KVM: silence lapic kernel messages that can be triggered by a guest

Some Linux versions (f8) try to read EOI register that is write only.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 5d69760..66122bf 100644 (file)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -597,14 +597,14 @@ static int apic_reg_read(struct kvm_lapic *apic, u32 offset, int len,
        static const u64 rmask = 0x43ff01ffffffe70cULL;
 
        if ((alignment + len) > 4) {
-               printk(KERN_ERR "KVM_APIC_READ: alignment error %x %d\n",
-                               offset, len);
+               apic_debug("KVM_APIC_READ: alignment error %x %d\n",
+                          offset, len);
                return 1;
        }
 
        if (offset > 0x3f0 || !(rmask & (1ULL << (offset >> 4)))) {
-               printk(KERN_ERR "KVM_APIC_READ: read reserved register %x\n",
-                               offset);
+               apic_debug("KVM_APIC_READ: read reserved register %x\n",
+                          offset);
                return 1;
        }