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author | Thomas Gleixner <tglx@linutronix.de> | 2019-02-10 20:44:19 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2019-02-10 20:44:19 +0100 |
commit | fd659cc095af9cc103e7a2a6448e8bb027035e40 (patch) | |
tree | 3cc147fd2180371bfa84a0688e00f5220b874ee2 /arch/x86/entry | |
parent | 74e96711e3379fc66630f2a1d184947f80cf2c48 (diff) | |
parent | 805089c2f77047d81f47ddc227435d606ceb180e (diff) | |
download | linux-fd659cc095af9cc103e7a2a6448e8bb027035e40.tar.gz linux-fd659cc095af9cc103e7a2a6448e8bb027035e40.tar.bz2 linux-fd659cc095af9cc103e7a2a6448e8bb027035e40.zip |
Merge tag 'y2038-syscall-cleanup' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground into timers/2038
Pull preparatory work for y2038 changes from Arnd Bergmann:
System call unification and cleanup
The system call tables have diverged a bit over the years, and a number of
the recent additions never made it into all architectures, for one reason
or another.
This is an attempt to clean it up as far as we can without breaking
compatibility, doing a number of steps:
- Add system calls that have not yet been integrated into all architectures
but that we definitely want there. This includes {,f}statfs64() and
get{eg,eu,g,p,u,pp}id() on alpha, which have been missing traditionally.
- The s390 compat syscall handling is cleaned up to be more like what we
do on other architectures, while keeping the 31-bit pointer
extension. This was merged as a shared branch by the s390 maintainers
and is included here in order to base the other patches on top.
- Add the separate ipc syscalls on all architectures that traditionally
only had sys_ipc(). This version is done without support for IPC_OLD
that is we have in sys_ipc. The new semtimedop_time64 syscall will only
be added here, not in sys_ipc
- Add syscall numbers for a couple of syscalls that we probably don't need
everywhere, in particular pkey_* and rseq, for the purpose of symmetry:
if it's in asm-generic/unistd.h, it makes sense to have it everywhere. I
expect that any future system calls will get assigned on all platforms
together, even when they appear to be specific to a single architecture.
- Prepare for having the same system call numbers for any future calls. In
combination with the generated tables, this hopefully makes it easier to
add new calls across all architectures together.
All of the above are technically separate from the y2038 work, but are done
as preparation before we add the new 64-bit time_t system calls everywhere,
providing a common baseline set of system calls.
I expect that glibc and other libraries that want to use 64-bit time_t will
require linux-5.1 kernel headers for building in the future, and at a much
later point may also require linux-5.1 or a later version as the minimum
kernel at runtime. Having a common baseline then allows the removal of many
architecture or kernel version specific workarounds.
Diffstat (limited to 'arch/x86/entry')
-rw-r--r-- | arch/x86/entry/syscalls/syscall_32.tbl | 11 | ||||
-rw-r--r-- | arch/x86/entry/syscalls/syscall_64.tbl | 2 |
2 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl index 3cf7b533b3d1..2be1d0eb7754 100644 --- a/arch/x86/entry/syscalls/syscall_32.tbl +++ b/arch/x86/entry/syscalls/syscall_32.tbl @@ -398,3 +398,14 @@ 384 i386 arch_prctl sys_arch_prctl __ia32_compat_sys_arch_prctl 385 i386 io_pgetevents sys_io_pgetevents __ia32_compat_sys_io_pgetevents 386 i386 rseq sys_rseq __ia32_sys_rseq +# don't use numbers 387 through 392, add new calls at the end +393 i386 semget sys_semget __ia32_sys_semget +394 i386 semctl sys_semctl __ia32_compat_sys_semctl +395 i386 shmget sys_shmget __ia32_sys_shmget +396 i386 shmctl sys_shmctl __ia32_compat_sys_shmctl +397 i386 shmat sys_shmat __ia32_compat_sys_shmat +398 i386 shmdt sys_shmdt __ia32_sys_shmdt +399 i386 msgget sys_msgget __ia32_sys_msgget +400 i386 msgsnd sys_msgsnd __ia32_compat_sys_msgsnd +401 i386 msgrcv sys_msgrcv __ia32_compat_sys_msgrcv +402 i386 msgctl sys_msgctl __ia32_compat_sys_msgctl diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index f0b1709a5ffb..9d8128ef50a9 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -343,6 +343,8 @@ 332 common statx __x64_sys_statx 333 common io_pgetevents __x64_sys_io_pgetevents 334 common rseq __x64_sys_rseq +# don't use numbers 387 through 423, add new calls after the last +# 'common' entry # # x32-specific system call numbers start at 512 to avoid cache impact |