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authorAvi Kivity <avi@qumranet.com>2007-02-12 00:54:44 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 09:48:40 -0800
commit133de9021d2988f3fbdad84c2d26484c7a757526 (patch)
treedc56020026f28b91d2304aa355c8b6cf859a7223 /drivers
parent[PATCH] hotplug: Allow modules to use the cpu hotplug notifiers even if !CONFIG_HOTPLUG_CPU (diff)
downloadlinux-dev-133de9021d2988f3fbdad84c2d26484c7a757526.tar.xz
linux-dev-133de9021d2988f3fbdad84c2d26484c7a757526.zip
[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 <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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/kvm/kvm.h1
-rw-r--r--drivers/kvm/kvm_main.c11
2 files changed, 11 insertions, 1 deletions
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;