Thread (27 messages) 27 messages, 5 authors, 2017-08-29

[PATCH RFC v3 2/9] KVM: arm/arm64: fix vcpu self-detection in vgic_v3_dispatch_sgi()

From: Christoffer Dall <hidden>
Date: 2017-08-29 10:01:01
Also in: kvm, linux-mips, linux-s390, lkml

On Mon, Aug 21, 2017 at 10:35:23PM +0200, Radim Kr?m?? wrote:
The index in kvm->vcpus array and vcpu->vcpu_id are very different
things.  Comparing struct kvm_vcpu pointers is a sure way to know.

Signed-off-by: Radim Kr?m?? <redacted>
Acked-by: Christoffer Dall <redacted>
quoted hunk ↗ jump to hunk
---
 virt/kvm/arm/vgic/vgic-mmio-v3.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index 408ef06638fc..9d4b69b766ec 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -797,7 +797,6 @@ void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg)
 	u16 target_cpus;
 	u64 mpidr;
 	int sgi, c;
-	int vcpu_id = vcpu->vcpu_id;
 	bool broadcast;
 
 	sgi = (reg & ICC_SGI1R_SGI_ID_MASK) >> ICC_SGI1R_SGI_ID_SHIFT;
@@ -821,7 +820,7 @@ void vgic_v3_dispatch_sgi(struct kvm_vcpu *vcpu, u64 reg)
 			break;
 
 		/* Don't signal the calling VCPU */
-		if (broadcast && c == vcpu_id)
+		if (broadcast && c_vcpu == vcpu)
 			continue;
 
 		if (!broadcast) {
-- 
2.13.3
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