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[PATCH] KVM: Add a global list of all virtual machines

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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 <avi@qumranet.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Avi Kivity 2007-02-12 00:54:44 -08:00 committed by Linus Torvalds
parent 47e627bc8c
commit 133de9021d
2 changed files with 11 additions and 1 deletions
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1
drivers/kvm/kvm.h
View file

@ -304,6 +304,7 @@ struct kvm {
int memory_config_version;
int busy;
unsigned long rmap_overflow;
struct list_head vm_list;
};
struct kvm_stat {

11
drivers/kvm/kvm_main.c
View file

@ -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;