PSWs
* in lowcore can now run with DAT enabled.
*/
setup_lowcore_dat_on();
/* Setup default console */
conmode_default();
set_preferred_console();

6
arch/s390/kernel/swsusp.S
View File

@ -124,13 +124,13 @@ ENTRY(swsusp_arch_resume)
lghi %r2,1
brasl %r14,arch_set_page_states
/* Deactivate DAT */
stnsm __SF_EMPTY(%r15),0xfb
/* Set prefix page to zero */
xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15)
spx __SF_EMPTY(%r15)
/* Deactivate DAT */
stnsm __SF_EMPTY(%r15),0xfb
/* Restore saved image */
larl %r1,restore_pblist
lg %r1,0(%r1)

16
arch/s390/kernel/sys_s390.c
View File

@ -58,6 +58,7 @@ out:
return error;
}
#ifdef CONFIG_SYSVIPC
/*
* sys_ipc() is the de-multiplexer for the SysV IPC calls.
*/
@ -74,19 +75,28 @@ SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, unsigned long, second,
* Therefore we can call the generic variant by simply passing the
* third parameter also as fifth parameter.
*/
return sys_ipc(call, first, second, third, ptr, third);
return ksys_ipc(call, first, second, third, ptr, third);
}
#endif /* CONFIG_SYSVIPC */
SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
{
unsigned int ret;
unsigned int ret = current->personality;
if (personality(current->personality) == PER_LINUX32 &&
personality(personality) == PER_LINUX)
personality |= PER_LINUX32;
ret = sys_personality(personality);
if (personality != 0xffffffff)
set_personality(personality);
if (personality(ret) == PER_LINUX32)
ret &= ~PER_LINUX32;
return ret;
}
SYSCALL_DEFINE0(ni_syscall)
{
return -ENOSYS;
}

