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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Browse Source 
Pull powerpc updates from Michael Ellerman:
 "There's some bug fixes or cleanups to facilitate fixes, a MAINTAINERS
  update, and a new syscall (bpf)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  powerpc/numa: ensure per-cpu NUMA mappings are correct on topology update
  powerpc/numa: use cached value of update->cpu in update_cpu_topology
  cxl: Fix PSL error due to duplicate segment table entries
  powerpc/mm: Use appropriate ESID mask in copro_calculate_slb()
  cxl: Refactor cxl_load_segment() and find_free_sste()
  cxl: Disable secondary hash in segment table
  Revert "powerpc/powernv: Fix endian bug in LPC bus debugfs accessors"
  powernv: Use _GLOBAL_TOC for opal wrappers
  powerpc: Wire up sys_bpf() syscall
  MAINTAINERS: nx-842 driver maintainer change
  powerpc/mm: Remove redundant #if case
  powerpc/mm: Fix build error with hugetlfs disabled
This commit is contained in:
Linus Torvalds 2014-10-29 11:11:44 -07:00
commit 19be9e8aa7
12 changed files with 57 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
MAINTAINERS
View File

@ -4608,7 +4608,7 @@ S: Supported
F: drivers/crypto/nx/
IBM Power 842 compression accelerator
M: Nathan Fontenot <nfont@linux.vnet.ibm.com>
M: Dan Streetman <ddstreet@us.ibm.com>
S: Supported
F: drivers/crypto/nx/nx-842.c
F: include/linux/nx842.h

2
arch/powerpc/include/asm/hugetlb.h
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@ -71,7 +71,7 @@ pte_t *huge_pte_offset_and_shift(struct mm_struct *mm,
void flush_dcache_icache_hugepage(struct page *page);
#if defined(CONFIG_PPC_MM_SLICES) || defined(CONFIG_PPC_SUBPAGE_PROT)
#if defined(CONFIG_PPC_MM_SLICES)
int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
unsigned long len);
#else

1
arch/powerpc/include/asm/systbl.h
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@ -365,3 +365,4 @@ SYSCALL_SPU(renameat2)
SYSCALL_SPU(seccomp)
SYSCALL_SPU(getrandom)
SYSCALL_SPU(memfd_create)
SYSCALL_SPU(bpf)

2
arch/powerpc/include/asm/unistd.h
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@ -12,7 +12,7 @@
#include <uapi/asm/unistd.h>
#define __NR_syscalls 361
#define __NR_syscalls 362
#define __NR__exit __NR_exit
#define NR_syscalls __NR_syscalls

1
arch/powerpc/include/uapi/asm/unistd.h
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@ -383,5 +383,6 @@
#define __NR_seccomp 358
#define __NR_getrandom 359
#define __NR_memfd_create 360
#define __NR_bpf 361
#endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */

3
arch/powerpc/mm/copro_fault.c
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@ -99,8 +99,6 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb)
u64 vsid;
int psize, ssize;
slb->esid = (ea & ESID_MASK) | SLB_ESID_V;
switch (REGION_ID(ea)) {
case USER_REGION_ID:
pr_devel("%s: 0x%llx -- USER_REGION_ID\n", __func__, ea);
@ -133,6 +131,7 @@ int copro_calculate_slb(struct mm_struct *mm, u64 ea, struct copro_slb *slb)
vsid |= mmu_psize_defs[psize].sllp |
((ssize == MMU_SEGSIZE_1T) ? SLB_VSID_B_1T : 0);
slb->esid = (ea & (ssize == MMU_SEGSIZE_1T ? ESID_MASK_1T : ESID_MASK)) | SLB_ESID_V;
slb->vsid = vsid;
return 0;

7
arch/powerpc/mm/numa.c
View File

@ -1509,11 +1509,14 @@ static int update_cpu_topology(void *data)
cpu = smp_processor_id();
for (update = data; update; update = update->next) {
int new_nid = update->new_nid;
if (cpu != update->cpu)
continue;
unmap_cpu_from_node(update->cpu);
map_cpu_to_node(update->cpu, update->new_nid);
unmap_cpu_from_node(cpu);
map_cpu_to_node(cpu, new_nid);
set_cpu_numa_node(cpu, new_nid);
set_cpu_numa_mem(cpu, local_memory_node(new_nid));
vdso_getcpu_init();
}

3
arch/powerpc/mm/slice.c
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@ -682,6 +682,7 @@ void slice_set_range_psize(struct mm_struct *mm, unsigned long start,
slice_convert(mm, mask, psize);
}
#ifdef CONFIG_HUGETLB_PAGE
/*
* is_hugepage_only_range() is used by generic code to verify whether
* a normal mmap mapping (non hugetlbfs) is valid on a given area.
@ -726,4 +727,4 @@ int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr,
#endif
return !slice_check_fit(mask, available);
}
#endif

