Commit 9b3dcae1 authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

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



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

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 7cc86dee

arch/s390/kernel/entry.S

+4 −3
Original line number Diff line number Diff line
@@ -307,12 +307,13 @@ SYM_CODE_START(ret_from_fork) 
	lgr	%r3,%r11

	brasl	%r14,__ret_from_fork

	STACKLEAK_ERASE

	lctlg	%c1,%c1,__LC_USER_ASCE

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

	GET_LC	%r13

	lctlg	%c1,%c1,__LC_USER_ASCE(%r13)

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

	BPON

	LBEAR	STACK_FRAME_OVERHEAD+__PT_LAST_BREAK(%r15)

	stpt	__LC_EXIT_TIMER(%r13)

	lmg	%r0,%r15,STACK_FRAME_OVERHEAD+__PT_R0(%r15)

	stpt	__LC_EXIT_TIMER

	LPSWEY	__LC_RETURN_PSW,__LC_RETURN_LPSWE

SYM_CODE_END(ret_from_fork)