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| author | Avi Kivity <avi@qumranet.com> | 2007-06-07 19:11:53 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-07-16 12:05:46 +0300 |
| commit | 39c3b86e5c193e09f69f0e99c93600a4999ffc60 (patch) | |
| tree | 94272c98789224f53d4f4f19587a08d95103f837 /drivers/kvm | |
| parent | 72d6e5a08a8ba2105b3f36e32285e8fbfbed1f71 (diff) | |
| download | linux-39c3b86e5c193e09f69f0e99c93600a4999ffc60.tar.gz linux-39c3b86e5c193e09f69f0e99c93600a4999ffc60.tar.bz2 linux-39c3b86e5c193e09f69f0e99c93600a4999ffc60.zip | |
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>
Diffstat (limited to 'drivers/kvm')
| -rw-r--r-- | drivers/kvm/kvm.h | 1 | ||||
| -rw-r--r-- | drivers/kvm/kvm_main.c | 5 |
2 files changed, 6 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; diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 556416962541..4e1a017f3db7 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -2391,6 +2391,11 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, int n) if (r < 0) goto out_free_vcpus; + spin_lock(&kvm_lock); + if (n >= kvm->nvcpus) + kvm->nvcpus = n + 1; + spin_unlock(&kvm_lock); + return r; out_free_vcpus: |