Commit 7277b421 authored by Alexander Gordeev's avatar Alexander Gordeev Committed by Vasily Gorbik
Browse files

s390/smp: use physical address for SIGP_SET_PREFIX command 



Signal processor SIGP_SET_PREFIX command expects physical
address of the lowcore to be installed, but instead the
virtual address is provided.

Note: this does not fix a bug currently, since virtual and
physical addresses are identical.

Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 4f45c37f

arch/s390/kernel/smp.c

+1 −1
Original line number Diff line number Diff line
@@ -213,7 +213,7 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu) 
	if (nmi_alloc_mcesa(&lc->mcesad))

		goto out;

	lowcore_ptr[cpu] = lc;

	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, (u32)(unsigned long) lc);

	pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, __pa(lc));

	return 0;



out: