[Xen-devel] [PATCH 06/15] xen: arm: stub out pirq related functions.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On ARM we use GIC functionality to inject virtualised real interrupts
for h/w devices rather than evtchn-pirqs.

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
 xen/arch/arm/dummy.S |    6 ------
 xen/arch/arm/irq.c   |   29 +++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 6 deletions(-)

diff --git a/xen/arch/arm/dummy.S b/xen/arch/arm/dummy.S
index 5d9bcff..2110bf1 100644
--- a/xen/arch/arm/dummy.S
+++ b/xen/arch/arm/dummy.S
@@ -6,12 +6,6 @@ x:     .word 0xe7f000f0 /* Undefined instruction */
        .globl x; \
 x:     mov pc, lr
        
-/* PIRQ support */
-DUMMY(alloc_pirq_struct);
-DUMMY(pirq_guest_bind);
-DUMMY(pirq_guest_unbind);
-DUMMY(pirq_set_affinity);
-
 /* VCPU */
 NOP(update_vcpu_system_time);
 
diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
index 72e83e6..a50281b 100644
--- a/xen/arch/arm/irq.c
+++ b/xen/arch/arm/irq.c
@@ -192,6 +192,35 @@ out_no_end:
 }
 
 /*
+ * pirq event channels. We don't use these on ARM, instead we use the
+ * features of the GIC to inject virtualised normal interrupts.
+ */
+struct pirq *alloc_pirq_struct(struct domain *d)
+{
+    return NULL;
+}
+
+/*
+ * These are all unreachable given an alloc_pirq_struct
+ * which returns NULL, all callers try to lookup struct pirq first
+ * which will fail.
+ */
+int pirq_guest_bind(struct vcpu *v, struct pirq *pirq, int will_share)
+{
+    BUG();
+}
+
+void pirq_guest_unbind(struct domain *d, struct pirq *pirq)
+{
+    BUG();
+}
+
+void pirq_set_affinity(struct domain *d, int pirq, const cpumask_t *mask)
+{
+    BUG();
+}
+
+/*
  * Local variables:
  * mode: C
  * c-set-style: "BSD"
-- 
1.7.9.1


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