ARM: GIC: export and extend vgic_init_pending_irq()

For LPIs we later want to dynamically allocate struct pending_irqs.
So beside needing to initialize the struct from there we also need
to clean it up and re-initialize it later on.
Export vgic_init_pending_irq() and extend it to be reusable.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Julien Grall <julien.grall@arm.com>

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index cb7ab3b584e45e4a94d8cb6f6abba20bfec56560..d7c4f3274fa165e7205a949aab1bd73b37a8a6bf 100644 (file)
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -60,8 +60,9 @@ struct vgic_irq_rank *vgic_rank_irq(struct vcpu *v, unsigned int irq)
     return vgic_get_rank(v, rank);
 }
 
-static void vgic_init_pending_irq(struct pending_irq *p, unsigned int virq)
+void vgic_init_pending_irq(struct pending_irq *p, unsigned int virq)
 {
+    memset(p, 0, sizeof(*p));
     INIT_LIST_HEAD(&p->inflight);
     INIT_LIST_HEAD(&p->lr_queue);
     p->irq = virq;

diff --git a/xen/include/asm-arm/vgic.h b/xen/include/asm-arm/vgic.h
index 65d232266b47536ba29c80a1a1259a607f234079..9dc487b31cc10c745422c5183505666f0bb66aa8 100644 (file)
--- a/xen/include/asm-arm/vgic.h
+++ b/xen/include/asm-arm/vgic.h
@@ -305,6 +305,7 @@ extern struct vcpu *vgic_get_target_vcpu(struct vcpu *v, unsigned int virq);
 extern void vgic_vcpu_inject_irq(struct vcpu *v, unsigned int virq);
 extern void vgic_vcpu_inject_spi(struct domain *d, unsigned int virq);
 extern void vgic_clear_pending_irqs(struct vcpu *v);
+extern void vgic_init_pending_irq(struct pending_irq *p, unsigned int virq);
 extern struct pending_irq *irq_to_pending(struct vcpu *v, unsigned int irq);
 extern struct pending_irq *spi_to_pending(struct domain *d, unsigned int irq);
 extern struct vgic_irq_rank *vgic_rank_offset(struct vcpu *v, int b, int n, int s);