1 files changed, 26 insertions, 0 deletions

diff --git a/arch/ia64/kvm/vmm.c b/arch/ia64/kvm/vmm.c
index 2275bf4e681a..957779593c2f 100644
--- a/arch/ia64/kvm/vmm.c
+++ b/arch/ia64/kvm/vmm.c
@@ -62,5 +62,31 @@ void vmm_spin_unlock(spinlock_t *lock)
 {
         _vmm_raw_spin_unlock(lock);
 }
+
+static void vcpu_debug_exit(struct kvm_vcpu *vcpu)
+{
+        struct exit_ctl_data *p = &vcpu->arch.exit_data;
+        long psr;
+
+        local_irq_save(psr);
+        p->exit_reason = EXIT_REASON_DEBUG;
+        vmm_transition(vcpu);
+        local_irq_restore(psr);
+}
+
+asmlinkage int printk(const char *fmt, ...)
+{
+        struct kvm_vcpu *vcpu = current_vcpu;
+        va_list args;
+        int r;
+
+        memset(vcpu->arch.log_buf, 0, VMM_LOG_LEN);
+        va_start(args, fmt);
+        r = vsnprintf(vcpu->arch.log_buf, VMM_LOG_LEN, fmt, args);
+        va_end(args);
+        vcpu_debug_exit(vcpu);
+        return r;
+}
+
 module_init(kvm_vmm_init)
 module_exit(kvm_vmm_exit)