diff options
| author | Sven Schnelle <svens@linux.ibm.com> | 2021-06-25 14:48:28 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2021-07-08 15:37:28 +0200 |
| commit | 686341f2548b5a4c4ab1ee22427e046027ae1c9c (patch) | |
| tree | 8b660e0f6bf87f85253d6a2211eaa5d1661139c3 /arch/s390/Makefile | |
| parent | s390/vdso: always enable vdso (diff) | |
| download | linux-686341f2548b5a4c4ab1ee22427e046027ae1c9c.tar.xz linux-686341f2548b5a4c4ab1ee22427e046027ae1c9c.zip | |
s390/vdso64: add sigreturn,rt_sigreturn and restart_syscall
Add minimalistic trampolines to vdso64 so we can return from signal
without using the stack which requires pgm check handler hacks when
NX is enabled.
restart_syscall will be called from vdso to work around the architectural
limitation that the syscall number might be encoded in the svc instruction,
and therefore can not be changed.
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>
Diffstat (limited to 'arch/s390/Makefile')
0 files changed, 0 insertions, 0 deletions