x86: Change Xen hypervisor's interrupt infrastructure

from vector-based to IRQ-based.

In per-cpu vector environment, vector space changes to
multi-demension resource, so vector number is not appropriate
to index irq_desc which stands for unique interrupt source. As
Linux does, irq number is chosen to index irq_desc. This patch
changes vector-based interrupt infrastructure to irq-based one.
Mostly, it follows upstream linux's changes, and some parts are
adapted for Xen.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/xen/include/xen/iommu.h b/xen/include/xen/iommu.h
index 3468ebcaaf..402914d603 100644
--- a/xen/include/xen/iommu.h
+++ b/xen/include/xen/iommu.h
@@ -53,7 +53,7 @@ struct iommu {
     spinlock_t lock; /* protect context, domain ids */
     spinlock_t register_lock; /* protect iommu register handling */
     u64 root_maddr; /* root entry machine address */
-    int vector;
+    int irq;
     struct intel_iommu *intel;
 };