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Subject[PATCH 04/30] KVM: nSVM: remove exit_required
Date
All events now inject vmexits before vmentry rather than after vmexit.  Therefore,
exit_required is not set anymore and we can remove it.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/svm/nested.c | 3 +--
arch/x86/kvm/svm/svm.c | 14 --------------
arch/x86/kvm/svm/svm.h | 3 ---
3 files changed, 1 insertion(+), 19 deletions(-)

diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 1ae13fd17028..3d17c62a84a3 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -792,8 +792,7 @@ 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.exit_required ||
- svm->nested.nested_run_pending;
+ kvm_event_needs_reinjection(vcpu) || svm->nested.nested_run_pending;

if (vcpu->arch.exception.pending) {
if (block_nested_events)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 89b6fb1e0abc..545f63ebc720 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -2889,13 +2889,6 @@ static int handle_exit(struct kvm_vcpu *vcpu, fastpath_t exit_fastpath)
if (npt_enabled)
vcpu->arch.cr3 = svm->vmcb->save.cr3;

- if (unlikely(svm->nested.exit_required)) {
- nested_svm_vmexit(svm);
- svm->nested.exit_required = false;
-
- return 1;
- }
-
if (is_guest_mode(vcpu)) {
int vmexit;

@@ -3327,13 +3320,6 @@ static fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
svm->vmcb->save.rsp = vcpu->arch.regs[VCPU_REGS_RSP];
svm->vmcb->save.rip = vcpu->arch.regs[VCPU_REGS_RIP];

- /*
- * A vmexit emulation is required before the vcpu can be executed
- * again.
- */
- if (unlikely(svm->nested.exit_required))
- return EXIT_FASTPATH_NONE;
-
/*
* Disable singlestep if we're injecting an interrupt/exception.
* We don't want our modified rflags to be pushed on the stack where
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h
index 8342032291fc..89fab75dd4f5 100644
--- a/arch/x86/kvm/svm/svm.h
+++ b/arch/x86/kvm/svm/svm.h
@@ -95,9 +95,6 @@ struct nested_state {
u64 vmcb_msrpm;
u64 vmcb_iopm;

- /* A VMEXIT is required but not yet emulated */
- bool exit_required;
-
/* A VMRUN has started but has not yet been performed, so
* we cannot inject a nested vmexit yet. */
bool nested_run_pending;
--
2.26.2

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