diff mbox

[Xen-devel,v8,06/13] xen/arm: keep track of the GICH_LR used for the irq in struct pending_irq

Message ID 1400761950-25035-6-git-send-email-stefano.stabellini@eu.citrix.com
State Superseded
Headers show

Commit Message

Stefano Stabellini May 22, 2014, 12:32 p.m. UTC 
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

---

Changes in v5:
- don't print p->lr in case the irq is in lr_pending, as it doesn't have
an LR associate to it;
- improve packing of struct pending_irq;
- #define GIC_INVALID_LR and use it instead of nr_lrs.
---
 xen/arch/arm/gic.c           |    4 +++-
 xen/include/asm-arm/domain.h |    4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

Comments

Julien Grall May 22, 2014, 3:37 p.m. UTC | #1 
Hi Stefano,

Sorry, I'm jumping into the discussion a bit late.

On 22/05/14 13:32, Stefano Stabellini wrote:
> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Acked-by: Ian Campbell <ian.campbell@citrix.com>
>
> ---
>
> Changes in v5:
> - don't print p->lr in case the irq is in lr_pending, as it doesn't have
> an LR associate to it;
> - improve packing of struct pending_irq;

As the above line will be dropped when this patch will be committed 
(because it's after the ---), it won't be clear why you move the irq field.

Could you add a line in the commit message?

Other than that:
Acked-by: Julien Grall <julien.grall@linaro.org>

Regards,
diff mbox

Patch

diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index 15bee85..fa521ab 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -560,6 +560,7 @@  static inline void gic_set_lr(int lr, struct pending_irq *p,
 
     set_bit(GIC_IRQ_GUEST_VISIBLE, &p->status);
     clear_bit(GIC_IRQ_GUEST_PENDING, &p->status);
+    p->lr = lr;
 }
 
 static inline void gic_add_to_lr_pending(struct vcpu *v, struct pending_irq *n)
@@ -635,6 +636,7 @@  static void gic_update_one_lr(struct vcpu *v, int i)
         if ( p->desc != NULL )
             p->desc->status &= ~IRQ_INPROGRESS;
         clear_bit(GIC_IRQ_GUEST_VISIBLE, &p->status);
+        p->lr = GIC_INVALID_LR;
         if ( test_bit(GIC_IRQ_GUEST_PENDING, &p->status) &&
                 test_bit(GIC_IRQ_GUEST_ENABLED, &p->status))
             gic_set_guest_irq(v, irq, GICH_LR_PENDING, p->priority);
@@ -844,7 +846,7 @@  void gic_dump_info(struct vcpu *v)
 
     list_for_each_entry ( p, &v->arch.vgic.inflight_irqs, inflight )
     {
-        printk("Inflight irq=%d\n", p->irq);
+        printk("Inflight irq=%d lr=%u\n", p->irq, p->lr);
     }
 
     list_for_each_entry( p, &v->arch.vgic.lr_pending, lr_queue )
diff --git a/xen/include/asm-arm/domain.h b/xen/include/asm-arm/domain.h
index aabeb51..e5db9e3 100644
--- a/xen/include/asm-arm/domain.h
+++ b/xen/include/asm-arm/domain.h
@@ -21,7 +21,6 @@  struct vgic_irq_rank {
 
 struct pending_irq
 {
-    int irq;
     /*
      * The following two states track the lifecycle of the guest irq.
      * However because we are not sure and we don't want to track
@@ -60,6 +59,9 @@  struct pending_irq
 #define GIC_IRQ_GUEST_ENABLED  2
     unsigned long status;
     struct irq_desc *desc; /* only set it the irq corresponds to a physical irq */
+    int irq;
+#define GIC_INVALID_LR         ~(uint8_t)0
+    uint8_t lr;
     uint8_t priority;
     /* inflight is used to append instances of pending_irq to
      * vgic.inflight_irqs */