286
arch/s390/kernel/syscalls/syscall.tbl
View File

@ -15,86 +15,86 @@
5 common open sys_open compat_sys_open
6 common close sys_close sys_close
7 common restart_syscall sys_restart_syscall sys_restart_syscall
8 common creat sys_creat compat_sys_creat
9 common link sys_link compat_sys_link
10 common unlink sys_unlink compat_sys_unlink
8 common creat sys_creat sys_creat
9 common link sys_link sys_link
10 common unlink sys_unlink sys_unlink
11 common execve sys_execve compat_sys_execve
12 common chdir sys_chdir compat_sys_chdir
12 common chdir sys_chdir sys_chdir
13 32 time - compat_sys_time
14 common mknod sys_mknod compat_sys_mknod
15 common chmod sys_chmod compat_sys_chmod
16 32 lchown - compat_sys_s390_lchown16
14 common mknod sys_mknod sys_mknod
15 common chmod sys_chmod sys_chmod
16 32 lchown - sys_lchown16
19 common lseek sys_lseek compat_sys_lseek
20 common getpid sys_getpid sys_getpid
21 common mount sys_mount compat_sys_mount
22 common umount sys_oldumount compat_sys_oldumount
23 32 setuid - compat_sys_s390_setuid16
24 32 getuid - compat_sys_s390_getuid16
22 common umount sys_oldumount sys_oldumount
23 32 setuid - sys_setuid16
24 32 getuid - sys_getuid16
25 32 stime - compat_sys_stime
26 common ptrace sys_ptrace compat_sys_ptrace
27 common alarm sys_alarm sys_alarm
29 common pause sys_pause sys_pause
30 common utime sys_utime compat_sys_utime
33 common access sys_access compat_sys_access
33 common access sys_access sys_access
34 common nice sys_nice sys_nice
36 common sync sys_sync sys_sync
37 common kill sys_kill sys_kill
38 common rename sys_rename compat_sys_rename
39 common mkdir sys_mkdir compat_sys_mkdir
40 common rmdir sys_rmdir compat_sys_rmdir
38 common rename sys_rename sys_rename
39 common mkdir sys_mkdir sys_mkdir
40 common rmdir sys_rmdir sys_rmdir
41 common dup sys_dup sys_dup
42 common pipe sys_pipe compat_sys_pipe
42 common pipe sys_pipe sys_pipe
43 common times sys_times compat_sys_times
45 common brk sys_brk compat_sys_brk
46 32 setgid - compat_sys_s390_setgid16
47 32 getgid - compat_sys_s390_getgid16
48 common signal sys_signal compat_sys_signal
49 32 geteuid - compat_sys_s390_geteuid16
50 32 getegid - compat_sys_s390_getegid16
51 common acct sys_acct compat_sys_acct
52 common umount2 sys_umount compat_sys_umount
45 common brk sys_brk sys_brk
46 32 setgid - sys_setgid16
47 32 getgid - sys_getgid16
48 common signal sys_signal sys_signal
49 32 geteuid - sys_geteuid16
50 32 getegid - sys_getegid16
51 common acct sys_acct sys_acct
52 common umount2 sys_umount sys_umount
54 common ioctl sys_ioctl compat_sys_ioctl
55 common fcntl sys_fcntl compat_sys_fcntl
57 common setpgid sys_setpgid sys_setpgid
60 common umask sys_umask sys_umask
61 common chroot sys_chroot compat_sys_chroot
61 common chroot sys_chroot sys_chroot
62 common ustat sys_ustat compat_sys_ustat
63 common dup2 sys_dup2 sys_dup2
64 common getppid sys_getppid sys_getppid
65 common getpgrp sys_getpgrp sys_getpgrp
66 common setsid sys_setsid sys_setsid
67 common sigaction sys_sigaction compat_sys_sigaction
70 32 setreuid - compat_sys_s390_setreuid16
71 32 setregid - compat_sys_s390_setregid16
72 common sigsuspend sys_sigsuspend compat_sys_sigsuspend
70 32 setreuid - sys_setreuid16
71 32 setregid - sys_setregid16
72 common sigsuspend sys_sigsuspend sys_sigsuspend
73 common sigpending sys_sigpending compat_sys_sigpending
74 common sethostname sys_sethostname compat_sys_sethostname
74 common sethostname sys_sethostname sys_sethostname
75 common setrlimit sys_setrlimit compat_sys_setrlimit
76 32 getrlimit - compat_sys_old_getrlimit
77 common getrusage sys_getrusage compat_sys_getrusage
78 common gettimeofday sys_gettimeofday compat_sys_gettimeofday
79 common settimeofday sys_settimeofday compat_sys_settimeofday
80 32 getgroups - compat_sys_s390_getgroups16
81 32 setgroups - compat_sys_s390_setgroups16
83 common symlink sys_symlink compat_sys_symlink
85 common readlink sys_readlink compat_sys_readlink
86 common uselib sys_uselib compat_sys_uselib
87 common swapon sys_swapon compat_sys_swapon
88 common reboot sys_reboot compat_sys_reboot
80 32 getgroups - sys_getgroups16
81 32 setgroups - sys_setgroups16
83 common symlink sys_symlink sys_symlink
85 common readlink sys_readlink sys_readlink
86 common uselib sys_uselib sys_uselib
87 common swapon sys_swapon sys_swapon
88 common reboot sys_reboot sys_reboot
89 common readdir - compat_sys_old_readdir
90 common mmap sys_old_mmap compat_sys_s390_old_mmap
91 common munmap sys_munmap compat_sys_munmap
91 common munmap sys_munmap sys_munmap
92 common truncate sys_truncate compat_sys_truncate
93 common ftruncate sys_ftruncate compat_sys_ftruncate
94 common fchmod sys_fchmod sys_fchmod
95 32 fchown - compat_sys_s390_fchown16
95 32 fchown - sys_fchown16
96 common getpriority sys_getpriority sys_getpriority
97 common setpriority sys_setpriority sys_setpriority
99 common statfs sys_statfs compat_sys_statfs
100 common fstatfs sys_fstatfs compat_sys_fstatfs
101 32 ioperm - -
102 common socketcall sys_socketcall compat_sys_socketcall
103 common syslog sys_syslog compat_sys_syslog
103 common syslog sys_syslog sys_syslog
104 common setitimer sys_setitimer compat_sys_setitimer
105 common getitimer sys_getitimer compat_sys_getitimer
106 common stat sys_newstat compat_sys_newstat
@ -104,63 +104,63 @@
111 common vhangup sys_vhangup sys_vhangup
112 common idle - -
114 common wait4 sys_wait4 compat_sys_wait4
115 common swapoff sys_swapoff compat_sys_swapoff
115 common swapoff sys_swapoff sys_swapoff
116 common sysinfo sys_sysinfo compat_sys_sysinfo
117 common ipc sys_s390_ipc compat_sys_s390_ipc
118 common fsync sys_fsync sys_fsync
119 common sigreturn sys_sigreturn compat_sys_sigreturn
120 common clone sys_clone compat_sys_clone
121 common setdomainname sys_setdomainname compat_sys_setdomainname
122 common uname sys_newuname compat_sys_newuname
120 common clone sys_clone sys_clone
121 common setdomainname sys_setdomainname sys_setdomainname
122 common uname sys_newuname sys_newuname
124 common adjtimex sys_adjtimex compat_sys_adjtimex
125 common mprotect sys_mprotect compat_sys_mprotect
125 common mprotect sys_mprotect sys_mprotect
126 common sigprocmask sys_sigprocmask compat_sys_sigprocmask
127 common create_module - -
128 common init_module sys_init_module compat_sys_init_module
129 common delete_module sys_delete_module compat_sys_delete_module
128 common init_module sys_init_module sys_init_module
129 common delete_module sys_delete_module sys_delete_module
130 common get_kernel_syms - -
131 common quotactl sys_quotactl compat_sys_quotactl
131 common quotactl sys_quotactl sys_quotactl
132 common getpgid sys_getpgid sys_getpgid
133 common fchdir sys_fchdir sys_fchdir
134 common bdflush sys_bdflush compat_sys_bdflush
135 common sysfs sys_sysfs compat_sys_sysfs
134 common bdflush sys_bdflush sys_bdflush
135 common sysfs sys_sysfs sys_sysfs
136 common personality sys_s390_personality sys_s390_personality
137 common afs_syscall - -
138 32 setfsuid - compat_sys_s390_setfsuid16
139 32 setfsgid - compat_sys_s390_setfsgid16
140 32 _llseek - compat_sys_llseek
138 32 setfsuid - sys_setfsuid16
139 32 setfsgid - sys_setfsgid16
140 32 _llseek - sys_llseek
141 common getdents sys_getdents compat_sys_getdents
142 32 _newselect - compat_sys_select
142 64 select sys_select -
143 common flock sys_flock sys_flock
144 common msync sys_msync compat_sys_msync
144 common msync sys_msync sys_msync
145 common readv sys_readv compat_sys_readv
146 common writev sys_writev compat_sys_writev
147 common getsid sys_getsid sys_getsid
148 common fdatasync sys_fdatasync sys_fdatasync
149 common _sysctl sys_sysctl compat_sys_sysctl
150 common mlock sys_mlock compat_sys_mlock
151 common munlock sys_munlock compat_sys_munlock
150 common mlock sys_mlock sys_mlock
151 common munlock sys_munlock sys_munlock
152 common mlockall sys_mlockall sys_mlockall
153 common munlockall sys_munlockall sys_munlockall
154 common sched_setparam sys_sched_setparam compat_sys_sched_setparam
155 common sched_getparam sys_sched_getparam compat_sys_sched_getparam
156 common sched_setscheduler sys_sched_setscheduler compat_sys_sched_setscheduler
154 common sched_setparam sys_sched_setparam sys_sched_setparam
155 common sched_getparam sys_sched_getparam sys_sched_getparam
156 common sched_setscheduler sys_sched_setscheduler sys_sched_setscheduler
157 common sched_getscheduler sys_sched_getscheduler sys_sched_getscheduler
158 common sched_yield sys_sched_yield sys_sched_yield
159 common sched_get_priority_max sys_sched_get_priority_max sys_sched_get_priority_max
160 common sched_get_priority_min sys_sched_get_priority_min sys_sched_get_priority_min
161 common sched_rr_get_interval sys_sched_rr_get_interval compat_sys_sched_rr_get_interval
162 common nanosleep sys_nanosleep compat_sys_nanosleep
163 common mremap sys_mremap compat_sys_mremap
164 32 setresuid - compat_sys_s390_setresuid16
165 32 getresuid - compat_sys_s390_getresuid16
163 common mremap sys_mremap sys_mremap
164 32 setresuid - sys_setresuid16
165 32 getresuid - sys_getresuid16
167 common query_module - -
168 common poll sys_poll compat_sys_poll
168 common poll sys_poll sys_poll
169 common nfsservctl - -
170 32 setresgid - compat_sys_s390_setresgid16
171 32 getresgid - compat_sys_s390_getresgid16
172 common prctl sys_prctl compat_sys_prctl
170 32 setresgid - sys_setresgid16
171 32 getresgid - sys_getresgid16
172 common prctl sys_prctl sys_prctl
173 common rt_sigreturn sys_rt_sigreturn compat_sys_rt_sigreturn
174 common rt_sigaction sys_rt_sigaction compat_sys_rt_sigaction
175 common rt_sigprocmask sys_rt_sigprocmask compat_sys_rt_sigprocmask
@ -170,10 +170,10 @@
179 common rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend
180 common pread64 sys_pread64 compat_sys_s390_pread64
181 common pwrite64 sys_pwrite64 compat_sys_s390_pwrite64
182 32 chown - compat_sys_s390_chown16
183 common getcwd sys_getcwd compat_sys_getcwd
184 common capget sys_capget compat_sys_capget
185 common capset sys_capset compat_sys_capset
182 32 chown - sys_chown16
183 common getcwd sys_getcwd sys_getcwd
184 common capget sys_capget sys_capget
185 common capset sys_capset sys_capset
186 common sigaltstack sys_sigaltstack compat_sys_sigaltstack
187 common sendfile sys_sendfile64 compat_sys_sendfile
188 common getpmsg - -
@ -187,7 +187,7 @@
195 32 stat64 - compat_sys_s390_stat64
196 32 lstat64 - compat_sys_s390_lstat64
197 32 fstat64 - compat_sys_s390_fstat64
198 32 lchown32 - compat_sys_lchown
198 32 lchown32 - sys_lchown
198 64 lchown sys_lchown -
199 32 getuid32 - sys_getuid
199 64 getuid sys_getuid -
@ -201,21 +201,21 @@
203 64 setreuid sys_setreuid -
204 32 setregid32 - sys_setregid
204 64 setregid sys_setregid -
205 32 getgroups32 - compat_sys_getgroups
205 32 getgroups32 - sys_getgroups
205 64 getgroups sys_getgroups -
206 32 setgroups32 - compat_sys_setgroups
206 32 setgroups32 - sys_setgroups
206 64 setgroups sys_setgroups -
207 32 fchown32 - sys_fchown
207 64 fchown sys_fchown -
208 32 setresuid32 - sys_setresuid
208 64 setresuid sys_setresuid -
209 32 getresuid32 - compat_sys_getresuid
209 32 getresuid32 - sys_getresuid
209 64 getresuid sys_getresuid -
210 32 setresgid32 - sys_setresgid
210 64 setresgid sys_setresgid -
211 32 getresgid32 - compat_sys_getresgid
211 32 getresgid32 - sys_getresgid
211 64 getresgid sys_getresgid -
212 32 chown32 - compat_sys_chown
212 32 chown32 - sys_chown
212 64 chown sys_chown -
213 32 setuid32 - sys_setuid
213 64 setuid sys_setuid -
@ -225,25 +225,25 @@
215 64 setfsuid sys_setfsuid -
216 32 setfsgid32 - sys_setfsgid
216 64 setfsgid sys_setfsgid -
217 common pivot_root sys_pivot_root compat_sys_pivot_root
218 common mincore sys_mincore compat_sys_mincore
219 common madvise sys_madvise compat_sys_madvise
220 common getdents64 sys_getdents64 compat_sys_getdents64
217 common pivot_root sys_pivot_root sys_pivot_root
