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[Xen-changelog] [xen-unstable] x86 shadow: Fix cross-page write emulatio
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| Subject: | [Xen-changelog] [xen-unstable] x86 shadow: Fix cross-page write emulation failure. |
| From: | Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx> |
| Date: | Fri, 01 Feb 2008 08:00:29 -0800 |
| Delivery-date: | Fri, 01 Feb 2008 08:01:34 -0800 |
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1201864887 0
# Node ID 3787e70b2ab219de50dff7417917fd9f9ccfcc35
# Parent 396ab902b02daf14deed0f3261c1c179b7378b4d
x86 shadow: Fix cross-page write emulation failure.
Signed-off-by: Disheng Su <disheng.su@xxxxxxxxx>
---
xen/arch/x86/mm/shadow/multi.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -r 396ab902b02d -r 3787e70b2ab2 xen/arch/x86/mm/shadow/multi.c
--- a/xen/arch/x86/mm/shadow/multi.c Fri Feb 01 11:18:15 2008 +0000
+++ b/xen/arch/x86/mm/shadow/multi.c Fri Feb 01 11:21:27 2008 +0000
@@ -4076,7 +4076,7 @@ static void *emulate_map_dest(struct vcp
sh_ctxt->mfn2 = emulate_gva_to_mfn(v, (vaddr + bytes - 1) & PAGE_MASK,
sh_ctxt);
if ( !mfn_valid(sh_ctxt->mfn2) )
- return ((mfn_x(sh_ctxt->mfn1) == BAD_GVA_TO_GFN) ?
+ return ((mfn_x(sh_ctxt->mfn2) == BAD_GVA_TO_GFN) ?
MAPPING_EXCEPTION : MAPPING_UNHANDLEABLE);
/* Cross-page writes mean probably not a pagetable */
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