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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:
    95b980d62d ("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>
This commit is contained in:
Joey Gouly 2022-07-08 15:00:56 +01:00 committed by Will Deacon
parent 9e26cac5f8
commit 19198abf3d
1 changed files with 1 additions and 2 deletions
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3
arch/arm64/include/asm/pgtable-hwdef.h
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@ -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