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    Subject[PATCH AUTOSEL 5.9 20/21] arm64: kpti: Add KRYO2XX gold/silver CPU cores to kpti safelist
    Date
    From: Konrad Dybcio <konrad.dybcio@somainline.org>

    [ Upstream commit e3dd11a9f2521cecbcf30c2fd17ecc5a445dfb94 ]

    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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    arch/arm64/kernel/cpufeature.c | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
    index 6424584be01e6..9d0e4afdc8caa 100644
    --- a/arch/arm64/kernel/cpufeature.c
    +++ b/arch/arm64/kernel/cpufeature.c
    @@ -1333,6 +1333,8 @@ 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 */ }
    --
    2.27.0
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