218 common mincore sys_mincore sys_mincore
219 common madvise sys_madvise sys_madvise
220 common getdents64 sys_getdents64 sys_getdents64
221 32 fcntl64 - compat_sys_fcntl64
222 common readahead sys_readahead compat_sys_s390_readahead
223 32 sendfile64 - compat_sys_sendfile64
224 common setxattr sys_setxattr compat_sys_setxattr
225 common lsetxattr sys_lsetxattr compat_sys_lsetxattr
226 common fsetxattr sys_fsetxattr compat_sys_fsetxattr
227 common getxattr sys_getxattr compat_sys_getxattr
228 common lgetxattr sys_lgetxattr compat_sys_lgetxattr
229 common fgetxattr sys_fgetxattr compat_sys_fgetxattr
230 common listxattr sys_listxattr compat_sys_listxattr
231 common llistxattr sys_llistxattr compat_sys_llistxattr
232 common flistxattr sys_flistxattr compat_sys_flistxattr
233 common removexattr sys_removexattr compat_sys_removexattr
234 common lremovexattr sys_lremovexattr compat_sys_lremovexattr
235 common fremovexattr sys_fremovexattr compat_sys_fremovexattr
224 common setxattr sys_setxattr sys_setxattr
225 common lsetxattr sys_lsetxattr sys_lsetxattr
226 common fsetxattr sys_fsetxattr sys_fsetxattr
227 common getxattr sys_getxattr sys_getxattr
228 common lgetxattr sys_lgetxattr sys_lgetxattr
229 common fgetxattr sys_fgetxattr sys_fgetxattr
230 common listxattr sys_listxattr sys_listxattr
231 common llistxattr sys_llistxattr sys_llistxattr
232 common flistxattr sys_flistxattr sys_flistxattr
233 common removexattr sys_removexattr sys_removexattr
234 common lremovexattr sys_lremovexattr sys_lremovexattr
235 common fremovexattr sys_fremovexattr sys_fremovexattr
236 common gettid sys_gettid sys_gettid
237 common tkill sys_tkill sys_tkill
238 common futex sys_futex compat_sys_futex
@ -251,15 +251,15 @@
240 common sched_getaffinity sys_sched_getaffinity compat_sys_sched_getaffinity
241 common tgkill sys_tgkill sys_tgkill
243 common io_setup sys_io_setup compat_sys_io_setup
244 common io_destroy sys_io_destroy compat_sys_io_destroy
244 common io_destroy sys_io_destroy sys_io_destroy
245 common io_getevents sys_io_getevents compat_sys_io_getevents
246 common io_submit sys_io_submit compat_sys_io_submit
247 common io_cancel sys_io_cancel compat_sys_io_cancel
247 common io_cancel sys_io_cancel sys_io_cancel
248 common exit_group sys_exit_group sys_exit_group
249 common epoll_create sys_epoll_create sys_epoll_create
250 common epoll_ctl sys_epoll_ctl compat_sys_epoll_ctl
251 common epoll_wait sys_epoll_wait compat_sys_epoll_wait
252 common set_tid_address sys_set_tid_address compat_sys_set_tid_address
250 common epoll_ctl sys_epoll_ctl sys_epoll_ctl
251 common epoll_wait sys_epoll_wait sys_epoll_wait
252 common set_tid_address sys_set_tid_address sys_set_tid_address
253 common fadvise64 sys_fadvise64_64 compat_sys_s390_fadvise64
254 common timer_create sys_timer_create compat_sys_timer_create
255 common timer_settime sys_timer_settime compat_sys_timer_settime
@ -273,52 +273,52 @@
264 32 fadvise64_64 - compat_sys_s390_fadvise64_64
265 common statfs64 sys_statfs64 compat_sys_statfs64
266 common fstatfs64 sys_fstatfs64 compat_sys_fstatfs64
267 common remap_file_pages sys_remap_file_pages compat_sys_remap_file_pages
267 common remap_file_pages sys_remap_file_pages sys_remap_file_pages
268 common mbind sys_mbind compat_sys_mbind
269 common get_mempolicy sys_get_mempolicy compat_sys_get_mempolicy
270 common set_mempolicy sys_set_mempolicy compat_sys_set_mempolicy
271 common mq_open sys_mq_open compat_sys_mq_open
272 common mq_unlink sys_mq_unlink compat_sys_mq_unlink
272 common mq_unlink sys_mq_unlink sys_mq_unlink
273 common mq_timedsend sys_mq_timedsend compat_sys_mq_timedsend
274 common mq_timedreceive sys_mq_timedreceive compat_sys_mq_timedreceive
275 common mq_notify sys_mq_notify compat_sys_mq_notify
276 common mq_getsetattr sys_mq_getsetattr compat_sys_mq_getsetattr
277 common kexec_load sys_kexec_load compat_sys_kexec_load
278 common add_key sys_add_key compat_sys_add_key
279 common request_key sys_request_key compat_sys_request_key
278 common add_key sys_add_key sys_add_key
279 common request_key sys_request_key sys_request_key
280 common keyctl sys_keyctl compat_sys_keyctl
281 common waitid sys_waitid compat_sys_waitid
282 common ioprio_set sys_ioprio_set sys_ioprio_set
283 common ioprio_get sys_ioprio_get sys_ioprio_get
284 common inotify_init sys_inotify_init sys_inotify_init
285 common inotify_add_watch sys_inotify_add_watch compat_sys_inotify_add_watch
285 common inotify_add_watch sys_inotify_add_watch sys_inotify_add_watch
286 common inotify_rm_watch sys_inotify_rm_watch sys_inotify_rm_watch
287 common migrate_pages sys_migrate_pages compat_sys_migrate_pages
288 common openat sys_openat compat_sys_openat
289 common mkdirat sys_mkdirat compat_sys_mkdirat
290 common mknodat sys_mknodat compat_sys_mknodat
291 common fchownat sys_fchownat compat_sys_fchownat
289 common mkdirat sys_mkdirat sys_mkdirat
290 common mknodat sys_mknodat sys_mknodat
291 common fchownat sys_fchownat sys_fchownat
292 common futimesat sys_futimesat compat_sys_futimesat
293 32 fstatat64 - compat_sys_s390_fstatat64
293 64 newfstatat sys_newfstatat -
294 common unlinkat sys_unlinkat compat_sys_unlinkat
295 common renameat sys_renameat compat_sys_renameat
296 common linkat sys_linkat compat_sys_linkat
297 common symlinkat sys_symlinkat compat_sys_symlinkat
298 common readlinkat sys_readlinkat compat_sys_readlinkat
299 common fchmodat sys_fchmodat compat_sys_fchmodat
300 common faccessat sys_faccessat compat_sys_faccessat
294 common unlinkat sys_unlinkat sys_unlinkat
295 common renameat sys_renameat sys_renameat
296 common linkat sys_linkat sys_linkat
297 common symlinkat sys_symlinkat sys_symlinkat
298 common readlinkat sys_readlinkat sys_readlinkat
299 common fchmodat sys_fchmodat sys_fchmodat
300 common faccessat sys_faccessat sys_faccessat
301 common pselect6 sys_pselect6 compat_sys_pselect6
302 common ppoll sys_ppoll compat_sys_ppoll
303 common unshare sys_unshare compat_sys_unshare
303 common unshare sys_unshare sys_unshare
304 common set_robust_list sys_set_robust_list compat_sys_set_robust_list
305 common get_robust_list sys_get_robust_list compat_sys_get_robust_list
306 common splice sys_splice compat_sys_splice
306 common splice sys_splice sys_splice
307 common sync_file_range sys_sync_file_range compat_sys_s390_sync_file_range
308 common tee sys_tee compat_sys_tee
308 common tee sys_tee sys_tee
309 common vmsplice sys_vmsplice compat_sys_vmsplice
310 common move_pages sys_move_pages compat_sys_move_pages
311 common getcpu sys_getcpu compat_sys_getcpu
311 common getcpu sys_getcpu sys_getcpu
312 common epoll_pwait sys_epoll_pwait compat_sys_epoll_pwait
313 common utimes sys_utimes compat_sys_utimes
314 common fallocate sys_fallocate compat_sys_s390_fallocate
@ -332,17 +332,17 @@
322 common signalfd4 sys_signalfd4 compat_sys_signalfd4
323 common eventfd2 sys_eventfd2 sys_eventfd2
324 common inotify_init1 sys_inotify_init1 sys_inotify_init1
325 common pipe2 sys_pipe2 compat_sys_pipe2
325 common pipe2 sys_pipe2 sys_pipe2
326 common dup3 sys_dup3 sys_dup3
327 common epoll_create1 sys_epoll_create1 sys_epoll_create1
328 common preadv sys_preadv compat_sys_preadv
329 common pwritev sys_pwritev compat_sys_pwritev
330 common rt_tgsigqueueinfo sys_rt_tgsigqueueinfo compat_sys_rt_tgsigqueueinfo
331 common perf_event_open sys_perf_event_open compat_sys_perf_event_open
331 common perf_event_open sys_perf_event_open sys_perf_event_open
332 common fanotify_init sys_fanotify_init sys_fanotify_init
333 common fanotify_mark sys_fanotify_mark compat_sys_fanotify_mark
334 common prlimit64 sys_prlimit64 compat_sys_prlimit64
335 common name_to_handle_at sys_name_to_handle_at compat_sys_name_to_handle_at
334 common prlimit64 sys_prlimit64 sys_prlimit64
335 common name_to_handle_at sys_name_to_handle_at sys_name_to_handle_at
336 common open_by_handle_at sys_open_by_handle_at compat_sys_open_by_handle_at
337 common clock_adjtime sys_clock_adjtime compat_sys_clock_adjtime
338 common syncfs sys_syncfs sys_syncfs
@ -350,44 +350,44 @@
340 common process_vm_readv sys_process_vm_readv compat_sys_process_vm_readv
341 common process_vm_writev sys_process_vm_writev compat_sys_process_vm_writev
342 common s390_runtime_instr sys_s390_runtime_instr sys_s390_runtime_instr
343 common kcmp sys_kcmp compat_sys_kcmp
344 common finit_module sys_finit_module compat_sys_finit_module
345 common sched_setattr sys_sched_setattr compat_sys_sched_setattr
346 common sched_getattr sys_sched_getattr compat_sys_sched_getattr
347 common renameat2 sys_renameat2 compat_sys_renameat2
348 common seccomp sys_seccomp compat_sys_seccomp
349 common getrandom sys_getrandom compat_sys_getrandom
350 common memfd_create sys_memfd_create compat_sys_memfd_create
351 common bpf sys_bpf compat_sys_bpf
352 common s390_pci_mmio_write sys_s390_pci_mmio_write compat_sys_s390_pci_mmio_write
353 common s390_pci_mmio_read sys_s390_pci_mmio_read compat_sys_s390_pci_mmio_read
343 common kcmp sys_kcmp sys_kcmp
344 common finit_module sys_finit_module sys_finit_module
345 common sched_setattr sys_sched_setattr sys_sched_setattr
346 common sched_getattr sys_sched_getattr sys_sched_getattr
347 common renameat2 sys_renameat2 sys_renameat2
348 common seccomp sys_seccomp sys_seccomp
349 common getrandom sys_getrandom sys_getrandom
350 common memfd_create sys_memfd_create sys_memfd_create
351 common bpf sys_bpf sys_bpf
352 common s390_pci_mmio_write sys_s390_pci_mmio_write sys_s390_pci_mmio_write
353 common s390_pci_mmio_read sys_s390_pci_mmio_read sys_s390_pci_mmio_read
354 common execveat sys_execveat compat_sys_execveat
355 common userfaultfd sys_userfaultfd sys_userfaultfd
356 common membarrier sys_membarrier sys_membarrier
357 common recvmmsg sys_recvmmsg compat_sys_recvmmsg
358 common sendmmsg sys_sendmmsg compat_sys_sendmmsg
359 common socket sys_socket sys_socket
360 common socketpair sys_socketpair compat_sys_socketpair
361 common bind sys_bind compat_sys_bind
362 common connect sys_connect compat_sys_connect
360 common socketpair sys_socketpair sys_socketpair
361 common bind sys_bind sys_bind
362 common connect sys_connect sys_connect
363 common listen sys_listen sys_listen
364 common accept4 sys_accept4 compat_sys_accept4
364 common accept4 sys_accept4 sys_accept4
365 common getsockopt sys_getsockopt compat_sys_getsockopt
366 common setsockopt sys_setsockopt compat_sys_setsockopt
367 common getsockname sys_getsockname compat_sys_getsockname
368 common getpeername sys_getpeername compat_sys_getpeername
369 common sendto sys_sendto compat_sys_sendto
367 common getsockname sys_getsockname sys_getsockname
368 common getpeername sys_getpeername sys_getpeername
369 common sendto sys_sendto sys_sendto
370 common sendmsg sys_sendmsg compat_sys_sendmsg
371 common recvfrom sys_recvfrom compat_sys_recvfrom
372 common recvmsg sys_recvmsg compat_sys_recvmsg
373 common shutdown sys_shutdown sys_shutdown
374 common mlock2 sys_mlock2 compat_sys_mlock2
375 common copy_file_range sys_copy_file_range compat_sys_copy_file_range
374 common mlock2 sys_mlock2 sys_mlock2
375 common copy_file_range sys_copy_file_range sys_copy_file_range
376 common preadv2 sys_preadv2 compat_sys_preadv2
377 common pwritev2 sys_pwritev2 compat_sys_pwritev2
378 common s390_guarded_storage sys_s390_guarded_storage compat_sys_s390_guarded_storage
379 common statx sys_statx compat_sys_statx
380 common s390_sthyi sys_s390_sthyi compat_sys_s390_sthyi
381 common kexec_file_load sys_kexec_file_load compat_sys_kexec_file_load
378 common s390_guarded_storage sys_s390_guarded_storage sys_s390_guarded_storage
379 common statx sys_statx sys_statx
380 common s390_sthyi sys_s390_sthyi sys_s390_sthyi
381 common kexec_file_load sys_kexec_file_load sys_kexec_file_load
382 common io_pgetevents sys_io_pgetevents compat_sys_io_pgetevents
383 common rseq sys_rseq compat_sys_rseq
383 common rseq sys_rseq sys_rseq

