arm64: kpti: Add KRYO{3, 4}XX silver CPU cores to kpti safelist

QCOM KRYO{3,4}XX silver/LITTLE CPU cores are based on Cortex-A55
and are meltdown safe, hence add them to kpti_safe_list[].

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Link: https://lore.kernel.org/r/20200624123406.3472-1-saiprakash.ranjan@codeaurora.org
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 4ae4167..9f63053 100644 (file)
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -1290,6 +1290,8 @@ 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_3XX_SILVER),
+               MIDR_ALL_VERSIONS(MIDR_QCOM_KRYO_4XX_SILVER),
                { /* sentinel */ }
        };
        char const *str = "kpti command line option";