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LoongArch fixes for v6.5-final

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Merge tag 'loongarch-fixes-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch fixes from Huacai Chen:
 "Fix a ptrace bug, a hw_breakpoint bug, some build errors/warnings and
  some trivial cleanups"

* tag 'loongarch-fixes-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
  LoongArch: Fix hw_breakpoint_control() for watchpoints
  LoongArch: Ensure FP/SIMD registers in the core dump file is up to date
  LoongArch: Put the body of play_dead() into arch_cpu_idle_dead()
  LoongArch: Add identifier names to arguments of die() declaration
  LoongArch: Return earlier in die() if notify_die() returns NOTIFY_STOP
  LoongArch: Do not kill the task in die() if notify_die() returns NOTIFY_STOP
  LoongArch: Remove <asm/export.h>
  LoongArch: Replace #include <asm/export.h> with #include <linux/export.h>
  LoongArch: Remove unneeded #include <asm/export.h>
  LoongArch: Replace -ffreestanding with finer-grained -fno-builtin's
  LoongArch: Remove redundant "source drivers/firmware/Kconfig"
This commit is contained in:
Linus Torvalds 2023-08-26 10:28:52 -07:00
commit c313761337
22 changed files with 42 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/loongarch/Kconfig
View File

@ -662,5 +662,3 @@ source "kernel/power/Kconfig"
source "drivers/acpi/Kconfig"
endmenu
source "drivers/firmware/Kconfig"

2
arch/loongarch/Makefile
View File

@ -83,8 +83,8 @@ KBUILD_CFLAGS_KERNEL += -fPIE
LDFLAGS_vmlinux += -static -pie --no-dynamic-linker -z notext
endif
cflags-y += -ffreestanding
cflags-y += $(call cc-option, -mno-check-zero-division)
cflags-y += -fno-builtin-memcpy -fno-builtin-memmove -fno-builtin-memset
load-y = 0x9000000000200000
bootvars-y = VMLINUX_LOAD_ADDRESS=$(load-y)

1
arch/loongarch/include/asm/Kbuild
View File

@ -1,6 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
generic-y += dma-contiguous.h
generic-y += export.h
generic-y += mcs_spinlock.h
generic-y += parport.h
generic-y += early_ioremap.h

22
arch/loongarch/include/asm/fpu.h
View File

@ -173,16 +173,30 @@ static inline void restore_fp(struct task_struct *tsk)
_restore_fp(&tsk->thread.fpu);
}
static inline union fpureg *get_fpu_regs(struct task_struct *tsk)
static inline void save_fpu_regs(struct task_struct *tsk)
{
unsigned int euen;
if (tsk == current) {
preempt_disable();
if (is_fpu_owner())
euen = csr_read32(LOONGARCH_CSR_EUEN);
#ifdef CONFIG_CPU_HAS_LASX
if (euen & CSR_EUEN_LASXEN)
_save_lasx(&current->thread.fpu);
else
#endif
#ifdef CONFIG_CPU_HAS_LSX
if (euen & CSR_EUEN_LSXEN)
_save_lsx(&current->thread.fpu);
else
#endif
if (euen & CSR_EUEN_FPEN)
_save_fp(&current->thread.fpu);
preempt_enable();
}
return tsk->thread.fpu.fpr;
}
static inline int is_simd_owner(void)

2
arch/loongarch/include/asm/ptrace.h
View File

@ -162,7 +162,7 @@ static inline void regs_set_return_value(struct pt_regs *regs, unsigned long val
#define instruction_pointer(regs) ((regs)->csr_era)
#define profile_pc(regs) instruction_pointer(regs)
extern void die(const char *, struct pt_regs *) __noreturn;
extern void die(const char *str, struct pt_regs *regs);
static inline void die_if_kernel(const char *str, struct pt_regs *regs)
{

2
arch/loongarch/include/asm/smp.h
View File

@ -98,8 +98,6 @@ static inline void __cpu_die(unsigned int cpu)
{
loongson_cpu_die(cpu);
}
extern void __noreturn play_dead(void);
#endif
#endif /* __ASM_SMP_H */

2
arch/loongarch/kernel/fpu.S
View File

@ -6,12 +6,12 @@
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/asm-extable.h>
#include <asm/asm-offsets.h>
#include <asm/errno.h>
#include <asm/export.h>
#include <asm/fpregdef.h>
#include <asm/loongarch.h>
#include <asm/regdef.h>

3
arch/loongarch/kernel/hw_breakpoint.c
View File

@ -207,8 +207,7 @@ static int hw_breakpoint_control(struct perf_event *bp,
write_wb_reg(CSR_CFG_CTRL, i, 0, CTRL_PLV_ENABLE);
} else {
ctrl = encode_ctrl_reg(info->ctrl);
write_wb_reg(CSR_CFG_CTRL, i, 1, ctrl | CTRL_PLV_ENABLE |
1 << MWPnCFG3_LoadEn | 1 << MWPnCFG3_StoreEn);
write_wb_reg(CSR_CFG_CTRL, i, 1, ctrl | CTRL_PLV_ENABLE);
}
enable = csr_read64(LOONGARCH_CSR_CRMD);
csr_write64(CSR_CRMD_WE | enable, LOONGARCH_CSR_CRMD);

