提交 a7d5c7ce 编写于 作者: P Paolo Bonzini

KVM: nSVM: delay MSR permission processing to first nested VM run

Allow userspace to set up the memory map after KVM_SET_NESTED_STATE;
to do so, move the call to nested_svm_vmrun_msrpm inside the
KVM_REQ_GET_NESTED_STATE_PAGES handler (which is currently
not used by nSVM).  This is similar to what VMX does already.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
上级 729c15c2
...@@ -196,6 +196,20 @@ static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm) ...@@ -196,6 +196,20 @@ static bool nested_svm_vmrun_msrpm(struct vcpu_svm *svm)
return true; return true;
} }
static bool svm_get_nested_state_pages(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
if (!nested_svm_vmrun_msrpm(svm)) {
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror =
KVM_INTERNAL_ERROR_EMULATION;
vcpu->run->internal.ndata = 0;
return false;
}
return true;
}
static bool nested_vmcb_check_controls(struct vmcb_control_area *control) static bool nested_vmcb_check_controls(struct vmcb_control_area *control)
{ {
if ((vmcb_is_intercept(control, INTERCEPT_VMRUN)) == 0) if ((vmcb_is_intercept(control, INTERCEPT_VMRUN)) == 0)
...@@ -698,6 +712,8 @@ void svm_leave_nested(struct vcpu_svm *svm) ...@@ -698,6 +712,8 @@ void svm_leave_nested(struct vcpu_svm *svm)
copy_vmcb_control_area(&vmcb->control, &hsave->control); copy_vmcb_control_area(&vmcb->control, &hsave->control);
nested_svm_uninit_mmu_context(&svm->vcpu); nested_svm_uninit_mmu_context(&svm->vcpu);
} }
kvm_clear_request(KVM_REQ_GET_NESTED_STATE_PAGES, &svm->vcpu);
} }
static int nested_svm_exit_handled_msr(struct vcpu_svm *svm) static int nested_svm_exit_handled_msr(struct vcpu_svm *svm)
...@@ -1142,9 +1158,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu, ...@@ -1142,9 +1158,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
load_nested_vmcb_control(svm, ctl); load_nested_vmcb_control(svm, ctl);
nested_prepare_vmcb_control(svm); nested_prepare_vmcb_control(svm);
if (!nested_svm_vmrun_msrpm(svm)) kvm_make_request(KVM_REQ_GET_NESTED_STATE_PAGES, vcpu);
goto out_free;
ret = 0; ret = 0;
out_free: out_free:
kfree(save); kfree(save);
...@@ -1155,6 +1169,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu, ...@@ -1155,6 +1169,7 @@ static int svm_set_nested_state(struct kvm_vcpu *vcpu,
struct kvm_x86_nested_ops svm_nested_ops = { struct kvm_x86_nested_ops svm_nested_ops = {
.check_events = svm_check_nested_events, .check_events = svm_check_nested_events,
.get_nested_state_pages = svm_get_nested_state_pages,
.get_state = svm_get_nested_state, .get_state = svm_get_nested_state,
.set_state = svm_set_nested_state, .set_state = svm_set_nested_state,
}; };
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册