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arm64: kpti: Add KRYO2XX gold/silver CPU cores to kpti safelist
author
Konrad Dybcio
<konrad.dybcio@somainline.org>
Wed, 4 Nov 2020 23:22:11 +0000
(
00:22
+0100)
committer
Will Deacon
<will@kernel.org>
Fri, 13 Nov 2020 09:47:08 +0000
(09:47 +0000)
QCOM KRYO2XX gold (big) silver (LITTLE) CPU cores are based on
Cortex-A73 and Cortex-A53 respectively and are meltdown safe,
hence add them to kpti_safe_list[].
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link:
https://lore.kernel.org/r/20201104232218.198800-3-konrad.dybcio@somainline.org
Signed-off-by: Will Deacon <will@kernel.org>
arch/arm64/kernel/cpufeature.c
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diff --git
a/arch/arm64/kernel/cpufeature.c
b/arch/arm64/kernel/cpufeature.c
index
dcc165b
..
6f36c4f
100644
(file)
--- a/
arch/arm64/kernel/cpufeature.c
+++ b/
arch/arm64/kernel/cpufeature.c
@@
-1337,6
+1337,8
@@
static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
MIDR_ALL_VERSIONS(MIDR_NVIDIA_CARMEL),
+ MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_2XX_GOLD),
+ MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_2XX_SILVER),
MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_3XX_SILVER),
MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_SILVER),
{ /* sentinel */ }