diff options
| author | Izik Eidus <ieidus@redhat.com> | 2009-09-18 20:08:01 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-10-05 08:27:53 -0700 |
| commit | 0af8b3ad950ea4687cfee0cc5e7af9d941fd02ff (patch) | |
| tree | 2ebf0888cf2a068bc1a0da989e2eff7ef0b49d77 | |
| parent | e38c35b0881a7706b3cbedd7cfe5165fb0371442 (diff) | |
KVM: MMU: make __kvm_mmu_free_some_pages handle empty list
(cherry picked from commit 3b80fffe2b31fb716d3ebe729c54464ee7856723)
First check if the list is empty before attempting to look at list
entries.
Signed-off-by: Izik Eidus <ieidus@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | arch/x86/kvm/mmu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index d7ce26babbbe..a1c5e34e15fd 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2612,7 +2612,8 @@ EXPORT_SYMBOL_GPL(kvm_mmu_unprotect_page_virt); void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu) { - while (vcpu->kvm->arch.n_free_mmu_pages < KVM_REFILL_PAGES) { + while (vcpu->kvm->arch.n_free_mmu_pages < KVM_REFILL_PAGES && + !list_empty(&vcpu->kvm->arch.active_mmu_pages)) { struct kvm_mmu_page *sp; sp = container_of(vcpu->kvm->arch.active_mmu_pages.prev, |