D Scott Phillips 52c2329147 arm64: Add AMPERE1 to the Spectre-BHB affected list ...

[ Upstream commit 0e5d5ae837c8ce04d2ddb874ec5f920118bd9d31 ]

Per AmpereOne erratum AC03_CPU_12, "Branch history may allow control of
speculative execution across software contexts," the AMPERE1 core needs the
bhb clearing loop to mitigate Spectre-BHB, with a loop iteration count of
11.

Signed-off-by: D Scott Phillips <scott@os.amperecomputing.com>
Link: https://lore.kernel.org/r/20221011022140.432370-1-scott@os.amperecomputing.com
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-11-03 23:59:20 +09:00

..

asm

arm64: Add AMPERE1 to the Spectre-BHB affected list

2022-11-03 23:59:20 +09:00

uapi/asm

KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated

2022-03-11 12:22:35 +01:00