diff options
| author | Alex Shi <alex.shi@linaro.org> | 2017-07-11 14:21:20 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2017-07-11 16:22:22 +0800 |
| commit | 2120557722577d8cff75a33a799ad15582dbd8ef (patch) | |
| tree | 2518d0dd3038f52cc9d4a26200594132e115f829 /arch/powerpc/mm | |
| parent | afd012a6a05f426411186b5ed23c99bb0d83cbe7 (diff) | |
| parent | 03a929fbcbb1f7dca3cca19eefcbc15ecc191331 (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Conflicts:
arch/arm64/kernel/armv8_deprecated.c
arch/arm64/kernel/efi.c
arch/arm64/kernel/entry.S
arch/arm64/kernel/head.S
arch/arm64/kernel/hw_breakpoint.c
arch/arm64/mm/mmu.c
include/linux/memblock.h
mm/memblock.c
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/slb_low.S | 10 | ||||
| -rw-r--r-- | arch/powerpc/mm/slice.c | 2 |
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index 4c48b487698c..0b48ce40d351 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -179,6 +179,16 @@ END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT) b slb_finish_load 8: /* invalid EA */ + /* + * It's possible the bad EA is too large to fit in the SLB cache, which + * would mean we'd fail to invalidate it on context switch. So mark the + * SLB cache as full so we force a full flush. We also set cr7+eq to + * mark the address as a kernel address, so slb_finish_load() skips + * trying to insert it into the SLB cache. + */ + li r9,SLB_CACHE_ENTRIES + 1 + sth r9,PACASLBCACHEPTR(r13) + crset 4*cr7+eq li r10,0 /* BAD_VSID */ li r9,0 /* BAD_VSID */ li r11,SLB_VSID_USER /* flags don't much matter */ diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index 0f432a702870..6ad12b244770 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -105,7 +105,7 @@ static int slice_area_is_free(struct mm_struct *mm, unsigned long addr, if ((mm->task_size - len) < addr) return 0; vma = find_vma(mm, addr); - return (!vma || (addr + len) <= vma->vm_start); + return (!vma || (addr + len) <= vm_start_gap(vma)); } static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice) |