On 24.08.2017 12:12, Paolo Bonzini wrote: > Move it to struct kvm_arch_vcpu, replacing guest_pkru_valid with a > simple comparison against the host value of the register. The write of > PKRU in addition can be skipped if the guest has not enabled the feature. > Once we do this, we need not test OSPKE in the host anymore, because > guest_CR4.PKE=1 implies host_CR4.PKE=1. > > The static PKU test is kept to elide the code on older CPUs. >From what I can tell, this looks good to me! -- Thanks, David