c28762070ca651fe7a981b8f31d972c9b7d2c386 - SHIFTPHONES/kernel/common

commit	c28762070ca651fe7a981b8f31d972c9b7d2c386	[log] [tgz]
author	Will Deacon <will@kernel.org>	Fri Sep 18 11:54:33 2020 +0100
committer	Will Deacon <will@kernel.org>	Tue Sep 29 16:08:16 2020 +0100
tree	907e7cdfc0461b55880ac1ecccc54e460797f219
parent	9e78b659b4539ee20fd0c415cf8c231cea59e9c0 [diff]

arm64: Rewrite Spectre-v4 mitigation code

Rewrite the Spectre-v4 mitigation handling code to follow the same
approach as that taken by Spectre-v2.

For now, report to KVM that the system is vulnerable (by forcing
'ssbd_state' to ARM64_SSBD_UNKNOWN), as this will be cleared up in
subsequent steps.

Signed-off-by: Will Deacon <will@kernel.org>

arch/arm64/include/asm/processor.h[diff]
arch/arm64/include/asm/spectre.h[diff]
arch/arm64/kernel/cpu_errata.c[diff]
arch/arm64/kernel/cpufeature.c[diff]
arch/arm64/kernel/entry.S[diff]
arch/arm64/kernel/hibernate.c[diff]
arch/arm64/kernel/process.c[diff]
arch/arm64/kernel/proton-pack.c[diff]
arch/arm64/kernel/suspend.c[diff]

9 files changed

tree: 907e7cdfc0461b55880ac1ecccc54e460797f219