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KVM: nSVM: correctly inject INIT vmexits 

The usual drill at this point, except there is no code to remove because this
case was not handled at all.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-05-16 08:50:35 -04:00
parent bd279629f7
commit 5b67240866
1 changed files with 27 additions and 0 deletions
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27
arch/x86/kvm/svm/nested.c
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@ -25,6 +25,7 @@
#include "trace.h"
#include "mmu.h"
#include "x86.h"
#include "lapic.h"
#include "svm.h"
static void nested_svm_inject_npf_exit(struct kvm_vcpu *vcpu,
@ -788,11 +789,37 @@ static void nested_svm_intr(struct vcpu_svm *svm)
nested_svm_vmexit(svm);
}
static inline bool nested_exit_on_init(struct vcpu_svm *svm)
{
return (svm->nested.intercept & (1ULL << INTERCEPT_INIT));
}
static void nested_svm_init(struct vcpu_svm *svm)
{
svm->vmcb->control.exit_code = SVM_EXIT_INIT;
svm->vmcb->control.exit_info_1 = 0;
svm->vmcb->control.exit_info_2 = 0;
nested_svm_vmexit(svm);
}
static int svm_check_nested_events(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
bool block_nested_events =
kvm_event_needs_reinjection(vcpu) || svm->nested.nested_run_pending;
struct kvm_lapic *apic = vcpu->arch.apic;
if (lapic_in_kernel(vcpu) &&
test_bit(KVM_APIC_INIT, &apic->pending_events)) {
if (block_nested_events)
return -EBUSY;
if (!nested_exit_on_init(svm))
return 0;
nested_svm_init(svm);
return 0;
}
if (vcpu->arch.exception.pending) {
if (block_nested_events)