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| author | Joey Gouly <joey.gouly@arm.com> | 2022-07-08 15:00:56 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-07-19 19:29:04 +0100 |
| commit | 19198abf3d81b66aaee453c063e66b8df9d69251 (patch) | |
| tree | a2b085cf3761e44f5946fbae853e13ffdd8f53ae | |
| parent | 9e26cac5f82b2cce43d98ffd8382ebd858fae7e8 (diff) | |
| download | linux-19198abf3d81b66aaee453c063e66b8df9d69251.tar.bz2 | |
arm64/mm: use GENMASK_ULL for TTBR_BADDR_MASK_52
The comment says this should be GENMASK_ULL(47, 12), so do that!
GENMASK_ULL() is available in assembly since:
95b980d62d52 ("linux/bits.h: make BIT(), GENMASK(), and friends available in assembly")
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Link: https://lore.kernel.org/all/20171221164851.edxq536yobjuagwe@armageddon.cambridge.arm.com/
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Kristina Martsenko <kristina.martsenko@arm.com>
Reviewed-by: Kristina Martsenko <kristina.martsenko@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20220708140056.10123-1-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | arch/arm64/include/asm/pgtable-hwdef.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index dd3d12bce07b..5ab8d163198f 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -281,10 +281,9 @@ */ #ifdef CONFIG_ARM64_PA_BITS_52 /* - * This should be GENMASK_ULL(47, 2). * TTBR_ELx[1] is RES0 in this configuration. */ -#define TTBR_BADDR_MASK_52 (((UL(1) << 46) - 1) << 2) +#define TTBR_BADDR_MASK_52 GENMASK_ULL(47, 2) #endif #ifdef CONFIG_ARM64_VA_BITS_52 |