KVM: x86: Silence various LAPIC-related host kernel messages
KVM-x86 dumps a lot of debug messages that have no meaning for normal
operation:
- INIT de-assertion is ignored
- SIPIs are sent and received
- APIC writes are unaligned or < 4 byte long
(Windows Server 2003 triggers this on SMP)
Degrade them to true debug messages, keeping the host kernel log clean
for real problems.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index fd00f69..6571926 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -365,16 +365,14 @@
vcpu->arch.mp_state = KVM_MP_STATE_INIT_RECEIVED;
kvm_vcpu_kick(vcpu);
} else {
- printk(KERN_DEBUG
- "Ignoring de-assert INIT to vcpu %d\n",
- vcpu->vcpu_id);
+ apic_debug("Ignoring de-assert INIT to vcpu %d\n",
+ vcpu->vcpu_id);
}
-
break;
case APIC_DM_STARTUP:
- printk(KERN_DEBUG "SIPI to vcpu %d vector 0x%02x\n",
- vcpu->vcpu_id, vector);
+ apic_debug("SIPI to vcpu %d vector 0x%02x\n",
+ vcpu->vcpu_id, vector);
if (vcpu->arch.mp_state == KVM_MP_STATE_INIT_RECEIVED) {
vcpu->arch.sipi_vector = vector;
vcpu->arch.mp_state = KVM_MP_STATE_SIPI_RECEIVED;
@@ -679,9 +677,9 @@
* Refer SDM 8.4.1
*/
if (len != 4 || alignment) {
- if (printk_ratelimit())
- printk(KERN_ERR "apic write: bad size=%d %lx\n",
- len, (long)address);
+ /* Don't shout loud, $infamous_os would cause only noise. */
+ apic_debug("apic write: bad size=%d %lx\n",
+ len, (long)address);
return;
}