Make machine check exception logging more readable. On newer Intel systems,

an uncorrected ECC error tends to fire on all CPUs in a package
simultaneously and the current printf hacks are not sufficient to make
the messages legible.  Instead, use the existing mca_lock spinlock to
serialize calls to mca_log() and change the machine check code to panic
directly when an unrecoverable error is encoutered rather than falling
back to a trap_fatal() call in trap() (which adds nearly a screen-full of
logging messages that aren't useful for machine checks).

MFC after:	2 weeks

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/x86/include/mca.h b/sys/x86/include/mca.h
index 9322737..29728b9 100644
--- a/sys/x86/include/mca.h
+++ b/sys/x86/include/mca.h
@@ -48,7 +48,7 @@ struct mca_record {
 
 void	cmc_intr(void);
 void	mca_init(void);
-int	mca_intr(void);
+void	mca_intr(void);
 void	mca_resume(void);
 
 #endif