Commit 33ea0487 authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

s390: use r13 in cleanup_sie as temp register 



Instead of thrashing r11 which is normally our pointer to struct
pt_regs on the stack, use r13 as temporary register in the BR_EX
macro. r13 is already used in cleanup_sie, so no need to thrash
another register.

Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 26521412

arch/s390/kernel/entry.S

+2 −2
Original line number Diff line number Diff line
@@ -130,7 +130,7 @@ _LPP_OFFSET = __LC_LPP 
	.endm



	GEN_BR_THUNK %r14

	GEN_BR_THUNK %r14,%r11

	GEN_BR_THUNK %r14,%r13



	.section .kprobes.text, "ax"

.Ldummy:
@@ -665,7 +665,7 @@ ENDPROC(stack_overflow) 
	ni	__SIE_PROG0C+3(%r9),0xfe	# no longer in SIE

	lctlg	%c1,%c1,__LC_KERNEL_ASCE

	larl	%r9,sie_exit			# skip forward to sie_exit

	BR_EX	%r14,%r11

	BR_EX	%r14,%r13



#endif

	.section .rodata, "a"