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Diffstat (limited to 'virt/kvm/kvm_main.c')
-rw-r--r--virt/kvm/kvm_main.c46
1 files changed, 16 insertions, 30 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 82987d457b8b..15252d723b54 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -717,10 +717,9 @@ out_err_no_srcu:
hardware_disable_all();
out_err_no_disable:
for (i = 0; i < KVM_NR_BUSES; i++)
- kfree(rcu_access_pointer(kvm->buses[i]));
+ kfree(kvm_get_bus(kvm, i));
for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++)
- kvm_free_memslots(kvm,
- rcu_dereference_protected(kvm->memslots[i], 1));
+ kvm_free_memslots(kvm, __kvm_memslots(kvm, i));
kvm_arch_free_vm(kvm);
mmdrop(current->mm);
return ERR_PTR(r);
@@ -754,9 +753,8 @@ static void kvm_destroy_vm(struct kvm *kvm)
spin_unlock(&kvm_lock);
kvm_free_irq_routing(kvm);
for (i = 0; i < KVM_NR_BUSES; i++) {
- struct kvm_io_bus *bus;
+ struct kvm_io_bus *bus = kvm_get_bus(kvm, i);
- bus = rcu_dereference_protected(kvm->buses[i], 1);
if (bus)
kvm_io_bus_destroy(bus);
kvm->buses[i] = NULL;
@@ -770,8 +768,7 @@ static void kvm_destroy_vm(struct kvm *kvm)
kvm_arch_destroy_vm(kvm);
kvm_destroy_devices(kvm);
for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++)
- kvm_free_memslots(kvm,
- rcu_dereference_protected(kvm->memslots[i], 1));
+ kvm_free_memslots(kvm, __kvm_memslots(kvm, i));
cleanup_srcu_struct(&kvm->irq_srcu);
cleanup_srcu_struct(&kvm->srcu);
kvm_arch_free_vm(kvm);
@@ -3883,7 +3880,6 @@ static const struct file_operations *stat_fops[] = {
static void kvm_uevent_notify_change(unsigned int type, struct kvm *kvm)
{
struct kobj_uevent_env *env;
- char *tmp, *pathbuf = NULL;
unsigned long long created, active;
if (!kvm_dev.this_device || !kvm)
@@ -3907,38 +3903,28 @@ static void kvm_uevent_notify_change(unsigned int type, struct kvm *kvm)
add_uevent_var(env, "CREATED=%llu", created);
add_uevent_var(env, "COUNT=%llu", active);
- if (type == KVM_EVENT_CREATE_VM)
+ if (type == KVM_EVENT_CREATE_VM) {
add_uevent_var(env, "EVENT=create");
- else if (type == KVM_EVENT_DESTROY_VM)
+ kvm->userspace_pid = task_pid_nr(current);
+ } else if (type == KVM_EVENT_DESTROY_VM) {
add_uevent_var(env, "EVENT=destroy");
+ }
+ add_uevent_var(env, "PID=%d", kvm->userspace_pid);
if (kvm->debugfs_dentry) {
- char p[ITOA_MAX_LEN];
-
- snprintf(p, sizeof(p), "%s", kvm->debugfs_dentry->d_name.name);
- tmp = strchrnul(p + 1, '-');
- *tmp = '\0';
- add_uevent_var(env, "PID=%s", p);
- pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
- if (pathbuf) {
- /* sizeof counts the final '\0' */
- int len = sizeof("STATS_PATH=") - 1;
- const char *pvar = "STATS_PATH=";
-
- tmp = dentry_path_raw(kvm->debugfs_dentry,
- pathbuf + len,
- PATH_MAX - len);
- if (!IS_ERR(tmp)) {
- memcpy(tmp - len, pvar, len);
- env->envp[env->envp_idx++] = tmp - len;
- }
+ char *tmp, *p = kmalloc(PATH_MAX, GFP_KERNEL);
+
+ if (p) {
+ tmp = dentry_path_raw(kvm->debugfs_dentry, p, PATH_MAX);
+ if (!IS_ERR(tmp))
+ add_uevent_var(env, "STATS_PATH=%s", tmp);
+ kfree(p);
}
}
/* no need for checks, since we are adding at most only 5 keys */
env->envp[env->envp_idx++] = NULL;
kobject_uevent_env(&kvm_dev.this_device->kobj, KOBJ_CHANGE, env->envp);
kfree(env);
- kfree(pathbuf);
}
static int kvm_init_debug(void)