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| author |   Arnd Bergmann <arnd@arndb.de> | 2019-01-16 14:15:21 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-01-18 09:33:18 +0100 |
| commit | fef747bab3c09b30b82f76a391ee0ed83d2d6965 (patch) | |
| tree | 3a32716e2fd14f6c045240a9a82bdf28bb7b37f5 /arch/s390/Kconfig | |
| parent | ipc: introduce ksys_ipc()/compat_ksys_ipc() for s390 (diff) | |
| download | linux-dev-fef747bab3c09b30b82f76a391ee0ed83d2d6965.tar.xz linux-dev-fef747bab3c09b30b82f76a391ee0ed83d2d6965.zip | |
s390: use generic UID16 implementation
s390 has an almost identical copy of the code in kernel/uid16.c.
The problem here is that it requires calling the regular system calls,
which the generic implementation handles correctly, but the internal
interfaces are not declared in a global header for this.
The best way forward here seems to be to just use the generic code and
delete the s390 specific implementation.
I keep the changes to uapi/asm/posix_types.h inside of an #ifdef check
so user space does not observe any changes. As some of the system calls
pass pointers, we also need wrappers in compat_wrapper.c, which I add
for all calls with at least one argument. All those wrappers can be
removed in a later step.
Link: https://lore.kernel.org/lkml/20190116131527.2071570-4-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/Kconfig')
| -rw-r--r-- | arch/s390/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index ed554b09eb3f..41cafd245bbc 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -379,6 +379,7 @@ config COMPAT select COMPAT_BINFMT_ELF if BINFMT_ELF select ARCH_WANT_OLD_COMPAT_IPC select COMPAT_OLD_SIGACTION + select HAVE_UID16 depends on MULTIUSER help Select this option if you want to enable your system kernel to |