From b733bfb524af69612f85c36a511f0109c5e3fe8d Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Sun, 28 Oct 2007 18:52:05 +0200 Subject: [PATCH] KVM: MMU: Topup the mmu memory preallocation caches before emulating an insn Emulation may cause a shadow pte to be instantiated, which requires memory resources. Make sure the caches are filled to avoid an oops. Signed-off-by: Avi Kivity --- drivers/kvm/mmu.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index ace3cb86214..9be54a5e858 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -1362,6 +1362,10 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u32 error_code) goto out; } + r = mmu_topup_memory_caches(vcpu); + if (r) + goto out; + er = emulate_instruction(vcpu, vcpu->run, cr2, error_code, 0); mutex_unlock(&vcpu->kvm->lock); -- 2.20.1