James Morse 531b5ce9dd UPSTREAM: arm64: Use the clearbhb instruction in mitigations ... Future CPUs may implement a clearbhb instruction that is sufficient to mitigate SpectreBHB. CPUs that implement this instruction, but not CSV2.3 must be affected by Spectre-BHB. Add support to use this instruction as the BHB mitigation on CPUs that support it. The instruction is in the hint space, so it will be treated by a NOP as older CPUs. Bug: 215557547 Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: James Morse <james.morse@arm.com> (cherry picked from commit 228a26b912) Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ie233d92acfaed7b44ac255472ddb06367660384d		2022-03-18 09:57:38 +01:00
..
asm	UPSTREAM: arm64: Use the clearbhb instruction in mitigations	2022-03-18 09:57:38 +01:00
uapi/asm	UPSTREAM: KVM: arm64: Allow SMCCC_ARCH_WORKAROUND_3 to be discovered and migrated	2022-03-18 09:57:33 +01:00