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| author | Krish Sadhukhan <krish.sadhukhan@oracle.com> | 2021-06-09 14:03:38 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:35 -0400 |
| commit | b93af02c6722fde384ed2e921b71b61b9addb740 (patch) | |
| tree | 7c89605ce65f88f849e458bc3e688f67c8456c29 /arch/x86/kvm/svm/svm.c | |
| parent | ecc513e5bb7ed5d007dcaa533729360e9eb673ba (diff) | |
| download | lwn-b93af02c6722fde384ed2e921b71b61b9addb740.tar.gz lwn-b93af02c6722fde384ed2e921b71b61b9addb740.zip | |
KVM: nVMX: nSVM: 'nested_run' should count guest-entry attempts that make it to guest code
Currently, the 'nested_run' statistic counts all guest-entry attempts,
including those that fail during vmentry checks on Intel and during
consistency checks on AMD. Convert this statistic to count only those
guest-entries that make it past these state checks and make it to guest
code. This will tell us the number of guest-entries that actually executed
or tried to execute guest code.
Signed-off-by: Krish Sadhukhan <Krish.Sadhukhan@oracle.com>
Message-Id: <20210609180340.104248-2-krish.sadhukhan@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index e7bec71a3d9b..d223f5dfac53 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3844,6 +3844,12 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu) svm->next_rip = 0; if (is_guest_mode(vcpu)) { nested_sync_control_from_vmcb02(svm); + + /* Track VMRUNs that have made past consistency checking */ + if (svm->nested.nested_run_pending && + svm->vmcb->control.exit_code != SVM_EXIT_ERR) + ++vcpu->stat.nested_run; + svm->nested.nested_run_pending = 0; } |