From: Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org, Marcelo Tosatti <mtosatti@redhat.com>
Subject: [patch 01/13] KVM: MMU: flush remote TLBs on large->normal entry overwrite
Date: Mon, 22 Sep 2008 16:16:28 -0300 [thread overview]
Message-ID: <20080922192214.850051855@localhost.localdomain> (raw)
In-Reply-To: 20080922191627.671519725@localhost.localdomain
[-- Attachment #1: flush-tlb-on-lpage-overwrite --]
[-- Type: text/plain, Size: 775 bytes --]
It is necessary to flush all TLB's when a large spte entry is
overwritten with a normal page directory pointer.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Index: kvm/arch/x86/kvm/paging_tmpl.h
===================================================================
--- kvm.orig/arch/x86/kvm/paging_tmpl.h
+++ kvm/arch/x86/kvm/paging_tmpl.h
@@ -310,8 +310,11 @@ static int FNAME(shadow_walk_entry)(stru
if (is_shadow_present_pte(*sptep) && !is_large_pte(*sptep))
return 0;
- if (is_large_pte(*sptep))
+ if (is_large_pte(*sptep)) {
+ set_shadow_pte(sptep, shadow_trap_nonpresent_pte);
+ kvm_flush_remote_tlbs(vcpu->kvm);
rmap_remove(vcpu->kvm, sptep);
+ }
if (level == PT_DIRECTORY_LEVEL && gw->level == PT_DIRECTORY_LEVEL) {
metaphysical = 1;
--
next prev parent reply other threads:[~2008-09-22 19:26 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-22 19:16 [patch 00/13] out of sync shadow v3 Marcelo Tosatti
2008-09-22 19:16 ` Marcelo Tosatti [this message]
2008-09-22 19:16 ` [patch 02/13] KVM: MMU: split mmu_set_spte Marcelo Tosatti
2008-09-22 19:16 ` [patch 03/13] KVM: MMU: move local TLB flush to mmu_set_spte Marcelo Tosatti
2008-09-22 19:16 ` [patch 04/13] KVM: MMU: do not write-protect large mappings Marcelo Tosatti
2008-09-22 19:16 ` [patch 05/13] KVM: MMU: mode specific sync_page Marcelo Tosatti
2008-09-22 19:16 ` [patch 06/13] KVM: MMU: sync roots on mmu reload Marcelo Tosatti
2008-09-22 19:16 ` [patch 07/13] KVM: x86: trap invlpg Marcelo Tosatti
2008-09-22 19:16 ` [patch 08/13] KVM: MMU: mmu_parent_walk Marcelo Tosatti
2008-09-22 19:16 ` [patch 09/13] KVM: MMU: awareness of new kvm_mmu_zap_page behaviour Marcelo Tosatti
2008-09-22 19:16 ` [patch 10/13] KVM: MMU: mmu_convert_notrap helper Marcelo Tosatti
2008-09-22 19:16 ` [patch 11/13] KVM: MMU: out of sync shadow core v2 Marcelo Tosatti
2008-09-22 19:16 ` [patch 12/13] KVM: MMU: speed up mmu_unsync_walk Marcelo Tosatti
2008-09-22 19:16 ` [patch 13/13] KVM: MMU: add "oos_shadow" parameter to disable oos Marcelo Tosatti
2008-10-14 18:37 ` [patch 00/13] out of sync shadow v3 Alex Williamson
2008-10-14 22:08 ` Alex Williamson
2008-10-15 2:37 ` Marcelo Tosatti
2008-10-15 3:56 ` Alex Williamson
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