s390/signal: remove sigreturn on stack
authorSven Schnelle <svens@linux.ibm.com>
Fri, 25 Jun 2021 13:06:06 +0000 (15:06 +0200)
committerVasily Gorbik <gor@linux.ibm.com>
Thu, 8 Jul 2021 20:12:17 +0000 (22:12 +0200)
commitfbf50f47ea99d07aec59859027352d4837e84ce1
tree1d8aae4f639d404a5619c0739485002bde932f4c
parentdf29a7440c4b5c65765c8f60396b3b13063e24e9
s390/signal: remove sigreturn on stack

{rt_}sigreturn is now called from the vdso, so we no longer
need the svc on the stack, and therefore no hack to support that
mechanism on machines with non-executable stack.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
arch/s390/include/asm/entry-common.h
arch/s390/kernel/syscall.c
arch/s390/kernel/traps.c
arch/s390/mm/fault.c