Commit 4064b711 authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

s390/entry: Make restart_int_handler() ready for lowcore relocation 



In preparation of having lowcore at different address than zero,
add the base register to all lowcore accesses in restart_int_handler().

Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 0001b7bb

arch/s390/kernel/entry.S

+8 −6
Original line number Diff line number Diff line
@@ -573,15 +573,17 @@ SYM_CODE_START(restart_int_handler) 
0:	larl	%r15,daton_psw

	lpswe	0(%r15)				# turn dat on, keep irqs off

.Ldaton:

	lg	%r15,__LC_RESTART_STACK

	GET_LC	%r15

	lg	%r15,__LC_RESTART_STACK(%r15)

	xc	STACK_FRAME_OVERHEAD(__PT_SIZE,%r15),STACK_FRAME_OVERHEAD(%r15)

	stmg	%r0,%r14,STACK_FRAME_OVERHEAD+__PT_R0(%r15)

	mvc	STACK_FRAME_OVERHEAD+__PT_R15(8,%r15),__LC_SAVE_AREA_RESTART

	mvc	STACK_FRAME_OVERHEAD+__PT_PSW(16,%r15),__LC_RST_OLD_PSW

	GET_LC	%r13

	mvc	STACK_FRAME_OVERHEAD+__PT_R15(8,%r15),__LC_SAVE_AREA_RESTART(%r13)

	mvc	STACK_FRAME_OVERHEAD+__PT_PSW(16,%r15),__LC_RST_OLD_PSW(%r13)

	xc	0(STACK_FRAME_OVERHEAD,%r15),0(%r15)

	lg	%r1,__LC_RESTART_FN		# load fn, parm & source cpu

	lg	%r2,__LC_RESTART_DATA

	lgf	%r3,__LC_RESTART_SOURCE

	lg	%r1,__LC_RESTART_FN(%r13)	# load fn, parm & source cpu

	lg	%r2,__LC_RESTART_DATA(%r13)

	lgf	%r3,__LC_RESTART_SOURCE(%r13)

	ltgr	%r3,%r3				# test source cpu address

	jm	1f				# negative -> skip source stop

0:	sigp	%r4,%r3,SIGP_SENSE		# sigp sense to source cpu