KVM: VMX: Report VNMI emulation

PATCH Superseded Jan Kiszka 1 participant 1 message Oct 1, 2008

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Jan Kiszka

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2008-10-01 08:25 UTC #0 lore raw

PATCH 1/1 KVM: VMX: Report VNMI emulation

In case we ever have to debug possibly NMI-related issues of the guest, it may help to correlate them with the VNMI emulation for older VMX CPUs.

Signed-off-by Jan Kiszka <[email protected]>

---
 arch/x86/kvm/vmx.c |    4 ++++
 1 file changed, 4 insertions(+)

arch/x86/kvm/vmx.c +4 -0

Index: b/arch/x86/kvm/vmx.c
===================================================================
@@ -3671,6 +3671,10 @@ static int __init vmx_init(void)
 
 	ept_sync_global();
 
+	if (!cpu_has_virtual_nmis())
+		printk(KERN_WARNING
+		       "kvm: emulating NMI window via interrupt window\n");
+
 	return 0;
 
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