[patch 09/58] KVM: MMU: disable global page optimization

Greg KH
2009-05-06T21:57:44Z

[-- Attachment #1: kvm-mmu-disable-global-page-optimization.patch --]
[-- Type: text/plain, Size: 986 bytes --]

2.6.29-stable review patch. If anyone has any objections, please let us know.

------------------

From: Marcelo Tosatti <mtosatti@redhat.com>

upstream commit: bf47a760f66add7870fba33ab50f58b550d6bbd1

Complexity to fix it not worthwhile the gains, as discussed
in http://article.gmane.org/gmane.comp.emulators.kvm.devel/28649.

Cc: stable@kernel.org
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
[mtosatti: backport to 2.6.29]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>

---
arch/x86/kvm/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -797,7 +797,7 @@ static struct kvm_mmu_page *kvm_mmu_allo
ASSERT(is_empty_shadow_page(sp->spt));
bitmap_zero(sp->slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
sp->multimapped = 0;
- sp->global = 1;
+ sp->global = 0;
sp->parent_pte = parent_pte;
--vcpu->kvm->arch.n_free_mmu_pages;
return sp;