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[Xen-devel] x86: Enhance guest's interrupt affinity setting.

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: [Xen-devel] x86: Enhance guest's interrupt affinity setting.
From: "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
Date: Fri, 25 Dec 2009 23:34:32 +0800
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Thread-topic: x86: Enhance guest's interrupt affinity setting.
# HG changeset patch
# User root@vt-dp6
# Date 1261754905 -28800
# Node ID 3af667cf9a5814268aabb212f5b6892ed1da31cf
# Parent  8f304c003af49d3b20aff5a6c2c963a7af696378
x86: Enhance guest's interrupt affinity setting.
When guest uses logical flat destionation mode
for interrupt delivery, vector doesn't change
but destionation also can change, so should
enhance the check condition.
Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
diff -r 8f304c003af4 -r 3af667cf9a58 xen/drivers/passthrough/io.c
--- a/xen/drivers/passthrough/io.c Wed Dec 09 10:59:31 2009 +0000
+++ b/xen/drivers/passthrough/io.c Fri Dec 25 23:28:25 2009 +0800
@@ -199,7 +199,8 @@ int pt_irq_create_bind_vtd(
             /* if pirq is already mapped as vmsi, update the guest data/addr */
-            if ( hvm_irq_dpci->mirq[pirq].gmsi.gvec != pt_irq_bind->u.msi.gvec 
) {
+            if ( hvm_irq_dpci->mirq[pirq].gmsi.gvec != pt_irq_bind->u.msi.gvec 
+                hvm_irq_dpci->mirq[pirq].gmsi.gflags != 
pt_irq_bind->u.msi.gflags) {
                 hvm_irq_dpci->mirq[pirq].gmsi.old_gvec =
                 hvm_irq_dpci->mirq[pirq].gmsi.old_gflags =

Attachment: enhance-guest-intr-affinity-setting.patch
Description: enhance-guest-intr-affinity-setting.patch

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