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arm64/mm: Replace an open coding with ID_AA64MMFR1_EL1_HAFDBS_MASK

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Replace '0xf' with ID_AA64MMFR1_EL1_HAFDBS_MASK while evaluating if the cpu
supports implicit page table entry access flag update in HW.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20230711090458.238346-1-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Anshuman Khandual 2023-07-11 14:34:58 +05:30 committed by Will Deacon
parent 6eaae19807
commit d0999555e3
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/mm/proc.S
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@ -447,7 +447,7 @@ SYM_FUNC_START(__cpu_setup)
* via capabilities.
*/
mrs x9, ID_AA64MMFR1_EL1
and x9, x9, #0xf
and x9, x9, ID_AA64MMFR1_EL1_HAFDBS_MASK
cbz x9, 1f
orr tcr, tcr, #TCR_HA // hardware Access flag update
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