From: chenjiajun <chenjiajun8@huawei.com> virt inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I919BF CVE: NA ------------------------------------------- At present, there is a flaw in the statistics of KVM exits by debugfs, which only counts trigger times of exits processing function in kvm_vmx_exit_handlers. The kvm exits handles in vmx_exit_handlers_fastpath is omitted, so there is a large numerical error in EXIT_REASON_MSR_WRITE statistics sometimes. Signed-off-by: chenjiajun <chenjiajun8@huawei.com> Signed-off-by: liangtian <liangtian13@huawei.com> --- arch/x86/kvm/vmx/vmx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 2ceab7c8d189..f98b7fcda05b 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7216,6 +7216,7 @@ static fastpath_t vmx_exit_handlers_fastpath(struct kvm_vcpu *vcpu) { switch (to_vmx(vcpu)->exit_reason.basic) { case EXIT_REASON_MSR_WRITE: + ++vcpu->stat.msr_wr_exits; return handle_fastpath_set_msr_irqoff(vcpu); case EXIT_REASON_PREEMPTION_TIMER: return handle_fastpath_preemption_timer(vcpu); -- 2.33.0