2
arch/loongarch/kernel/mcount.S
View File

@ -5,7 +5,7 @@
* Copyright (C) 2022 Loongson Technology Corporation Limited
*/
#include <asm/export.h>
#include <linux/export.h>
#include <asm/ftrace.h>
#include <asm/regdef.h>
#include <asm/stackframe.h>

1
arch/loongarch/kernel/mcount_dyn.S
View File

@ -3,7 +3,6 @@
* Copyright (C) 2022 Loongson Technology Corporation Limited
*/
#include <asm/export.h>
#include <asm/ftrace.h>
#include <asm/regdef.h>
#include <asm/stackframe.h>

7
arch/loongarch/kernel/process.c
View File

@ -61,13 +61,6 @@ EXPORT_SYMBOL(__stack_chk_guard);
unsigned long boot_option_idle_override = IDLE_NO_OVERRIDE;
EXPORT_SYMBOL(boot_option_idle_override);
#ifdef CONFIG_HOTPLUG_CPU
void __noreturn arch_cpu_idle_dead(void)
{
play_dead();
}
#endif
asmlinkage void ret_from_fork(void);
asmlinkage void ret_from_kernel_thread(void);

4
arch/loongarch/kernel/ptrace.c
View File

@ -147,6 +147,8 @@ static int fpr_get(struct task_struct *target,
{
int r;
save_fpu_regs(target);
if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t))
r = gfpr_get(target, &to);
else
@ -278,6 +280,8 @@ static int simd_get(struct task_struct *target,
{
const unsigned int wr_size = NUM_FPU_REGS * regset->size;
save_fpu_regs(target);
if (!tsk_used_math(target)) {
/* The task hasn't used FP or LSX, fill with 0xff */
copy_pad_fprs(target, regset, &to, 0);

2
arch/loongarch/kernel/smp.c
View File

@ -317,7 +317,7 @@ void loongson_cpu_die(unsigned int cpu)
mb();
}
void play_dead(void)
void __noreturn arch_cpu_idle_dead(void)
{
register uint64_t addr;
register void (*init_fn)(void);

14
arch/loongarch/kernel/traps.c
View File

@ -383,16 +383,15 @@ void show_registers(struct pt_regs *regs)
static DEFINE_RAW_SPINLOCK(die_lock);
void __noreturn die(const char *str, struct pt_regs *regs)
void die(const char *str, struct pt_regs *regs)
{
int ret;
static int die_counter;
int sig = SIGSEGV;
oops_enter();
if (notify_die(DIE_OOPS, str, regs, 0, current->thread.trap_nr,
SIGSEGV) == NOTIFY_STOP)
sig = 0;
ret = notify_die(DIE_OOPS, str, regs, 0,
current->thread.trap_nr, SIGSEGV);
console_verbose();
raw_spin_lock_irq(&die_lock);
@ -405,6 +404,9 @@ void __noreturn die(const char *str, struct pt_regs *regs)
oops_exit();
if (ret == NOTIFY_STOP)
return;
if (regs && kexec_should_crash(current))
crash_kexec(regs);
@ -414,7 +416,7 @@ void __noreturn die(const char *str, struct pt_regs *regs)
if (panic_on_oops)
panic("Fatal exception");
make_task_dead(sig);
make_task_dead(SIGSEGV);
}
static inline void setup_vint_size(unsigned int size)

2
arch/loongarch/lib/clear_user.S
View File

@ -3,12 +3,12 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <asm/alternative-asm.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/asm-extable.h>
#include <asm/cpu.h>
#include <asm/export.h>
#include <asm/regdef.h>
.irp to, 0, 1, 2, 3, 4, 5, 6, 7

2
arch/loongarch/lib/copy_user.S
View File

@ -3,12 +3,12 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <asm/alternative-asm.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/asm-extable.h>
#include <asm/cpu.h>
#include <asm/export.h>
#include <asm/regdef.h>
.irp to, 0, 1, 2, 3, 4, 5, 6, 7

2
arch/loongarch/lib/memcpy.S
View File

@ -3,11 +3,11 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <asm/alternative-asm.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/cpu.h>
#include <asm/export.h>
#include <asm/regdef.h>
SYM_FUNC_START(memcpy)

2
arch/loongarch/lib/memmove.S
View File

@ -3,11 +3,11 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <asm/alternative-asm.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/cpu.h>
#include <asm/export.h>
#include <asm/regdef.h>
SYM_FUNC_START(memmove)

2
arch/loongarch/lib/memset.S
View File

@ -3,11 +3,11 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <asm/alternative-asm.h>
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/cpu.h>
#include <asm/export.h>
#include <asm/regdef.h>
.macro fill_to_64 r0

1
arch/loongarch/lib/unaligned.S
View File

@ -9,7 +9,6 @@
#include <asm/asmmacro.h>
#include <asm/asm-extable.h>
#include <asm/errno.h>
#include <asm/export.h>
#include <asm/regdef.h>
.L_fixup_handle_unaligned:

2
arch/loongarch/mm/page.S
View File

@ -2,9 +2,9 @@
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <linux/export.h>
#include <linux/linkage.h>
#include <asm/asm.h>
#include <asm/export.h>
#include <asm/page.h>
#include <asm/regdef.h>

1
arch/loongarch/mm/tlbex.S
View File

@ -3,7 +3,6 @@
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <asm/asm.h>
#include <asm/export.h>
#include <asm/loongarch.h>
#include <asm/page.h>
#include <asm/pgtable.h>