Re: [PATCH v6 1/3] arm64: KVM: Propagate full Spectre v2 workaround state to KVM guests

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On 03/05/2019 15:27, Andre Przywara wrote:
> Recent commits added the explicit notion of "workaround not required" to
> the state of the Spectre v2 (aka. BP_HARDENING) workaround, where we
> just had "needed" and "unknown" before.
> 
> Export this knowledge to the rest of the kernel and enhance the existing
> kvm_arm_harden_branch_predictor() to report this new state as well.
> Export this new state to guests when they use KVM's firmware interface
> emulation.
> 
> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>

Reviewed-by: Steven Price <steven.price@xxxxxxx>



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