Commit b733bfb5 authored by Avi Kivity's avatar Avi Kivity
Browse files

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: default avatarAvi Kivity <avi@qumranet.com>
parent 3067714c

drivers/kvm/mmu.c

+4 −0
Original line number Diff line number Diff line
@@ -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);