2
arch/s390/kernel/sysinfo.c
View File

@ -545,8 +545,6 @@ static __init int stsi_init_debugfs(void)
int lvl, i;
stsi_root = debugfs_create_dir("stsi", arch_debugfs_dir);
if (IS_ERR_OR_NULL(stsi_root))
return 0;
lvl = stsi(NULL, 0, 0, 0);
if (lvl > 0)
stsi_0_0_0 = lvl;

4
arch/s390/kernel/vtime.c
View File

@ -69,7 +69,7 @@ static void update_mt_scaling(void)
u64 delta, fac, mult, div;
int i;
stcctm5(smp_cpu_mtid + 1, cycles_new);
stcctm(MT_DIAG, smp_cpu_mtid + 1, cycles_new);
cycles_old = this_cpu_ptr(mt_cycles);
fac = 1;
mult = div = 0;
@ -432,6 +432,6 @@ void vtime_init(void)
__this_cpu_write(mt_scaling_jiffies, jiffies);
__this_cpu_write(mt_scaling_mult, 1);
__this_cpu_write(mt_scaling_div, 1);
stcctm5(smp_cpu_mtid + 1, this_cpu_ptr(mt_cycles));
stcctm(MT_DIAG, smp_cpu_mtid + 1, this_cpu_ptr(mt_cycles));
}
}

28
arch/s390/lib/string.c
View File

@ -43,11 +43,13 @@ static inline char *__strnend(const char *s, size_t n)
*
* returns the length of @s
*/
#ifdef __HAVE_ARCH_STRLEN
size_t strlen(const char *s)
{
return __strend(s) - s;
}
EXPORT_SYMBOL(strlen);
#endif
/**
* strnlen - Find the length of a length-limited string
@ -56,11 +58,13 @@ EXPORT_SYMBOL(strlen);
*
* returns the minimum of the length of @s and @n
*/
#ifdef __HAVE_ARCH_STRNLEN
size_t strnlen(const char *s, size_t n)
{
return __strnend(s, n) - s;
}
EXPORT_SYMBOL(strnlen);
#endif
/**
* strcpy - Copy a %NUL terminated string
@ -69,6 +73,7 @@ EXPORT_SYMBOL(strnlen);
*
* returns a pointer to @dest
*/
#ifdef __HAVE_ARCH_STRCPY
char *strcpy(char *dest, const char *src)
{
register int r0 asm("0") = 0;
@ -81,6 +86,7 @@ char *strcpy(char *dest, const char *src)
return ret;
}
EXPORT_SYMBOL(strcpy);
#endif
/**
* strlcpy - Copy a %NUL terminated string into a sized buffer
@ -93,6 +99,7 @@ EXPORT_SYMBOL(strcpy);
* of course, the buffer size is zero). It does not pad
* out the result like strncpy() does.
*/
#ifdef __HAVE_ARCH_STRLCPY
size_t strlcpy(char *dest, const char *src, size_t size)
{
size_t ret = __strend(src) - src;
@ -105,6 +112,7 @@ size_t strlcpy(char *dest, const char *src, size_t size)
return ret;
}
EXPORT_SYMBOL(strlcpy);
#endif
/**
* strncpy - Copy a length-limited, %NUL-terminated string
@ -115,6 +123,7 @@ EXPORT_SYMBOL(strlcpy);
* The result is not %NUL-terminated if the source exceeds
* @n bytes.
*/
#ifdef __HAVE_ARCH_STRNCPY
char *strncpy(char *dest, const char *src, size_t n)
{
size_t len = __strnend(src, n) - src;
@ -123,6 +132,7 @@ char *strncpy(char *dest, const char *src, size_t n)
return dest;
}
EXPORT_SYMBOL(strncpy);
#endif
/**
* strcat - Append one %NUL-terminated string to another
@ -131,6 +141,7 @@ EXPORT_SYMBOL(strncpy);
*
* returns a pointer to @dest
*/
#ifdef __HAVE_ARCH_STRCAT
char *strcat(char *dest, const char *src)
{
register int r0 asm("0") = 0;
@ -146,6 +157,7 @@ char *strcat(char *dest, const char *src)
return ret;
}
EXPORT_SYMBOL(strcat);
#endif
/**
* strlcat - Append a length-limited, %NUL-terminated string to another
@ -153,6 +165,7 @@ EXPORT_SYMBOL(strcat);
* @src: The string to append to it
* @n: The size of the destination buffer.
*/
#ifdef __HAVE_ARCH_STRLCAT
size_t strlcat(char *dest, const char *src, size_t n)
{
size_t dsize = __strend(dest) - dest;
@ -170,6 +183,7 @@ size_t strlcat(char *dest, const char *src, size_t n)
return res;
}
EXPORT_SYMBOL(strlcat);
#endif
/**
* strncat - Append a length-limited, %NUL-terminated string to another
@ -182,6 +196,7 @@ EXPORT_SYMBOL(strlcat);
* Note that in contrast to strncpy, strncat ensures the result is
* terminated.
*/
#ifdef __HAVE_ARCH_STRNCAT
char *strncat(char *dest, const char *src, size_t n)
{
size_t len = __strnend(src, n) - src;
@ -192,6 +207,7 @@ char *strncat(char *dest, const char *src, size_t n)
return dest;
}
EXPORT_SYMBOL(strncat);
#endif
/**
* strcmp - Compare two strings
@ -202,6 +218,7 @@ EXPORT_SYMBOL(strncat);
* < 0 if @s1 is less than @s2
* > 0 if @s1 is greater than @s2
*/
#ifdef __HAVE_ARCH_STRCMP
int strcmp(const char *s1, const char *s2)
{
register int r0 asm("0") = 0;
@ -219,12 +236,14 @@ int strcmp(const char *s1, const char *s2)
return ret;
}
EXPORT_SYMBOL(strcmp);
#endif
/**
* strrchr - Find the last occurrence of a character in a string
* @s: The string to be searched
* @c: The character to search for
*/
#ifdef __HAVE_ARCH_STRRCHR
char *strrchr(const char *s, int c)
{
size_t len = __strend(s) - s;
@ -237,6 +256,7 @@ char *strrchr(const char *s, int c)
return NULL;
}
EXPORT_SYMBOL(strrchr);
#endif
static inline int clcle(const char *s1, unsigned long l1,
const char *s2, unsigned long l2)
@ -261,6 +281,7 @@ static inline int clcle(const char *s1, unsigned long l1,
* @s1: The string to be searched
* @s2: The string to search for
*/
#ifdef __HAVE_ARCH_STRSTR
char *strstr(const char *s1, const char *s2)
{
int l1, l2;
@ -280,6 +301,7 @@ char *strstr(const char *s1, const char *s2)
return NULL;
}
EXPORT_SYMBOL(strstr);
#endif
/**
* memchr - Find a character in an area of memory.
@ -290,6 +312,7 @@ EXPORT_SYMBOL(strstr);
* returns the address of the first occurrence of @c, or %NULL
* if @c is not found
*/
#ifdef __HAVE_ARCH_MEMCHR
void *memchr(const void *s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
@ -304,6 +327,7 @@ void *memchr(const void *s, int c, size_t n)
return (void *) ret;
}
EXPORT_SYMBOL(memchr);
#endif
/**
* memcmp - Compare two areas of memory
@ -311,6 +335,7 @@ EXPORT_SYMBOL(memchr);
* @s2: Another area of memory
* @count: The size of the area.
*/
#ifdef __HAVE_ARCH_MEMCMP
int memcmp(const void *s1, const void *s2, size_t n)
{
int ret;
@ -321,6 +346,7 @@ int memcmp(const void *s1, const void *s2, size_t n)
return ret;
}
EXPORT_SYMBOL(memcmp);
#endif
/**
* memscan - Find a character in an area of memory.
@ -331,6 +357,7 @@ EXPORT_SYMBOL(memcmp);
* returns the address of the first occurrence of @c, or 1 byte past
* the area if @c is not found
*/
#ifdef __HAVE_ARCH_MEMSCAN
void *memscan(void *s, int c, size_t n)
{
register int r0 asm("0") = (char) c;
@ -342,3 +369,4 @@ void *memscan(void *s, int c, size_t n)
return (void *) ret;
}
EXPORT_SYMBOL(memscan);
#endif

