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arm64/cpufeature: Add missing id_aa64mmfr4 feature reg update

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Add missing id_aa64mmfr4 feature register check and update in
update_cpu_features(). Update the taint status as well.

Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20250329034409.21354-2-yangyicong@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Yicong Yang 2025-03-29 11:44:07 +08:00 • committed by Will Deacon
parent 0af2f6be1b
commit 35382a3646
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/kernel/cpufeature.c
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@ -1403,6 +1403,8 @@ void update_cpu_features(int cpu,
info->reg_id_aa64mmfr2, boot->reg_id_aa64mmfr2);
taint |= check_update_ftr_reg(SYS_ID_AA64MMFR3_EL1, cpu,
info->reg_id_aa64mmfr3, boot->reg_id_aa64mmfr3);
taint |= check_update_ftr_reg(SYS_ID_AA64MMFR4_EL1, cpu,
info->reg_id_aa64mmfr4, boot->reg_id_aa64mmfr4);
taint |= check_update_ftr_reg(SYS_ID_AA64PFR0_EL1, cpu,
info->reg_id_aa64pfr0, boot->reg_id_aa64pfr0);