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| author | D Scott Phillips <scott@os.amperecomputing.com> | 2024-08-27 14:17:01 -0700 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-08-30 14:22:12 +0100 |
| commit | db0d8a84348b876df7c4276f0cbce5df3b769f5f (patch) | |
| tree | 4cc658c538ca74f6d125c4f0b35b8012814b3f9b /arch/arm64/Kconfig | |
| parent | 7c626ce4bae1ac14f60076d00eafe71af30450ba (diff) | |
| download | lwn-db0d8a84348b876df7c4276f0cbce5df3b769f5f.tar.gz lwn-db0d8a84348b876df7c4276f0cbce5df3b769f5f.zip | |
arm64: errata: Enable the AC03_CPU_38 workaround for ampere1a
The ampere1a cpu is affected by erratum AC04_CPU_10 which is the same
bug as AC03_CPU_38. Add ampere1a to the AC03_CPU_38 workaround midr list.
Cc: <stable@vger.kernel.org>
Signed-off-by: D Scott Phillips <scott@os.amperecomputing.com>
Acked-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20240827211701.2216719-1-scott@os.amperecomputing.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index a2f8ff354ca6..c8cba20a4d11 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -423,7 +423,7 @@ config AMPERE_ERRATUM_AC03_CPU_38 default y help This option adds an alternative code sequence to work around Ampere - erratum AC03_CPU_38 on AmpereOne. + errata AC03_CPU_38 and AC04_CPU_10 on AmpereOne. The affected design reports FEAT_HAFDBS as not implemented in ID_AA64MMFR1_EL1.HAFDBS, but (V)TCR_ELx.{HA,HD} are not RES0 |