Commit b6bed093 authored Aug 08, 2013 by Martin Schwidefsky

s390/time: clock comparator revalidation



Always use the S390_lowcore.clock_comparator field to revalidate
the clock comparator CPU register after a machine check. This avoids
an unnecssary external interrupt after a machine check if no timer
is pending.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

parent 363fd4c1

arch/s390/kernel/nmi.c

+1 −4

Original line number	Diff line number	Diff line
		@@ -214,9 +214,6 @@ static int notrace s390_revalidate_registers(struct mci *mci)
		: "0", "cc");
		#endif
		/* Revalidate clock comparator register */
		if (S390_lowcore.clock_comparator == -1)
		set_clock_comparator(S390_lowcore.mcck_clock);
		else
		set_clock_comparator(S390_lowcore.clock_comparator);
		/* Check if old PSW is valid */
		if (!mci->wp)