133
arch/s390/mm/extmem.c
View File

@ -28,12 +28,7 @@
#include <asm/cpcmd.h>
#include <asm/setup.h>
#define DCSS_LOADSHR 0x00
#define DCSS_LOADNSR 0x04
#define DCSS_PURGESEG 0x08
#define DCSS_FINDSEG 0x0c
#define DCSS_LOADNOLY 0x10
#define DCSS_SEGEXT 0x18
#define DCSS_LOADSHRX 0x20
#define DCSS_LOADNSRX 0x24
#define DCSS_FINDSEGX 0x2c
@ -53,20 +48,6 @@ struct qout64 {
struct qrange range[6];
};
struct qrange_old {
unsigned int start; /* last byte type */
unsigned int end; /* last byte reserved */
};
/* output area format for the Diag x'64' old subcode x'18' */
struct qout64_old {
int segstart;
int segend;
int segcnt;
int segrcnt;
struct qrange_old range[6];
};
struct qin64 {
char qopcode;
char rsrv1[3];
@ -95,52 +76,10 @@ static DEFINE_MUTEX(dcss_lock);
static LIST_HEAD(dcss_list);
static char *segtype_string[] = { "SW", "EW", "SR", "ER", "SN", "EN", "SC",
"EW/EN-MIXED" };
static int loadshr_scode, loadnsr_scode;
static int segext_scode, purgeseg_scode;
static int scode_set;
/* set correct Diag x'64' subcodes. */
static int
dcss_set_subcodes(void)
{
char *name = kmalloc(8, GFP_KERNEL | GFP_DMA);
unsigned long rx, ry;
int rc;
if (name == NULL)
return -ENOMEM;
rx = (unsigned long) name;
ry = DCSS_FINDSEGX;
strcpy(name, "dummy");
diag_stat_inc(DIAG_STAT_X064);
asm volatile(
" diag %0,%1,0x64\n"
"0: ipm %2\n"
" srl %2,28\n"
" j 2f\n"
"1: la %2,3\n"
"2:\n"
EX_TABLE(0b, 1b)
: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc", "memory");
kfree(name);
/* Diag x'64' new subcodes are supported, set to new subcodes */
if (rc != 3) {
loadshr_scode = DCSS_LOADSHRX;
loadnsr_scode = DCSS_LOADNSRX;
purgeseg_scode = DCSS_PURGESEG;
segext_scode = DCSS_SEGEXTX;
return 0;
}
/* Diag x'64' new subcodes are not supported, set to old subcodes */
loadshr_scode = DCSS_LOADNOLY;
loadnsr_scode = DCSS_LOADNSR;
purgeseg_scode = DCSS_PURGESEG;
segext_scode = DCSS_SEGEXT;
return 0;
}
static int loadshr_scode = DCSS_LOADSHRX;
static int loadnsr_scode = DCSS_LOADNSRX;
static int purgeseg_scode = DCSS_PURGESEG;
static int segext_scode = DCSS_SEGEXTX;
/*
* Create the 8 bytes, ebcdic VM segment name from
@ -196,32 +135,15 @@ dcss_diag(int *func, void *parameter,
unsigned long rx, ry;
int rc;
if (scode_set == 0) {
rc = dcss_set_subcodes();
if (rc < 0)
return rc;
scode_set = 1;
}
rx = (unsigned long) parameter;
ry = (unsigned long) *func;
/* 64-bit Diag x'64' new subcode, keep in 64-bit addressing mode */
diag_stat_inc(DIAG_STAT_X064);
if (*func > DCSS_SEGEXT)
asm volatile(
" diag %0,%1,0x64\n"
" ipm %2\n"
" srl %2,28\n"
: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");
/* 31-bit Diag x'64' old subcode, switch to 31-bit addressing mode */
else
asm volatile(
" sam31\n"
" diag %0,%1,0x64\n"
" sam64\n"
" ipm %2\n"
" srl %2,28\n"
: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");
asm volatile(
" diag %0,%1,0x64\n"
" ipm %2\n"
" srl %2,28\n"
: "+d" (rx), "+d" (ry), "=d" (rc) : : "cc");
*ret1 = rx;
*ret2 = ry;
return rc;
@ -271,31 +193,6 @@ query_segment_type (struct dcss_segment *seg)
goto out_free;
}
/* Only old format of output area of Diagnose x'64' is supported,
copy data for the new format. */
if (segext_scode == DCSS_SEGEXT) {
struct qout64_old *qout_old;
qout_old = kzalloc(sizeof(*qout_old), GFP_KERNEL | GFP_DMA);
if (qout_old == NULL) {
rc = -ENOMEM;
goto out_free;
}
memcpy(qout_old, qout, sizeof(struct qout64_old));
qout->segstart = (unsigned long) qout_old->segstart;
qout->segend = (unsigned long) qout_old->segend;
qout->segcnt = qout_old->segcnt;
qout->segrcnt = qout_old->segrcnt;
if (qout->segcnt > 6)
qout->segrcnt = 6;
for (i = 0; i < qout->segrcnt; i++) {
qout->range[i].start =
(unsigned long) qout_old->range[i].start;
qout->range[i].end =
(unsigned long) qout_old->range[i].end;
}
kfree(qout_old);
}
if (qout->segcnt > 6) {
rc = -EOPNOTSUPP;
goto out_free;
@ -410,11 +307,9 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long
if (rc < 0)
goto out_free;
if (loadshr_scode == DCSS_LOADSHRX) {
if (segment_overlaps_others(seg)) {
rc = -EBUSY;
goto out_free;
}
if (segment_overlaps_others(seg)) {
rc = -EBUSY;
goto out_free;
}
rc = vmem_add_mapping(seg->start_addr, seg->end - seg->start_addr + 1);
@ -472,11 +367,11 @@ __segment_load (char *name, int do_nonshared, unsigned long *addr, unsigned long
*addr = seg->start_addr;
*end = seg->end;
if (do_nonshared)
pr_info("DCSS %s of range %p to %p and type %s loaded as "
pr_info("DCSS %s of range %px to %px and type %s loaded as "
"exclusive-writable\n", name, (void*) seg->start_addr,
(void*) seg->end, segtype_string[seg->vm_segtype]);
else {
pr_info("DCSS %s of range %p to %p and type %s loaded in "
pr_info("DCSS %s of range %px to %px and type %s loaded in "
"shared access mode\n", name, (void*) seg->start_addr,
(void*) seg->end, segtype_string[seg->vm_segtype]);
}

