[Xen-changelog] [xen-unstable] VT-d: Do CLFLUSH after updating IRTE entries

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1214908855 -3600
# Node ID 0b7f7c564c83fafeecc5a08aeeda2d69dcfd73ae
# Parent  0c5183e764d8dfc3d916b4f216b3b6c484caccc9
VT-d: Do CLFLUSH after updating IRTE entries

Like root, context and DMA remap page table, interrupt remap table
also needs CLFLUSH after any update.

Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
---
 xen/drivers/passthrough/vtd/intremap.c |    2 ++
 1 files changed, 2 insertions(+)

diff -r 0c5183e764d8 -r 0b7f7c564c83 xen/drivers/passthrough/vtd/intremap.c
--- a/xen/drivers/passthrough/vtd/intremap.c    Tue Jul 01 11:40:07 2008 +0100
+++ b/xen/drivers/passthrough/vtd/intremap.c    Tue Jul 01 11:40:55 2008 +0100
@@ -153,6 +153,7 @@ static void ioapic_rte_to_remap_entry(st
     }
 
     memcpy(iremap_entry, &new_ire, sizeof(struct iremap_entry));
+    iommu_flush_cache_entry(iremap_entry);
     iommu_flush_iec_index(iommu, 0, index);
     invalidate_sync(iommu);
 
@@ -378,6 +379,7 @@ static void msi_msg_to_remap_entry(
     remap_rte->data = 0;
 
     memcpy(iremap_entry, &new_ire, sizeof(struct iremap_entry));
+    iommu_flush_cache_entry(iremap_entry);
     iommu_flush_iec_index(iommu, 0, index);
     invalidate_sync(iommu);
 

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