Patch-mainline: v5.16-rc4
Git-commit: e90e51d5f01d2baae5dcce280866bbb96816e978
References: bsc#1205007
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue, 30 Nov 2021 07:36:41 -0500
Subject: [PATCH] KVM: VMX: clear vmx_x86_ops.sync_pir_to_irr if APICv is
disabled
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>
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/kvm/vmx/vmx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 1fadec8cbf96..f90448809690 100644
--- 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;
--
2.35.3