Andre Przywara 99adb56763 KVM: arm/arm64: Add save/restore support for firmware workaround state ... KVM implements the firmware interface for mitigating cache speculation vulnerabilities. Guests may use this interface to ensure mitigation is active. If we want to migrate such a guest to a host with a different support level for those workarounds, migration might need to fail, to ensure that critical guests don't loose their protection. Introduce a way for userland to save and restore the workarounds state. On restoring we do checks that make sure we don't downgrade our mitigation level. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Steven Price <steven.price@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>		2019-07-05 13:56:27 +01:00
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asm	KVM: arm/arm64: Add save/restore support for firmware workaround state	2019-07-05 13:56:27 +01:00