On 08/07/20 11:36, Vitaly Kuznetsov wrote:
> @@ -4973,7 +4969,28 @@ void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, u32
> cr0, u32 cr4, u32 efer)
> context->mmu_role.as_u64 = new_role.as_u64;
> reset_shadow_zero_bits_mask(vcpu, context);
> }
> -EXPORT_SYMBOL_GPL(kvm_init_shadow_mmu);
> +
> +static void kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, u32 cr0, u32 cr4, u32
> efer)
> +{
> + struct kvm_mmu *context = vcpu->arch.mmu;
> + union kvm_mmu_role new_role =
> + kvm_calc_shadow_mmu_root_page_role(vcpu, false);
> +
> + if (new_role.as_u64 != context->mmu_role.as_u64)
> + shadow_mmu_init_context(vcpu, cr0, cr4, efer, new_role);
> +}
> +
> +void kvm_init_shadow_npt_mmu(struct kvm_vcpu *vcpu, u32 cr0, u32 cr4, u32
> efer,
> + gpa_t nested_cr3)
> +{
> + struct kvm_mmu *context = vcpu->arch.mmu;
> + union kvm_mmu_role new_role =
> + kvm_calc_shadow_mmu_root_page_role(vcpu, false);
> +
> + if (new_role.as_u64 != context->mmu_role.as_u64)
> + shadow_mmu_init_context(vcpu, cr0, cr4, efer, new_role);
> +}
> +EXPORT_SYMBOL_GPL(kvm_init_shadow_npt_mmu);
>
> static union kvm_mmu_role
As a follow up, the assignments to context should stop using
vcpu->arch.mmu in favor of root_mmu/guest_mmu.
Paolo
