From: Marcelo Tosatti <mtosatti@redhat.com>
To: kvm@vger.kernel.org
Cc: avi@redhat.com, Marcelo Tosatti <mtosatti@redhat.com>
Subject: [patch 1/2] KVM: MMU: disable global page optimization
Date: Sun, 05 Apr 2009 14:54:46 -0300 [thread overview]
Message-ID: <20090405175459.947389522@localhost.localdomain> (raw)
In-Reply-To: 20090405175445.045353301@localhost.localdomain
[-- Attachment #1: disable-global-page-optimization --]
[-- Type: text/plain, Size: 662 bytes --]
Complexity to fix it not worthwhile the gains, as discussed
in http://article.gmane.org/gmane.comp.emulators.kvm.devel/28649.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Index: kvm/arch/x86/kvm/mmu.c
===================================================================
--- kvm.orig/arch/x86/kvm/mmu.c
+++ kvm/arch/x86/kvm/mmu.c
@@ -1254,7 +1254,7 @@ static struct kvm_mmu_page *kvm_mmu_get_
pgprintk("%s: adding gfn %lx role %x\n", __func__, gfn, role.word);
sp->gfn = gfn;
sp->role = role;
- sp->global = role.cr4_pge;
+ sp->global = 0;
hlist_add_head(&sp->hash_link, bucket);
if (!direct) {
if (rmap_write_protect(vcpu->kvm, gfn))
--
next prev parent reply other threads:[~2009-04-05 17:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-05 17:54 [patch 0/2] disable unsync global page optimization Marcelo Tosatti
2009-04-05 17:54 ` Marcelo Tosatti [this message]
2009-04-05 17:54 ` [patch 2/2] KVM: MMU: remove global page optimization logic Marcelo Tosatti
2009-04-09 16:16 ` [patch 0/2] disable unsync global page optimization Avi Kivity
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