From: Keir Fraser <keir.fraser@citrix.com>
Date: Wed, 21 Oct 2009 15:07:37 +0000 (+0100)
Subject: x86: Initialize the affinity field after assigning the vector.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~13188
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=9cd9340a83eef7e52b0444c5d927eca149a25cc9;p=xen.git

x86: Initialize the affinity field after assigning the vector.

To avoid strange output from debug-key "i", desc->affinity should
be the subset of the cfg->domain basically, so copy cfg->domain to
desc->affinity after assigning vector for the irq..

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

diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
index d4bf176d07..510be8db12 100644
--- a/xen/arch/x86/irq.c
+++ b/xen/arch/x86/irq.c
@@ -419,13 +419,16 @@ int assign_irq_vector(int irq)
     int ret;
     unsigned long flags;
     struct irq_cfg *cfg = &irq_cfg[irq];
+    struct irq_desc *desc = irq_to_desc(irq);
     
     BUG_ON(irq >= nr_irqs || irq <0);
 
     spin_lock_irqsave(&vector_lock, flags);
     ret = __assign_irq_vector(irq, cfg, TARGET_CPUS);
-    if (!ret)
+    if (!ret) {
         ret = cfg->vector;
+        cpus_copy(desc->affinity, cfg->domain);
+    }
     spin_unlock_irqrestore(&vector_lock, flags);
     return ret;
 }