[PATCH v2 17/43] KVM: x86: Directly block (instead of "halting") UNINITIALIZED vCPUs

Sean Christopherson seanjc at google.com
Fri Oct 8 19:12:10 PDT 2021


Go directly to kvm_vcpu_block() when handling the case where userspace
attempts to run an UNINITIALIZED vCPU.  The vCPU is not halted, nor is it
likely that halt-polling will be successful in this case.

Reviewed-by: David Matlack <dmatlack at google.com>
Signed-off-by: Sean Christopherson <seanjc at google.com>
---
 arch/x86/kvm/x86.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e6c17bbed25c..cd51f100e906 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -10133,7 +10133,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu)
 			r = -EINTR;
 			goto out;
 		}
-		kvm_vcpu_halt(vcpu);
+		kvm_vcpu_block(vcpu);
 		if (kvm_apic_accept_events(vcpu) < 0) {
 			r = 0;
 			goto out;
-- 
2.33.0.882.g93a45727a2-goog




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