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KVM: MMU: add "oos_shadow" parameter to disable oos 

Subject says it all.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2008-09-23 13:18:41 -03:00 committed by Avi Kivity
parent 0074ff63eb
commit 582801a95d
1 changed files with 4 additions and 1 deletions
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5
arch/x86/kvm/mmu.c
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@ -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;
}