4
arch/powerpc/platforms/powernv/opal-lpc.c
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@ -191,7 +191,6 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
{
struct lpc_debugfs_entry *lpc = filp->private_data;
u32 data, pos, len, todo;
__be32 bedata;
int rc;
if (!access_ok(VERIFY_WRITE, ubuf, count))
@ -214,10 +213,9 @@ static ssize_t lpc_debug_read(struct file *filp, char __user *ubuf,
len = 2;
}
rc = opal_lpc_read(opal_lpc_chip_id, lpc->lpc_type, pos,
&bedata, len);
&data, len);
if (rc)
return -ENXIO;
data = be32_to_cpu(bedata);
switch(len) {
case 4:
rc = __put_user((u32)data, (u32 __user *)ubuf);

2
arch/powerpc/platforms/powernv/opal-wrappers.S
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@ -58,7 +58,7 @@ END_FTR_SECTION(0, 1); \
*/
#define OPAL_CALL(name, token) \
_GLOBAL(name); \
_GLOBAL_TOC(name); \
mflr r0; \
std r0,16(r1); \
li r0,token; \

76
drivers/misc/cxl/fault.c
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@ -21,60 +21,64 @@
#include "cxl.h"
static struct cxl_sste* find_free_sste(struct cxl_sste *primary_group,
bool sec_hash,
struct cxl_sste *secondary_group,
unsigned int *lru)
static bool sste_matches(struct cxl_sste *sste, struct copro_slb *slb)
{
unsigned int i, entry;
struct cxl_sste *sste, *group = primary_group;
for (i = 0; i < 2; i++) {
for (entry = 0; entry < 8; entry++) {
sste = group + entry;
if (!(be64_to_cpu(sste->esid_data) & SLB_ESID_V))
return sste;
}
if (!sec_hash)
break;
group = secondary_group;
}
/* Nothing free, select an entry to cast out */
if (sec_hash && (*lru & 0x8))
sste = secondary_group + (*lru & 0x7);
else
sste = primary_group + (*lru & 0x7);
*lru = (*lru + 1) & 0xf;
return sste;
return ((sste->vsid_data == cpu_to_be64(slb->vsid)) &&
(sste->esid_data == cpu_to_be64(slb->esid)));
}
static void cxl_load_segment(struct cxl_context *ctx, struct copro_slb *slb)
/*
* This finds a free SSTE for the given SLB, or returns NULL if it's already in
* the segment table.
*/
static struct cxl_sste* find_free_sste(struct cxl_context *ctx,
struct copro_slb *slb)
{
/* mask is the group index, we search primary and secondary here. */
unsigned int mask = (ctx->sst_size >> 7)-1; /* SSTP0[SegTableSize] */
bool sec_hash = 1;
struct cxl_sste *sste;
struct cxl_sste *primary, *sste, *ret = NULL;
unsigned int mask = (ctx->sst_size >> 7) - 1; /* SSTP0[SegTableSize] */
unsigned int entry;
unsigned int hash;
unsigned long flags;
sec_hash = !!(cxl_p1n_read(ctx->afu, CXL_PSL_SR_An) & CXL_PSL_SR_An_SC);
if (slb->vsid & SLB_VSID_B_1T)
hash = (slb->esid >> SID_SHIFT_1T) & mask;
else /* 256M */
hash = (slb->esid >> SID_SHIFT) & mask;
primary = ctx->sstp + (hash << 3);
for (entry = 0, sste = primary; entry < 8; entry++, sste++) {
if (!ret && !(be64_to_cpu(sste->esid_data) & SLB_ESID_V))
ret = sste;
if (sste_matches(sste, slb))
return NULL;
}
if (ret)
return ret;
/* Nothing free, select an entry to cast out */
ret = primary + ctx->sst_lru;
ctx->sst_lru = (ctx->sst_lru + 1) & 0x7;
return ret;
}
static void cxl_load_segment(struct cxl_context *ctx, struct copro_slb *slb)
{
/* mask is the group index, we search primary and secondary here. */
struct cxl_sste *sste;
unsigned long flags;
spin_lock_irqsave(&ctx->sste_lock, flags);
sste = find_free_sste(ctx->sstp + (hash << 3), sec_hash,
ctx->sstp + ((~hash & mask) << 3), &ctx->sst_lru);
sste = find_free_sste(ctx, slb);
if (!sste)
goto out_unlock;
pr_devel("CXL Populating SST[%li]: %#llx %#llx\n",
sste - ctx->sstp, slb->vsid, slb->esid);
sste->vsid_data = cpu_to_be64(slb->vsid);
sste->esid_data = cpu_to_be64(slb->esid);
out_unlock:
spin_unlock_irqrestore(&ctx->sste_lock, flags);
}

4
drivers/misc/cxl/native.c
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@ -417,7 +417,7 @@ static int attach_afu_directed(struct cxl_context *ctx, u64 wed, u64 amr)
ctx->elem->haurp = 0; /* disable */
ctx->elem->sdr = cpu_to_be64(mfspr(SPRN_SDR1));
sr = CXL_PSL_SR_An_SC;
sr = 0;
if (ctx->master)
sr |= CXL_PSL_SR_An_MP;
if (mfspr(SPRN_LPCR) & LPCR_TC)
@ -508,7 +508,7 @@ static int attach_dedicated(struct cxl_context *ctx, u64 wed, u64 amr)
u64 sr;
int rc;
sr = CXL_PSL_SR_An_SC;
sr = 0;
set_endian(sr);
if (ctx->master)
sr |= CXL_PSL_SR_An_MP;