Re: [RFC 5/7] KVM: MMU: Add support for PKS emulation
From: Paolo Bonzini
Date: Tue Jan 26 2021 - 20:34:36 EST
On 07/08/20 10:48, Chenyi Qiang wrote:
if (pte_access & PT_USER_MASK)
pkr_bits = (vcpu->arch.pkru >> (pte_pkey * 2)) & 3;
+ else if (!kvm_get_msr(vcpu, MSR_IA32_PKRS, &pkrs))
+ pkr_bits = (pkrs >> (pte_pkey * 2)) & 3;
You should be able to always use vcpu->arch.pkrs here. So
pkr = pte_access & PT_USER_MASK ? vcpu->arch.pkru : vcpu->arch.pkrs;
pkr_bits = (pkr >> pte_pkey * 2) & 3;
Paolo