Commit f3e1a273 authored Jan 05, 2011 by Heiko Carstens Committed by Martin Schwidefsky Jan 05, 2011

[S390] nmi: enable machine checks early



Until now machine checks for the swapper process of the IPL cpu are just
implicitly (and more or less accidently) enabled when the first time the
idle process goes into idle state and loads an enabled wait psw.
Before that machine checks are disabled.
So let's enable them explicitly in trap_init() so we have a well defined
time when machine checks are enabled.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent aa3a41d0

arch/s390/kernel/traps.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -733,4 +733,6 @@ void __init trap_init(void)
		pgm_check_table[0x15] = &operand_exception;
		pgm_check_table[0x1C] = &space_switch_exception;
		pgm_check_table[0x1D] = &hfp_sqrt_exception;
		/* Enable machine checks early. */
		local_mcck_enable();
		}

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