From: George Dunlap <gdunlap@xensource.com>
Date: Wed, 19 Sep 2007 10:42:05 +0000 (+0100)
Subject: [SHADOW] Use fast-unshadow for early_unshadow heuristic.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14937^2~67
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=c8822fb01990bf7f48c02d9cc159ea40655c7d16;p=xen.git

[SHADOW] Use fast-unshadow for early_unshadow heuristic.
---

diff --git a/xen/arch/x86/mm/shadow/multi.c b/xen/arch/x86/mm/shadow/multi.c
index 82c54c5207..a68c1e06e0 100644
--- a/xen/arch/x86/mm/shadow/multi.c
+++ b/xen/arch/x86/mm/shadow/multi.c
@@ -2551,7 +2551,7 @@ static inline void check_for_early_unshadow(struct vcpu *v, mfn_t gmfn)
         if ( !(flags & (SHF_L2_32|SHF_L2_PAE|SHF_L2H_PAE|SHF_L4_64)) )
         {
             perfc_incr(shadow_early_unshadow);
-            sh_remove_shadows(v, gmfn, 0, 0 /* Slow, can fail to unshadow */ );
+            sh_remove_shadows(v, gmfn, 1, 0 /* Fast, can fail to unshadow */ );
         } 
     }
     v->arch.paging.shadow.last_emulated_mfn = mfn_x(gmfn);