2
arch/s390/mm/kasan_init.c
View File

@ -226,8 +226,6 @@ static void __init kasan_enable_dat(void)
static void __init kasan_early_detect_facilities(void)
{
__stfle(S390_lowcore.stfle_fac_list,
ARRAY_SIZE(S390_lowcore.stfle_fac_list));
if (test_facility(8)) {
has_edat = true;
__ctl_set_bit(0, 23);

33
arch/s390/mm/mmap.c
View File

@ -29,14 +29,6 @@ static unsigned long stack_maxrandom_size(void)
return STACK_RND_MASK << PAGE_SHIFT;
}
/*
* Top of mmap area (just below the process stack).
*
* Leave at least a ~32 MB hole.
*/
#define MIN_GAP (32*1024*1024)
#define MAX_GAP (STACK_TOP/6*5)
static inline int mmap_is_legacy(struct rlimit *rlim_stack)
{
if (current->personality & ADDR_COMPAT_LAYOUT)
@ -60,13 +52,26 @@ static inline unsigned long mmap_base(unsigned long rnd,
struct rlimit *rlim_stack)
{
unsigned long gap = rlim_stack->rlim_cur;
unsigned long pad = stack_maxrandom_size() + stack_guard_gap;
unsigned long gap_min, gap_max;
if (gap < MIN_GAP)
gap = MIN_GAP;
else if (gap > MAX_GAP)
gap = MAX_GAP;
gap &= PAGE_MASK;
return STACK_TOP - stack_maxrandom_size() - rnd - gap;
/* Values close to RLIM_INFINITY can overflow. */
if (gap + pad > gap)
gap += pad;
/*
* Top of mmap area (just below the process stack).
* Leave at least a ~32 MB hole.
*/
gap_min = 32 * 1024 * 1024UL;
gap_max = (STACK_TOP / 6) * 5;
if (gap < gap_min)
gap = gap_min;
else if (gap > gap_max)
gap = gap_max;
return PAGE_ALIGN(STACK_TOP - gap - rnd);
}
unsigned long

2
arch/s390/mm/pgtable.c
View File

@ -318,7 +318,6 @@ pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr,
}
return old;
}
EXPORT_SYMBOL(ptep_modify_prot_start);
void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
@ -337,7 +336,6 @@ void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
}
preempt_enable();
}
EXPORT_SYMBOL(ptep_modify_prot_commit);
static inline void pmdp_idte_local(struct mm_struct *mm,
unsigned long addr, pmd_t *pmdp)

22
arch/s390/pci/pci.c
View File

@ -285,7 +285,7 @@ void __iomem *pci_iomap_range(struct pci_dev *pdev,
struct zpci_dev *zdev = to_zpci(pdev);
int idx;
if (!pci_resource_len(pdev, bar))
if (!pci_resource_len(pdev, bar) || bar >= PCI_BAR_COUNT)
return NULL;
idx = zdev->bars[bar].map_idx;
@ -484,6 +484,15 @@ void arch_teardown_msi_irqs(struct pci_dev *pdev)
}
}
#ifdef CONFIG_PCI_IOV
static struct resource iov_res = {
.name = "PCI IOV res",
.start = 0,
.end = -1,
.flags = IORESOURCE_MEM,
};
#endif
static void zpci_map_resources(struct pci_dev *pdev)
{
resource_size_t len;
@ -497,6 +506,17 @@ static void zpci_map_resources(struct pci_dev *pdev)
(resource_size_t __force) pci_iomap(pdev, i, 0);
pdev->resource[i].end = pdev->resource[i].start + len - 1;
}
#ifdef CONFIG_PCI_IOV
i = PCI_IOV_RESOURCES;
for (; i < PCI_SRIOV_NUM_BARS + PCI_IOV_RESOURCES; i++) {
len = pci_resource_len(pdev, i);
if (!len)
continue;
pdev->resource[i].parent = &iov_res;
}
#endif
}
static void zpci_unmap_resources(struct pci_dev *pdev)

13
arch/s390/pci/pci_debug.c
View File

@ -172,21 +172,14 @@ static const struct file_operations debugfs_pci_perf_fops = {
void zpci_debug_init_device(struct zpci_dev *zdev, const char *name)
{
zdev->debugfs_dev = debugfs_create_dir(name, debugfs_root);
if (IS_ERR(zdev->debugfs_dev))
zdev->debugfs_dev = NULL;
zdev->debugfs_perf = debugfs_create_file("statistics",
S_IFREG | S_IRUGO | S_IWUSR,
zdev->debugfs_dev, zdev,
&debugfs_pci_perf_fops);
if (IS_ERR(zdev->debugfs_perf))
zdev->debugfs_perf = NULL;
debugfs_create_file("statistics", S_IFREG | S_IRUGO | S_IWUSR,
zdev->debugfs_dev, zdev, &debugfs_pci_perf_fops);
}
void zpci_debug_exit_device(struct zpci_dev *zdev)
{
debugfs_remove(zdev->debugfs_perf);
debugfs_remove(zdev->debugfs_dev);
debugfs_remove_recursive(zdev->debugfs_dev);
}
int __init zpci_debug_init(void)

19
drivers/s390/block/dasd.c
View File

@ -3965,13 +3965,11 @@ int dasd_generic_restore_device(struct ccw_device *cdev)
EXPORT_SYMBOL_GPL(dasd_generic_restore_device);
static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
void *rdc_buffer,
int rdc_buffer_size,
int magic)
{
struct dasd_ccw_req *cqr;
struct ccw1 *ccw;
unsigned long *idaw;
cqr = dasd_smalloc_request(magic, 1 /* RDC */, rdc_buffer_size, device,
NULL);
@ -3986,16 +3984,8 @@ static struct dasd_ccw_req *dasd_generic_build_rdc(struct dasd_device *device,
ccw = cqr->cpaddr;
ccw->cmd_code = CCW_CMD_RDC;
if (idal_is_needed(rdc_buffer, rdc_buffer_size)) {
idaw = (unsigned long *) (cqr->data);
ccw->cda = (__u32)(addr_t) idaw;
ccw->flags = CCW_FLAG_IDA;
idaw = idal_create_words(idaw, rdc_buffer, rdc_buffer_size);
} else {
ccw->cda = (__u32)(addr_t) rdc_buffer;
ccw->flags = 0;
}
ccw->cda = (__u32)(addr_t) cqr->data;
ccw->flags = 0;
ccw->count = rdc_buffer_size;
cqr->startdev = device;
cqr->memdev = device;
@ -4013,12 +4003,13 @@ int dasd_generic_read_dev_chars(struct dasd_device *device, int magic,
int ret;
struct dasd_ccw_req *cqr;
cqr = dasd_generic_build_rdc(device, rdc_buffer, rdc_buffer_size,
magic);
cqr = dasd_generic_build_rdc(device, rdc_buffer_size, magic);
if (IS_ERR(cqr))
return PTR_ERR(cqr);
ret = dasd_sleep_on(cqr);
if (ret == 0)
memcpy(rdc_buffer, cqr->data, rdc_buffer_size);
dasd_sfree_request(cqr, cqr->memdev);
return ret;
}

4
drivers/s390/char/sclp.h
View File

@ -195,7 +195,9 @@ struct read_info_sccb {
u16 hcpua; /* 120-121 */
u8 _pad_122[124 - 122]; /* 122-123 */
u32 hmfai; /* 124-127 */
u8 _pad_128[4096 - 128]; /* 128-4095 */
u8 _pad_128[134 - 128]; /* 128-133 */
u8 byte_134; /* 134 */
u8 _pad_135[4096 - 135]; /* 135-4095 */
} __packed __aligned(PAGE_SIZE);
struct read_storage_sccb {

2
drivers/s390/char/sclp_early.c
View File

@ -44,6 +44,8 @@ static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb)
S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
if (sccb->fac91 & 0x40)
S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_GUEST;
if (sccb->cpuoff > 134)
sclp.has_diag318 = !!(sccb->byte_134 & 0x80);
sclp.rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
sclp.rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
sclp.rzm <<= 20;

