redonkable/alistair23-linux
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[PATCH] KVM: Avoid oom on cr3 switch

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Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2007-01-05 16:36:57 -08:00 committed by Linus Torvalds
parent 86a2b42e81
commit 7f7417d67e
1 changed files with 2 additions and 0 deletions
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2
drivers/kvm/mmu.c
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@ -905,6 +905,8 @@ static void paging_new_cr3(struct kvm_vcpu *vcpu)
{ {
pgprintk("%s: cr3 %lx\n", __FUNCTION__, vcpu->cr3); pgprintk("%s: cr3 %lx\n", __FUNCTION__, vcpu->cr3);
mmu_free_roots(vcpu); 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); mmu_alloc_roots(vcpu);
kvm_mmu_flush_tlb(vcpu); kvm_mmu_flush_tlb(vcpu);
kvm_arch_ops->set_cr3(vcpu, vcpu->mmu.root_hpa); kvm_arch_ops->set_cr3(vcpu, vcpu->mmu.root_hpa);