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KVM: MMU: add "oos_shadow" parameter to disable oos
author
Marcelo Tosatti
<mtosatti@redhat.com>
Tue, 23 Sep 2008 16:18:41 +0000
(13:18 -0300)
committer
Avi Kivity
<avi@redhat.com>
Wed, 15 Oct 2008 12:25:27 +0000
(14:25 +0200)
Subject says it all.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/x86/kvm/mmu.c
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diff --git
a/arch/x86/kvm/mmu.c
b/arch/x86/kvm/mmu.c
index cb391d629af2a0bf23f2b207b3f6e99648107eb4..99c239c5c0ac7becff901a5bbdd399af4ec48293 100644
(file)
--- a/
arch/x86/kvm/mmu.c
+++ b/
arch/x86/kvm/mmu.c
@@
-70,6
+70,9
@@
static int dbg = 0;
module_param(dbg, bool, 0644);
#endif
+static int oos_shadow = 1;
+module_param(oos_shadow, bool, 0644);
+
#ifndef MMU_DEBUG
#define ASSERT(x) do { } while (0)
#else
@@
-1424,7
+1427,7
@@
static int mmu_need_write_protect(struct kvm_vcpu *vcpu, gfn_t gfn,
return 1;
if (shadow->unsync)
return 0;
- if (can_unsync)
+ if (can_unsync
&& oos_shadow
)
return kvm_unsync_page(vcpu, shadow);
return 1;
}