James Morse 194240faf6 UPSTREAM: arm64: Use the clearbhb instruction in mitigations ... commit 228a26b912287934789023b4132ba76065d9491c upstream. 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> [ modified for stable: Use a KVM vector template instead of alternatives, removed bitmap of mitigations ] Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Ic48741d6d4e7ad14bcf802ab58b082128c5f5a01		2022-03-17 18:06:46 +01:00
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debug-sr.c	KVM: arm64: nvhe: Save the SPE context early	2021-03-20 10:39:46 +01:00
entry.S
fpsimd.S
hyp-entry.S	UPSTREAM: arm64: Use the clearbhb instruction in mitigations	2022-03-17 18:06:46 +01:00
Makefile
switch.c	UPSTREAM: arm64: Add percpu vectors for EL1	2022-03-17 18:06:30 +01:00
sysreg-sr.c
tlb.c
vgic-v2-cpuif-proxy.c