From: Krish Sadhukhan <krish.sadhukhan@oracle.com>
To: kvm@vger.kernel.org
Cc: pbonzini@redhat.com, jmattson@google.com, seanjc@google.com
Subject: [PATCH 1/4 v2] KVM: nVMX: Reset 'nested_run_pending' only in guest mode
Date: Wed, 19 May 2021 20:50:09 -0400 [thread overview]
Message-ID: <20210520005012.68377-2-krish.sadhukhan@oracle.com> (raw)
In-Reply-To: <20210520005012.68377-1-krish.sadhukhan@oracle.com>
Currently, vmx_vcpu_run() resets 'nested_run_pending' irrespective of whether
it is in guest mode. 'nested_run_pending' matters only to guest mode and
hence reset it only in guest mode.
Signed-off-by: Krish Sadhukhan <Krish.Sadhukhan@oracle.com>
---
arch/x86/kvm/vmx/vmx.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index f2fd447eed45..af2be5930ba4 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6839,7 +6839,9 @@ static fastpath_t vmx_vcpu_run(struct kvm_vcpu *vcpu)
kvm_load_host_xsave_state(vcpu);
- vmx->nested.nested_run_pending = 0;
+ if (is_guest_mode(vcpu))
+ vmx->nested.nested_run_pending = 0;
+
vmx->idt_vectoring_info = 0;
if (unlikely(vmx->fail)) {
--
2.27.0
next prev parent reply other threads:[~2021-05-20 1:39 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-20 0:50 [PATCH 0/4 v2] KVM: nVMX: nSVM: Add more statistics to KVM debugfs Krish Sadhukhan
2021-05-20 0:50 ` Krish Sadhukhan [this message]
2021-05-20 15:00 ` [PATCH 1/4 v2] KVM: nVMX: Reset 'nested_run_pending' only in guest mode Sean Christopherson
2021-05-20 0:50 ` [PATCH 2/4 v2] KVM: nVMX: nSVM: 'nested_run' should count guest-entry attempts that make it to guest code Krish Sadhukhan
2021-05-20 14:53 ` Sean Christopherson
2021-05-20 17:58 ` Krish Sadhukhan
2021-05-20 0:50 ` [PATCH 3/4 v2] KVM: nVMX: nSVM: Add a new debugfs statistic to show how many VCPUs have run nested guests Krish Sadhukhan
2021-05-20 14:56 ` Sean Christopherson
2021-05-20 16:57 ` Jim Mattson
2021-05-20 18:01 ` Krish Sadhukhan
2021-05-20 0:50 ` [PATCH 4/4 v2] KVM: x86: Add a new VM statistic to show number of VCPUs created in a given VM Krish Sadhukhan
2021-05-20 15:04 ` Sean Christopherson
2021-05-21 18:06 ` Krish Sadhukhan
2021-05-27 17:46 ` Sean Christopherson
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