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arm64: Add KRYO{3,4}XX CPU cores to spectre-v2 safe list

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The "silver" KRYO3XX and KRYO4XX CPU cores are not affected by Spectre
variant 2. Add them to spectre_v2 safe list to correct the spurious
ARM_SMCCC_ARCH_WORKAROUND_1 warning and vulnerability status reported
under sysfs.

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
[will: tweaked commit message to remove stale mention of "gold" cores]
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Sai Prakash Ranjan
2020-01-17 01:33:53 +05:30
committed by Will Deacon
parent f88f42f853
commit 83b0c36b8a
2 changed files with 6 additions and 0 deletions
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2
arch/arm64/kernel/cpu_errata.c
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@@ -548,6 +548,8 @@ static const struct midr_range spectre_v2_safe_list[] = {
MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
MIDR_ALL_VERSIONS(MIDR_BRAHMA_B53),
MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_3XX_SILVER),
MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_SILVER),
{ /* sentinel */ }
};