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| author | Will Deacon <will.deacon@arm.com> | 2017-12-01 17:33:48 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-12-11 13:41:17 +0000 |
| commit | b519538dfefc2f8478a1bcb458459c861d431784 (patch) | |
| tree | 67c2118ec03d3ba0464620ecc5f5f6117b87e6f8 /arch/arm64/include/asm/mmu.h | |
| parent | 7a4a0c1555b824e0d3dd72942481b1190abea604 (diff) | |
| download | linux-b519538dfefc2f8478a1bcb458459c861d431784.tar.bz2 | |
arm64: mm: Introduce TTBR_ASID_MASK for getting at the ASID in the TTBR
There are now a handful of open-coded masks to extract the ASID from a
TTBR value, so introduce a TTBR_ASID_MASK and use that instead.
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/mmu.h')
| -rw-r--r-- | arch/arm64/include/asm/mmu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/mmu.h b/arch/arm64/include/asm/mmu.h index da6f12e40714..6f7bdb89817f 100644 --- a/arch/arm64/include/asm/mmu.h +++ b/arch/arm64/include/asm/mmu.h @@ -18,6 +18,7 @@ #define MMCF_AARCH32 0x1 /* mm context flag for AArch32 executables */ #define USER_ASID_FLAG (UL(1) << 48) +#define TTBR_ASID_MASK (UL(0xffff) << 48) #ifndef __ASSEMBLY__ |