6
drivers/s390/cio/qdio_setup.c
View File

@ -181,7 +181,7 @@ static void setup_queues_misc(struct qdio_q *q, struct qdio_irq *irq_ptr,
}
static void setup_storage_lists(struct qdio_q *q, struct qdio_irq *irq_ptr,
void **sbals_array, int i)
struct qdio_buffer **sbals_array, int i)
{
struct qdio_q *prev;
int j;
@ -212,8 +212,8 @@ static void setup_queues(struct qdio_irq *irq_ptr,
struct qdio_initialize *qdio_init)
{
struct qdio_q *q;
void **input_sbal_array = qdio_init->input_sbal_addr_array;
void **output_sbal_array = qdio_init->output_sbal_addr_array;
struct qdio_buffer **input_sbal_array = qdio_init->input_sbal_addr_array;
struct qdio_buffer **output_sbal_array = qdio_init->output_sbal_addr_array;
struct qdio_outbuf_state *output_sbal_state_array =
qdio_init->output_sbal_state_array;
int i;

55
drivers/s390/cio/vfio_ccw_cp.c
View File

@ -283,6 +283,33 @@ static long copy_ccw_from_iova(struct channel_program *cp,
#define ccw_is_chain(_ccw) ((_ccw)->flags & (CCW_FLAG_CC | CCW_FLAG_DC))
/*
* is_cpa_within_range()
*
* @cpa: channel program address being questioned
* @head: address of the beginning of a CCW chain
* @len: number of CCWs within the chain
*
* Determine whether the address of a CCW (whether a new chain,
* or the target of a TIC) falls within a range (including the end points).
*
* Returns 1 if yes, 0 if no.
*/
static inline int is_cpa_within_range(u32 cpa, u32 head, int len)
{
u32 tail = head + (len - 1) * sizeof(struct ccw1);
return (head <= cpa && cpa <= tail);
}
static inline int is_tic_within_range(struct ccw1 *ccw, u32 head, int len)
{
if (!ccw_is_tic(ccw))
return 0;
return is_cpa_within_range(ccw->cda, head, len);
}
static struct ccwchain *ccwchain_alloc(struct channel_program *cp, int len)
{
struct ccwchain *chain;
@ -392,7 +419,15 @@ static int ccwchain_calc_length(u64 iova, struct channel_program *cp)
return -EOPNOTSUPP;
}
if ((!ccw_is_chain(ccw)) && (!ccw_is_tic(ccw)))
/*
* We want to keep counting if the current CCW has the
* command-chaining flag enabled, or if it is a TIC CCW
* that loops back into the current chain. The latter
* is used for device orientation, where the CCW PRIOR to
* the TIC can either jump to the TIC or a CCW immediately
* after the TIC, depending on the results of its operation.
*/
if (!ccw_is_chain(ccw) && !is_tic_within_range(ccw, iova, cnt))
break;
ccw++;
@ -408,13 +443,11 @@ static int ccwchain_calc_length(u64 iova, struct channel_program *cp)
static int tic_target_chain_exists(struct ccw1 *tic, struct channel_program *cp)
{
struct ccwchain *chain;
u32 ccw_head, ccw_tail;
u32 ccw_head;
list_for_each_entry(chain, &cp->ccwchain_list, next) {
ccw_head = chain->ch_iova;
ccw_tail = ccw_head + (chain->ch_len - 1) * sizeof(struct ccw1);
if ((ccw_head <= tic->cda) && (tic->cda <= ccw_tail))
if (is_cpa_within_range(tic->cda, ccw_head, chain->ch_len))
return 1;
}
@ -481,13 +514,11 @@ static int ccwchain_fetch_tic(struct ccwchain *chain,
{
struct ccw1 *ccw = chain->ch_ccw + idx;
struct ccwchain *iter;
u32 ccw_head, ccw_tail;
u32 ccw_head;
list_for_each_entry(iter, &cp->ccwchain_list, next) {
ccw_head = iter->ch_iova;
ccw_tail = ccw_head + (iter->ch_len - 1) * sizeof(struct ccw1);
if ((ccw_head <= ccw->cda) && (ccw->cda <= ccw_tail)) {
if (is_cpa_within_range(ccw->cda, ccw_head, iter->ch_len)) {
ccw->cda = (__u32) (addr_t) (((char *)iter->ch_ccw) +
(ccw->cda - ccw_head));
return 0;
@ -829,7 +860,7 @@ void cp_update_scsw(struct channel_program *cp, union scsw *scsw)
{
struct ccwchain *chain;
u32 cpa = scsw->cmd.cpa;
u32 ccw_head, ccw_tail;
u32 ccw_head;
/*
* LATER:
@ -839,9 +870,7 @@ void cp_update_scsw(struct channel_program *cp, union scsw *scsw)
*/
list_for_each_entry(chain, &cp->ccwchain_list, next) {
ccw_head = (u32)(u64)chain->ch_ccw;
ccw_tail = (u32)(u64)(chain->ch_ccw + chain->ch_len - 1);
if ((ccw_head <= cpa) && (cpa <= ccw_tail)) {
if (is_cpa_within_range(cpa, ccw_head, chain->ch_len)) {
/*
* (cpa - ccw_head) is the offset value of the host
* physical ccw to its chain head.

19
drivers/s390/crypto/ap_bus.c
View File

@ -1335,6 +1335,16 @@ static int __match_queue_device_with_qid(struct device *dev, void *data)
return is_queue_dev(dev) && to_ap_queue(dev)->qid == (int)(long) data;
}
/*
* Helper function to be used with bus_find_dev
* matches any queue device with given queue id
*/
static int __match_queue_device_with_queue_id(struct device *dev, void *data)
{
return is_queue_dev(dev)
&& AP_QID_QUEUE(to_ap_queue(dev)->qid) == (int)(long) data;
}
/*
* Helper function for ap_scan_bus().
* Does the scan bus job for the given adapter id.
@ -1435,8 +1445,13 @@ static void _ap_scan_bus_adapter(int id)
borked = aq->state == AP_STATE_BORKED;
spin_unlock_bh(&aq->lock);
}
if (borked) /* Remove broken device */
if (borked) {
/* Remove broken device */
AP_DBF(DBF_DEBUG,
"removing broken queue=%02x.%04x\n",
id, dom);
device_unregister(dev);
}
put_device(dev);
continue;
}
@ -1506,7 +1521,7 @@ static void ap_scan_bus(struct work_struct *unused)
struct device *dev =
bus_find_device(&ap_bus_type, NULL,
(void *)(long) ap_domain_index,
__match_queue_device_with_qid);
__match_queue_device_with_queue_id);
if (dev)
put_device(dev);
else

3
drivers/s390/crypto/ap_bus.h
View File

@ -91,7 +91,8 @@ enum ap_state {
AP_STATE_WORKING,
AP_STATE_QUEUE_FULL,
AP_STATE_SUSPEND_WAIT,
AP_STATE_BORKED,
AP_STATE_UNBOUND, /* momentary not bound to a driver */
AP_STATE_BORKED, /* broken */
NR_AP_STATES
};

7
drivers/s390/crypto/ap_queue.c
View File

@ -420,6 +420,10 @@ static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = {
[AP_EVENT_POLL] = ap_sm_suspend_read,
[AP_EVENT_TIMEOUT] = ap_sm_nop,
},
[AP_STATE_UNBOUND] = {
[AP_EVENT_POLL] = ap_sm_nop,
[AP_EVENT_TIMEOUT] = ap_sm_nop,
},
[AP_STATE_BORKED] = {
[AP_EVENT_POLL] = ap_sm_nop,
[AP_EVENT_TIMEOUT] = ap_sm_nop,
@ -725,6 +729,7 @@ static void __ap_flush_queue(struct ap_queue *aq)
ap_msg->rc = -EAGAIN;
ap_msg->receive(aq, ap_msg, NULL);
}
aq->queue_count = 0;
}
void ap_flush_queue(struct ap_queue *aq)
@ -743,7 +748,7 @@ void ap_queue_remove(struct ap_queue *aq)
/* reset with zero, also clears irq registration */
spin_lock_bh(&aq->lock);
ap_zapq(aq->qid);
aq->state = AP_STATE_BORKED;
aq->state = AP_STATE_UNBOUND;
spin_unlock_bh(&aq->lock);
}
EXPORT_SYMBOL(ap_queue_remove);

2
drivers/s390/crypto/pkey_api.c
View File

@ -1079,7 +1079,7 @@ int pkey_verifykey(const struct pkey_seckey *seckey,
rc = mkvp_cache_fetch(cardnr, domain, mkvp);
if (rc)
goto out;
if (t->mkvp == mkvp[1]) {
if (t->mkvp == mkvp[1] && t->mkvp != mkvp[0]) {
DEBUG_DBG("%s secure key has old mkvp\n", __func__);
if (pattributes)
*pattributes |= PKEY_VERIFY_ATTR_OLD_MKVP;

