From: Avi Kivity <avi@qumranet.com>
To: kvm-devel@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org, akpm@osdl.org, mingo@elte.hu
Subject: [PATCH 3/9] KVM: Avoid oom on cr3 switch
Date: Fri, 05 Jan 2007 07:52:45 -0000 [thread overview]
Message-ID: <20070105075245.49930250048@il.qumranet.com> (raw)
In-Reply-To: <459E02E7.5020407@qumranet.com>
From: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Index: linux-2.6/drivers/kvm/mmu.c
===================================================================
--- linux-2.6.orig/drivers/kvm/mmu.c
+++ linux-2.6/drivers/kvm/mmu.c
@@ -905,6 +905,8 @@ static void paging_new_cr3(struct kvm_vc
{
pgprintk("%s: cr3 %lx\n", __FUNCTION__, vcpu->cr3);
mmu_free_roots(vcpu);
+ if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
+ kvm_mmu_free_some_pages(vcpu);
mmu_alloc_roots(vcpu);
kvm_mmu_flush_tlb(vcpu);
kvm_arch_ops->set_cr3(vcpu, vcpu->mmu.root_hpa);
next prev parent reply other threads:[~2007-01-05 7:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-05 7:48 [PATCH 0/9] KVM: Flush out my patch queue Avi Kivity
2007-01-05 7:50 ` [PATCH 1/9] KVM: Improve reporting of vmwrite errors Avi Kivity
2007-01-05 7:51 ` [PATCH 2/9] KVM: Initialize vcpu->kvm a little earlier Avi Kivity
2007-01-05 7:52 ` Avi Kivity [this message]
2007-01-05 7:53 ` [PATCH 4/9] KVM: Add missing 'break' Avi Kivity
2007-01-05 7:54 ` [PATCH 5/9] KVM: Don't set guest cr3 from vmx_vcpu_setup() Avi Kivity
2007-01-05 7:55 ` [PATCH 6/9] KVM: MMU: Add missing dirty bit Avi Kivity
2007-01-05 7:56 ` [PATCH 7/9] KVM: Make loading cr3 more robust Avi Kivity
2007-01-05 7:57 ` [PATCH 8/9] KVM: Simplify mmu_alloc_roots() Avi Kivity
2007-01-05 7:58 ` [PATCH 9/9] KVM: Simplify test for interrupt window Avi Kivity
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