xen/arm: vgic: Add spi_to_pending

Introduce spi_to_pending in order retrieve the irq_pending structure for
a specific SPI.

It's not possible to re-use irq_to_pending because it's required a VCPU
and some call of the new function may during domain destruction after
the VCPUs are freed.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index 0d30e2ca15877dc8ba0894d2c246ad0229287d42..c1fa4bbd329cbc487b612e00c08d5c42b14fcf74 100644 (file)
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -371,6 +371,13 @@ struct pending_irq *irq_to_pending(struct vcpu *v, unsigned int irq)
     return n;
 }
 
+struct pending_irq *spi_to_pending(struct domain *d, unsigned int irq)
+{
+    ASSERT(irq >= NR_LOCAL_IRQS);
+
+    return &d->arch.vgic.pending_irqs[irq - 32];
+}
+
 void vgic_clear_pending_irqs(struct vcpu *v)
 {
     struct pending_irq *p, *t;

diff --git a/xen/include/asm-arm/vgic.h b/xen/include/asm-arm/vgic.h
index 647f2fee837caadac95b6318f01ed752c4c58754..8d22532327d072b4716174f0a1129ea15d52a64e 100644 (file)
--- a/xen/include/asm-arm/vgic.h
+++ b/xen/include/asm-arm/vgic.h
@@ -185,6 +185,7 @@ 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 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);
 extern struct vgic_irq_rank *vgic_rank_irq(struct vcpu *v, unsigned int irq);
 extern int vgic_emulate(struct cpu_user_regs *regs, union hsr hsr);