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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-05-05 12:47:08 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-05 21:20:13 +1000 |
| commit | fe4a6856cb4f4353a6cb8d3629bcfe9204e3d57d (patch) | |
| tree | 37caff45bf740f9658442199797cbb85f678111b /arch/powerpc/include/asm/mmu.h | |
| parent | 93a98695f2f9f9c48a29ab6249334fdc6e9722cb (diff) | |
| download | lwn-fe4a6856cb4f4353a6cb8d3629bcfe9204e3d57d.tar.gz lwn-fe4a6856cb4f4353a6cb8d3629bcfe9204e3d57d.zip | |
powerpc/pkeys: Avoid using lockless page table walk
Fetch pkey from vma instead of linux page table. Also document the fact that in
some cases the pkey returned in siginfo won't be the same as the one we took
keyfault on. Even with linux page table walk, we can end up in a similar scenario.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200505071729.54912-2-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/mmu.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 0699cfeeb8c9..cf2a08bfd5cd 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -291,15 +291,6 @@ static inline bool early_radix_enabled(void) } #endif -#ifdef CONFIG_PPC_MEM_KEYS -extern u16 get_mm_addr_key(struct mm_struct *mm, unsigned long address); -#else -static inline u16 get_mm_addr_key(struct mm_struct *mm, unsigned long address) -{ - return 0; -} -#endif /* CONFIG_PPC_MEM_KEYS */ - #ifdef CONFIG_STRICT_KERNEL_RWX static inline bool strict_kernel_rwx_enabled(void) { |