[Xen-changelog] [xen-unstable] x86: Fix pirq teardown on domain destruction.

[Xen patchbot-unstable <patchbot@xxxxxxx>]

# HG changeset patch
# User Wei Gang <gang.wei@xxxxxxxxx>
# Date 1296032052 0
# Node ID e7f44fb4ecc378665d2cfd2353693a9f1a00cd72
# Parent  4785c70c2b6d1d8ab4dab3aa7431ef32d0c56362
x86: Fix pirq teardown on domain destruction.

The privilege check in unmap_domain_pirq() fails since the teardown
completes in RCU (idle domain) context. We can remove the check since
it is covered in physdev_op() already, which is the only potentially
unprivileged caller.

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
---
 xen/arch/x86/irq.c |    3 ---
 1 files changed, 3 deletions(-)

diff -r 4785c70c2b6d -r e7f44fb4ecc3 xen/arch/x86/irq.c
--- a/xen/arch/x86/irq.c        Wed Jan 26 08:45:40 2011 +0000
+++ b/xen/arch/x86/irq.c        Wed Jan 26 08:54:12 2011 +0000
@@ -1567,9 +1567,6 @@ int unmap_domain_pirq(struct domain *d, 
     if ( (pirq < 0) || (pirq >= d->nr_pirqs) )
         return -EINVAL;
 
-    if ( !IS_PRIV_FOR(current->domain, d) )
-        return -EINVAL;
-
     ASSERT(spin_is_locked(&pcidevs_lock));
     ASSERT(spin_is_locked(&d->event_lock));
 

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