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Diffstat (limited to 'arch/x86/kvm/svm/nested.c')
-rw-r--r--arch/x86/kvm/svm/nested.c39
1 files changed, 21 insertions, 18 deletions
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 3361258640a2..ba7cd26f438f 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -616,6 +616,8 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm)
struct kvm_vcpu *vcpu = &svm->vcpu;
struct vmcb *vmcb01 = svm->vmcb01.ptr;
struct vmcb *vmcb02 = svm->nested.vmcb02.ptr;
+ u32 pause_count12;
+ u32 pause_thresh12;
/*
* Filled at exit: exit_code, exit_code_hi, exit_info_1, exit_info_2,
@@ -671,27 +673,25 @@ static void nested_vmcb02_prepare_control(struct vcpu_svm *svm)
if (!nested_vmcb_needs_vls_intercept(svm))
vmcb02->control.virt_ext |= VIRTUAL_VMLOAD_VMSAVE_ENABLE_MASK;
+ pause_count12 = svm->pause_filter_enabled ? svm->nested.ctl.pause_filter_count : 0;
+ pause_thresh12 = svm->pause_threshold_enabled ? svm->nested.ctl.pause_filter_thresh : 0;
if (kvm_pause_in_guest(svm->vcpu.kvm)) {
- /* use guest values since host doesn't use them */
- vmcb02->control.pause_filter_count =
- svm->pause_filter_enabled ?
- svm->nested.ctl.pause_filter_count : 0;
+ /* use guest values since host doesn't intercept PAUSE */
+ vmcb02->control.pause_filter_count = pause_count12;
+ vmcb02->control.pause_filter_thresh = pause_thresh12;
- vmcb02->control.pause_filter_thresh =
- svm->pause_threshold_enabled ?
- svm->nested.ctl.pause_filter_thresh : 0;
-
- } else if (!vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_PAUSE)) {
- /* use host values when guest doesn't use them */
+ } else {
+ /* start from host values otherwise */
vmcb02->control.pause_filter_count = vmcb01->control.pause_filter_count;
vmcb02->control.pause_filter_thresh = vmcb01->control.pause_filter_thresh;
- } else {
- /*
- * Intercept every PAUSE otherwise and
- * ignore both host and guest values
- */
- vmcb02->control.pause_filter_count = 0;
- vmcb02->control.pause_filter_thresh = 0;
+
+ /* ... but ensure filtering is disabled if so requested. */
+ if (vmcb12_is_intercept(&svm->nested.ctl, INTERCEPT_PAUSE)) {
+ if (!pause_count12)
+ vmcb02->control.pause_filter_count = 0;
+ if (!pause_thresh12)
+ vmcb02->control.pause_filter_thresh = 0;
+ }
}
nested_svm_transition_tlb_flush(vcpu);
@@ -951,8 +951,11 @@ int nested_svm_vmexit(struct vcpu_svm *svm)
vmcb12->control.event_inj = svm->nested.ctl.event_inj;
vmcb12->control.event_inj_err = svm->nested.ctl.event_inj_err;
- if (!kvm_pause_in_guest(vcpu->kvm) && vmcb02->control.pause_filter_count)
+ if (!kvm_pause_in_guest(vcpu->kvm)) {
vmcb01->control.pause_filter_count = vmcb02->control.pause_filter_count;
+ vmcb_mark_dirty(vmcb01, VMCB_INTERCEPTS);
+
+ }
nested_svm_copy_common_state(svm->nested.vmcb02.ptr, svm->vmcb01.ptr);