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arm64: kpti: Add NVIDIA's Carmel core to the KPTI whitelist
author
Rich Wiley
<rwiley@nvidia.com>
Tue, 5 Nov 2019 18:45:10 +0000
(10:45 -0800)
committer
Catalin Marinas
<catalin.marinas@arm.com>
Wed, 6 Nov 2019 11:31:03 +0000
(11:31 +0000)
NVIDIA Carmel CPUs don't implement ID_AA64PFR0_EL1.CSV3 but
aren't susceptible to Meltdown, so add Carmel to kpti_safe_list[].
Signed-off-by: Rich Wiley <rwiley@nvidia.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
arch/arm64/kernel/cpufeature.c
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diff --git
a/arch/arm64/kernel/cpufeature.c
b/arch/arm64/kernel/cpufeature.c
index
cabebf1
..
b3eea96
100644
(file)
--- a/
arch/arm64/kernel/cpufeature.c
+++ b/
arch/arm64/kernel/cpufeature.c
@@
-977,6
+977,7
@@
static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
MIDR_ALL_VERSIONS(MIDR_CORTEX_A73),
MIDR_ALL_VERSIONS(MIDR_HISI_TSV110),
+ MIDR_ALL_VERSIONS(MIDR_NVIDIA_CARMEL),
{ /* sentinel */ }
};
char const *str = "kpti command line option";