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[Xen-devel] [PATCH] shadow: fix audit mode.

from [Gianluca Guida]

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Subject:	[Xen-devel] [PATCH] shadow: fix audit mode.
From:	Gianluca Guida <gianluca.guida@xxxxxxxxxxxxx>
Date:	Tue, 28 Apr 2009 15:46:53 +0100
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Splintered L1s can have the dirty bit clean because of vram tracking.

Signed-off-by: Gianluca Guida <gianluca.guida@xxxxxxxxxxxxx>

diff -r 9fdcd3ab84b7 xen/arch/x86/mm/shadow/multi.c
--- a/xen/arch/x86/mm/shadow/multi.c    Mon Apr 27 15:40:09 2009 +0100
+++ b/xen/arch/x86/mm/shadow/multi.c    Tue Apr 28 15:45:21 2009 +0100
@@ -4987,6 +4987,9 @@ int sh_audit_fl1_table(struct vcpu *v, m
         f &= ~(_PAGE_AVAIL0|_PAGE_AVAIL1|_PAGE_AVAIL2);
         if ( !(f == 0 
                || f == (_PAGE_PRESENT|_PAGE_USER|_PAGE_RW|
+                        _PAGE_ACCESSED) 
+               || f == (_PAGE_PRESENT|_PAGE_USER|_PAGE_ACCESSED)
+               || f == (_PAGE_PRESENT|_PAGE_USER|_PAGE_RW|
                         _PAGE_ACCESSED|_PAGE_DIRTY) 
                || f == (_PAGE_PRESENT|_PAGE_USER|_PAGE_ACCESSED|_PAGE_DIRTY)
                || sh_l1e_is_magic(*sl1e)) )

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