KVM: Add and use pr_unimpl for standard formatting of unimplemented features

All guest-invokable printks should be ratelimited to prevent malicious
guests from flooding logs.  This is a start.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 7beaff1789b1..3ec30d7c9b93 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -1167,7 +1167,7 @@ static int invalid_op_interception(struct vcpu_svm *svm,
 static int task_switch_interception(struct vcpu_svm *svm,
                                     struct kvm_run *kvm_run)
 {
-        printk(KERN_DEBUG "%s: task swiche is unsupported\n", __FUNCTION__);
+        pr_unimpl(&svm->vcpu, "%s: task switch is unsupported\n", __FUNCTION__);
         kvm_run->exit_reason = KVM_EXIT_UNKNOWN;
         return 0;
 }
@@ -1183,7 +1183,7 @@ static int emulate_on_interception(struct vcpu_svm *svm,
                                    struct kvm_run *kvm_run)
 {
         if (emulate_instruction(&svm->vcpu, NULL, 0, 0) != EMULATE_DONE)
-                printk(KERN_ERR "%s: failed\n", __FUNCTION__);
+                pr_unimpl(&svm->vcpu, "%s: failed\n", __FUNCTION__);
         return 1;
 }