[PATCH RFC 12/13] mca: disable cmc enable on Xen PV

Xen PV guests doesn't have a lapic, so disable the lapic call in mca
initialization.
---
 sys/x86/x86/mca.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/sys/x86/x86/mca.c b/sys/x86/x86/mca.c
index f1369cd..e9d2c1d 100644
--- a/sys/x86/x86/mca.c
+++ b/sys/x86/x86/mca.c
_at__at_ -897,7 +897,7 _at__at_ _mca_init(int boot)
 		}
 
 #ifdef DEV_APIC
-		if (PCPU_GET(cmci_mask) != 0 && boot)
+		if (PCPU_GET(cmci_mask) != 0 && boot && !lapic_disabled)
 			lapic_enable_cmc();
 #endif
 	}
-- 
1.7.7.5 (Apple Git-26)