44
drivers/s390/crypto/vfio_ap_drv.c
View File

@ -15,7 +15,6 @@
#include "vfio_ap_private.h"
#define VFIO_AP_ROOT_NAME "vfio_ap"
#define VFIO_AP_DEV_TYPE_NAME "ap_matrix"
#define VFIO_AP_DEV_NAME "matrix"
MODULE_AUTHOR("IBM Corporation");
@ -24,10 +23,6 @@ MODULE_LICENSE("GPL v2");
static struct ap_driver vfio_ap_drv;
static struct device_type vfio_ap_dev_type = {
.name = VFIO_AP_DEV_TYPE_NAME,
};
struct ap_matrix_dev *matrix_dev;
/* Only type 10 adapters (CEX4 and later) are supported
@ -62,6 +57,22 @@ static void vfio_ap_matrix_dev_release(struct device *dev)
kfree(matrix_dev);
}
static int matrix_bus_match(struct device *dev, struct device_driver *drv)
{
return 1;
}
static struct bus_type matrix_bus = {
.name = "matrix",
.match = &matrix_bus_match,
};
static struct device_driver matrix_driver = {
.name = "vfio_ap",
.bus = &matrix_bus,
.suppress_bind_attrs = true,
};
static int vfio_ap_matrix_dev_create(void)
{
int ret;
@ -71,6 +82,10 @@ static int vfio_ap_matrix_dev_create(void)
if (IS_ERR(root_device))
return PTR_ERR(root_device);
ret = bus_register(&matrix_bus);
if (ret)
goto bus_register_err;
matrix_dev = kzalloc(sizeof(*matrix_dev), GFP_KERNEL);
if (!matrix_dev) {
ret = -ENOMEM;
@ -87,30 +102,41 @@ static int vfio_ap_matrix_dev_create(void)
mutex_init(&matrix_dev->lock);
INIT_LIST_HEAD(&matrix_dev->mdev_list);
matrix_dev->device.type = &vfio_ap_dev_type;
dev_set_name(&matrix_dev->device, "%s", VFIO_AP_DEV_NAME);
matrix_dev->device.parent = root_device;
matrix_dev->device.bus = &matrix_bus;
matrix_dev->device.release = vfio_ap_matrix_dev_release;
matrix_dev->device.driver = &vfio_ap_drv.driver;
matrix_dev->vfio_ap_drv = &vfio_ap_drv;
ret = device_register(&matrix_dev->device);
if (ret)
goto matrix_reg_err;
ret = driver_register(&matrix_driver);
if (ret)
goto matrix_drv_err;
return 0;
matrix_drv_err:
device_unregister(&matrix_dev->device);
matrix_reg_err:
put_device(&matrix_dev->device);
matrix_alloc_err:
bus_unregister(&matrix_bus);
bus_register_err:
root_device_unregister(root_device);
return ret;
}
static void vfio_ap_matrix_dev_destroy(void)
{
struct device *root_device = matrix_dev->device.parent;
driver_unregister(&matrix_driver);
device_unregister(&matrix_dev->device);
root_device_unregister(matrix_dev->device.parent);
bus_unregister(&matrix_bus);
root_device_unregister(root_device);
}
static int __init vfio_ap_init(void)

4
drivers/s390/crypto/vfio_ap_ops.c
View File

@ -198,8 +198,8 @@ static int vfio_ap_verify_queue_reserved(unsigned long *apid,
qres.apqi = apqi;
qres.reserved = false;
ret = driver_for_each_device(matrix_dev->device.driver, NULL, &qres,
vfio_ap_has_queue);
ret = driver_for_each_device(&matrix_dev->vfio_ap_drv->driver, NULL,
&qres, vfio_ap_has_queue);
if (ret)
return ret;

1
drivers/s390/crypto/vfio_ap_private.h
View File

@ -40,6 +40,7 @@ struct ap_matrix_dev {
struct ap_config_info info;
struct list_head mdev_list;
struct mutex lock;
struct ap_driver *vfio_ap_drv;
};
extern struct ap_matrix_dev *matrix_dev;

12
drivers/s390/net/ism_drv.c
View File

@ -141,10 +141,13 @@ static int register_ieq(struct ism_dev *ism)
static int unregister_sba(struct ism_dev *ism)
{
int ret;
if (!ism->sba)
return 0;
if (ism_cmd_simple(ism, ISM_UNREG_SBA))
ret = ism_cmd_simple(ism, ISM_UNREG_SBA);
if (ret && ret != ISM_ERROR)
return -EIO;
dma_free_coherent(&ism->pdev->dev, PAGE_SIZE,
@ -158,10 +161,13 @@ static int unregister_sba(struct ism_dev *ism)
static int unregister_ieq(struct ism_dev *ism)
{
int ret;
if (!ism->ieq)
return 0;
if (ism_cmd_simple(ism, ISM_UNREG_IEQ))
ret = ism_cmd_simple(ism, ISM_UNREG_IEQ);
if (ret && ret != ISM_ERROR)
return -EIO;
dma_free_coherent(&ism->pdev->dev, PAGE_SIZE,
@ -287,7 +293,7 @@ static int ism_unregister_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb)
cmd.request.dmb_tok = dmb->dmb_tok;
ret = ism_cmd(ism, &cmd);
if (ret)
if (ret && ret != ISM_ERROR)
goto out;
ism_free_dmb(ism, dmb);

4
drivers/s390/net/qeth_core_main.c
View File

@ -4884,8 +4884,8 @@ static int qeth_qdio_establish(struct qeth_card *card)
init_data.output_handler = qeth_qdio_output_handler;
init_data.queue_start_poll_array = queue_start_poll;
init_data.int_parm = (unsigned long) card;
init_data.input_sbal_addr_array = (void **) in_sbal_ptrs;
init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
init_data.input_sbal_addr_array = in_sbal_ptrs;
init_data.output_sbal_addr_array = out_sbal_ptrs;
init_data.output_sbal_state_array = card->qdio.out_bufstates;
init_data.scan_threshold =
(card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;

4
drivers/s390/scsi/zfcp_qdio.c
View File

@ -294,8 +294,8 @@ static void zfcp_qdio_setup_init_data(struct qdio_initialize *id,
id->input_handler = zfcp_qdio_int_resp;
id->output_handler = zfcp_qdio_int_req;
id->int_parm = (unsigned long) qdio;
id->input_sbal_addr_array = (void **) (qdio->res_q);
id->output_sbal_addr_array = (void **) (qdio->req_q);
id->input_sbal_addr_array = qdio->res_q;
id->output_sbal_addr_array = qdio->req_q;
id->scan_threshold =
QDIO_MAX_BUFFERS_PER_Q - ZFCP_QDIO_MAX_SBALS_PER_REQ * 2;
}

4
include/linux/syscalls.h
View File

@ -1185,6 +1185,10 @@ unsigned long ksys_mmap_pgoff(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff);
ssize_t ksys_readahead(int fd, loff_t offset, size_t count);
int ksys_ipc(unsigned int call, int first, unsigned long second,
unsigned long third, void __user * ptr, long fifth);
int compat_ksys_ipc(u32 call, int first, int second,
u32 third, u32 ptr, u32 fifth);
/*
* The following kernel syscall equivalents are just wrappers to fs-internal

20
ipc/syscall.c
View File

@ -17,8 +17,8 @@
#include <linux/shm.h>
#include <linux/uaccess.h>
SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
unsigned long, third, void __user *, ptr, long, fifth)
int ksys_ipc(unsigned int call, int first, unsigned long second,
unsigned long third, void __user * ptr, long fifth)
{
int version, ret;
@ -106,6 +106,12 @@ SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
return -ENOSYS;
}
}
SYSCALL_DEFINE6(ipc, unsigned int, call, int, first, unsigned long, second,
unsigned long, third, void __user *, ptr, long, fifth)
{
return ksys_ipc(call, first, second, third, ptr, fifth);
}
#endif
#ifdef CONFIG_COMPAT
@ -121,8 +127,8 @@ struct compat_ipc_kludge {
};
#ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
u32, third, compat_uptr_t, ptr, u32, fifth)
int compat_ksys_ipc(u32 call, int first, int second,
u32 third, compat_uptr_t ptr, u32 fifth)
{
int version;
u32 pad;
@ -195,5 +201,11 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
return -ENOSYS;
}
COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
u32, third, compat_uptr_t, ptr, u32, fifth)
{
return compat_ksys_ipc(call, first, second, third, ptr, fifth);
}
#endif
#endif

1
kernel/sys_ni.c
View File

@ -366,6 +366,7 @@ COND_SYSCALL(kexec_file_load);
/* s390 */
COND_SYSCALL(s390_pci_mmio_read);
COND_SYSCALL(s390_pci_mmio_write);
COND_SYSCALL(s390_ipc);
COND_SYSCALL_COMPAT(s390_ipc);
/* powerpc */