From 133de9021d2988f3fbdad84c2d26484c7a757526 Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Mon, 12 Feb 2007 00:54:44 -0800 Subject: [PATCH] [PATCH] KVM: Add a global list of all virtual machines This will allow us to iterate over all vcpus and see which cpus they are running on. [akpm@osdl.org: use standard (ugly) initialisers] Signed-off-by: Avi Kivity Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/kvm/kvm.h | 1 + drivers/kvm/kvm_main.c | 11 ++++++++++- 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index 4ccb343b9aff..c48cebf8511d 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -304,6 +304,7 @@ struct kvm { int memory_config_version; int busy; unsigned long rmap_overflow; + struct list_head vm_list; }; struct kvm_stat { diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 9b79d3451f6f..a6cd1c1fe29a 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -41,6 +41,9 @@ MODULE_AUTHOR("Qumranet"); MODULE_LICENSE("GPL"); +static DEFINE_SPINLOCK(kvm_lock); +static LIST_HEAD(vm_list); + struct kvm_arch_ops *kvm_arch_ops; struct kvm_stat kvm_stat; EXPORT_SYMBOL_GPL(kvm_stat); @@ -230,9 +233,13 @@ static int kvm_dev_open(struct inode *inode, struct file *filp) struct kvm_vcpu *vcpu = &kvm->vcpus[i]; mutex_init(&vcpu->mutex); + vcpu->cpu = -1; vcpu->kvm = kvm; vcpu->mmu.root_hpa = INVALID_PAGE; INIT_LIST_HEAD(&vcpu->free_pages); + spin_lock(&kvm_lock); + list_add(&kvm->vm_list, &vm_list); + spin_unlock(&kvm_lock); } filp->private_data = kvm; return 0; @@ -292,6 +299,9 @@ static int kvm_dev_release(struct inode *inode, struct file *filp) { struct kvm *kvm = filp->private_data; + spin_lock(&kvm_lock); + list_del(&kvm->vm_list); + spin_unlock(&kvm_lock); kvm_free_vcpus(kvm); kvm_free_physmem(kvm); kfree(kvm); @@ -546,7 +556,6 @@ static int kvm_dev_ioctl_create_vcpu(struct kvm *kvm, int n) FX_IMAGE_ALIGN); vcpu->guest_fx_image = vcpu->host_fx_image + FX_IMAGE_SIZE; - vcpu->cpu = -1; /* First load will set up TR */ r = kvm_arch_ops->vcpu_create(vcpu); if (r < 0) goto out_free_vcpus; -- 2.20.1