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Commit 39c3b86e authored by Avi Kivity's avatar Avi Kivity
Browse files

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: default avatarAvi Kivity <avi@qumranet.com>
parent 72d6e5a0

drivers/kvm/kvm.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -379,6 +379,7 @@ struct kvm { 
	struct list_head active_mmu_pages;

	struct list_head active_mmu_pages;

	int n_free_mmu_pages;

	int n_free_mmu_pages;

	struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];

	struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];

	int nvcpus;

	struct kvm_vcpu vcpus[KVM_MAX_VCPUS];

	struct kvm_vcpu vcpus[KVM_MAX_VCPUS];

	int memory_config_version;

	int memory_config_version;

	int busy;

	int busy;

drivers/kvm/kvm_main.c

+5 −0
Original line number Original line Diff line number Diff line
@@ -2391,6 +2391,11 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, int n) 
	if (r < 0)

	if (r < 0)

		goto out_free_vcpus;

		goto out_free_vcpus;





	spin_lock(&kvm_lock);

	if (n >= kvm->nvcpus)

		kvm->nvcpus = n + 1;

	spin_unlock(&kvm_lock);



	return r;

	return r;





out_free_vcpus:

out_free_vcpus: