Commit 2facd5d3 authored by Alexander Gordeev's avatar Alexander Gordeev
Browse files

s390/ipl: fix IPIB virtual vs physical address confusion 



The pointer to IPL Parameter Information Block is stored
in the absolute lowcore for later use by dump tools. That
pointer is a virtual address, though it should be physical
instead.

Note, this does not fix a real issue, since virtual and
physical addresses are currently the same.

Suggested-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
parent a33239be

arch/s390/kernel/ipl.c

+1 −2
Original line number Diff line number Diff line
@@ -1935,14 +1935,13 @@ static struct shutdown_action __refdata dump_action = { 


static void dump_reipl_run(struct shutdown_trigger *trigger)

{

	unsigned long ipib = (unsigned long) reipl_block_actual;

	struct lowcore *abs_lc;

	unsigned int csum;



	csum = (__force unsigned int)

	       csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);

	abs_lc = get_abs_lowcore();

	abs_lc->ipib = ipib;

	abs_lc->ipib = __pa(reipl_block_actual);

	abs_lc->ipib_checksum = csum;

	put_abs_lowcore(abs_lc);

	dump_run(trigger);