Commit 31d868c4 authored Jan 06, 2020 by Florian Fainelli Committed by Will Deacon Jan 08, 2020

arm64: kpti: Add Broadcom Brahma-B53 core to the KPTI whitelist



Broadcom Brahma-B53 CPUs do not implement ID_AA64PFR0_EL1.CSV3 but are
not susceptible to Meltdown, so add all Brahma-B53 part numbers to
kpti_safe_list[].

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>

parent b3c75c9d

arch/arm64/kernel/cpufeature.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -975,6 +975,7 @@ static bool unmap_kernel_at_el0(const struct arm64_cpu_capabilities *entry,
		static const struct midr_range kpti_safe_list[] = {
		MIDR_ALL_VERSIONS(MIDR_CAVIUM_THUNDERX2),
		MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN),
		MIDR_ALL_VERSIONS(MIDR_BRAHMA_B53),
		MIDR_ALL_VERSIONS(MIDR_CORTEX_A35),
		MIDR_ALL_VERSIONS(MIDR_CORTEX_A53),
		MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),

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