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KVM: VMX: clear vmx_x86_ops.sync_pir_to_irr if APICv is disabled
author
Paolo Bonzini
<pbonzini@redhat.com>
Tue, 30 Nov 2021 12:36:41 +0000
(07:36 -0500)
committer
Paolo Bonzini
<pbonzini@redhat.com>
Tue, 30 Nov 2021 12:40:47 +0000
(07:40 -0500)
There is nothing to synchronize if APICv is disabled, since neither
other vCPUs nor assigned devices can set PIR.ON.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/vmx/vmx.c
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diff --git
a/arch/x86/kvm/vmx/vmx.c
b/arch/x86/kvm/vmx/vmx.c
index
1fadec8
..
f904488
100644
(file)
--- a/
arch/x86/kvm/vmx/vmx.c
+++ b/
arch/x86/kvm/vmx/vmx.c
@@
-7777,10
+7777,10
@@
static __init int hardware_setup(void)
ple_window_shrink = 0;
}
- if (!cpu_has_vmx_apicv())
{
+ if (!cpu_has_vmx_apicv())
enable_apicv = 0;
+ if (!enable_apicv)
vmx_x86_ops.sync_pir_to_irr = NULL;
- }
if (cpu_has_vmx_tsc_scaling()) {
kvm_has_tsc_control = true;