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[Xen-changelog] [xen-unstable] x86: 32on64 oversight in update_va_mappin

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Subject:	[Xen-changelog] [xen-unstable] x86: 32on64 oversight in update_va_mapping
From:	Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Thu, 15 Mar 2007 05:30:22 -0700
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# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1173955138 0
# Node ID 8fa17d1560a9316f397e98511f1b988274173b60
# Parent  5bc5ed857cc6dd7a60442a52f10a35fa16c6fa89
x86: 32on64 oversight in update_va_mapping
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
 xen/arch/x86/mm.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

diff -r 5bc5ed857cc6 -r 8fa17d1560a9 xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Thu Mar 15 10:38:06 2007 +0000
+++ b/xen/arch/x86/mm.c Thu Mar 15 10:38:58 2007 +0000
@@ -2768,7 +2768,9 @@ int do_update_va_mapping(unsigned long v
             flush_tlb_one_mask(d->domain_dirty_cpumask, va);
             break;
         default:
-            if ( unlikely(get_user(vmask, (unsigned long *)bmap_ptr)) )
+            if ( unlikely(!IS_COMPAT(d) ?
+                          get_user(vmask, (unsigned long *)bmap_ptr) :
+                          get_user(vmask, (unsigned int *)bmap_ptr)) )
                 rc = -EFAULT;
             pmask = vcpumask_to_pcpumask(d, vmask);
             flush_tlb_one_mask(pmask, va);

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