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[Xen-devel] [PATCH] Add new location of Linux direct-map to the places t
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| Subject: | [Xen-devel] [PATCH] Add new location of Linux direct-map to the places to look for writable mappings |
| From: | "George Dunlap" <George.Dunlap@xxxxxxxxxxxxx> |
| Date: | Fri, 12 Sep 2008 16:38:48 +0100 |
| Delivery-date: | Fri, 12 Sep 2008 08:39:21 -0700 |
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Add new location of Linux direct-map to the places to look for
writable mappings.
Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
diff -r dbac9ee4d761 xen/arch/x86/mm/shadow/common.c
--- a/xen/arch/x86/mm/shadow/common.c Mon Sep 08 16:02:13 2008 +0100
+++ b/xen/arch/x86/mm/shadow/common.c Fri Sep 12 16:42:32 2008 +0100
@@ -2385,9 +2385,11 @@ int sh_remove_write_access(struct vcpu *
+ ((fault_addr & VADDR_MASK) >> 27), 3); break;
}
- /* 64bit Linux direct map at 0xffff810000000000; older kernels
- * had it at 0x0000010000000000UL */
+ /* 64bit Linux direct map at 0xffff880000000000; older kernels
+ * had it at 0xffff880000000000, and older kernels yet had it
+ * at 0x0000010000000000UL */
gfn = mfn_to_gfn(v->domain, gmfn);
+ GUESS(0xffff880000000000UL + (gfn << PAGE_SHIFT), 4);
GUESS(0xffff810000000000UL + (gfn << PAGE_SHIFT), 4);
GUESS(0x0000010000000000UL + (gfn << PAGE_SHIFT), 4);
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