[RFC,09/19] kvm: Hook in kvmi on VM on/off events

Commit Message

Adalbert Lazăr June 16, 2017, 1:43 p.m. UTC

From: Mihai Dontu <[e-mail]>

Notify the guest introspection tool when a VM is created
(KVMI_EVENT_GUEST_ON) or destroyed (KVMI_EVENT_GUEST_OFF).

Signed-off-by: Mihai Dontu <[e-mail]>
---
 virt/kvm/kvm_main.c | 3 +++
 1 file changed, 3 insertions(+)

Patch

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c819b6b0a36e..179b688a8aef 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -784,6 +784,7 @@  static int kvm_vm_release(struct inode *inode, struct file *filp)
 {
 	struct kvm *kvm = filp->private_data;
 
+	kvmi_vm_powered_off(kvm);
 	kvm_irqfd_release(kvm);
 
 	kvm_put_kvm(kvm);
@@ -2574,6 +2575,8 @@  static long kvm_vcpu_ioctl(struct file *filp,
 				synchronize_rcu();
 			put_pid(oldpid);
 		}
+		if (!test_and_set_bit(0, &vcpu->kvm->introduced))
+			kvmi_vm_powered_on(vcpu->kvm);
 		r = kvm_arch_vcpu_ioctl_run(vcpu, vcpu->run);
 		trace_kvm_userspace_exit(vcpu->run->exit_reason, r);
 		break;