[Xen-devel] [PATCH 3/6] xen/arm: do not add a second irq to the LRs if one is already present

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

When the guest re-enable IRQs, do not add guest IRQs to LRs twice.

Suggested-by: Julien Grall <julien.grall@xxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 xen/arch/arm/vgic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index c71db37..969ad2d 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -372,7 +372,7 @@ static void vgic_enable_irqs(struct vcpu *v, uint32_t r, 
int n)
     while ( (i = find_next_bit((const long unsigned int *) &r, 32, i)) < 32 ) {
         irq = i + (32 * n);
         p = irq_to_pending(v, irq);
-        if ( !list_empty(&p->inflight) )
+        if ( !list_empty(&p->inflight) && !(p->status & GIC_IRQ_GUEST_VISIBLE) 
)
             gic_set_guest_irq(v, irq, GICH_LR_PENDING, p->priority);
         i++;
     }
-- 
1.7.10.4


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