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Commit 9690396c authored by Srinivas Ramana's avatar Srinivas Ramana Committed by Gerrit - the friendly Code Review server
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arch: arm64: Add midr values for kryo2xx big cores 



Add midr value for kryo2xx big cores to apply errata workarounds for
branch prediction hardening.

Change-Id: I7ca9cfa3e6b48d5af78a5297cb76ebe6f52e519e
Signed-off-by: default avatarSrinivas Ramana <sramana@codeaurora.org>
parent 3012db7f

arch/arm64/include/asm/cputype.h

+2 −0
Original line number Diff line number Diff line
@@ -99,6 +99,8 @@ 
#define MIDR_THUNDERX	MIDR_CPU_MODEL(ARM_CPU_IMP_CAVIUM, CAVIUM_CPU_PART_THUNDERX)

#define MIDR_KRYO2XX_SILVER \

	MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, ARM_CPU_PART_KRYO2XX_SILVER)

#define MIDR_KRYO2XX_GOLD \

	MIDR_CPU_MODEL(ARM_CPU_IMP_QCOM, ARM_CPU_PART_KRYO2XX_GOLD)



#ifndef __ASSEMBLY__

arch/arm64/kernel/cpu_errata.c

+5 −0
Original line number Diff line number Diff line
@@ -225,6 +225,11 @@ const struct arm64_cpu_capabilities arm64_errata[] = { 
		MIDR_ALL_VERSIONS(MIDR_CORTEX_A75),

		.enable = enable_psci_bp_hardening,

	},

	{

		.capability = ARM64_HARDEN_BRANCH_PREDICTOR,

		MIDR_ALL_VERSIONS(MIDR_KRYO2XX_GOLD),

		.enable = enable_psci_bp_hardening,

	},

#endif

	{

	}