KVM: Keep an upper bound of initialized vcpus

That way, we don't need to loop for KVM_MAX_VCPUS for a single vcpu
vm.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index d49b16cae27a..528a56b1790e 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -379,6 +379,7 @@ struct kvm {
         struct list_head active_mmu_pages;
         int n_free_mmu_pages;
         struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
+        int nvcpus;
         struct kvm_vcpu vcpus[KVM_MAX_VCPUS];
         int memory_config_version;
         int busy;