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Re: [PATCH] powerpc: Enable demuxed sysv IPC syscalls
- From: Andreas Schwab <schwab at linux-m68k dot org>
- To: Michael Ellerman <mpe at ellerman dot id dot au>
- Cc: Arnd Bergmann <arnd at arndb dot de>, libc-alpha at sourceware dot org, "Paul E. Murphy" <murphyp at linux dot vnet dot ibm dot com>, Tulio Magno Quites Machado Filho <tuliom at linux dot vnet dot ibm dot com>, Sam Bobroff <sam dot bobroff at au1 dot ibm dot com>
- Date: Wed, 16 Dec 2015 10:59:43 +0100
- Subject: Re: [PATCH] powerpc: Enable demuxed sysv IPC syscalls
- Authentication-results: sourceware.org; auth=none
- References: <5660A8D0 dot 5090003 at linux dot vnet dot ibm dot com> <1450253328 dot 19757 dot 2 dot camel at ellerman dot id dot au> <mvmy4cu6aya dot fsf at hawking dot suse dot de> <2535039 dot fp0alOV0kv at wuerfel> <1450257707 dot 4370 dot 2 dot camel at ellerman dot id dot au>
Michael Ellerman <mpe@ellerman.id.au> writes:
> So the only complication with reverting the patch is that we've since added
> sys_mlock2 after the IPC calls, as NR 378.
>
> I guess because we haven't released a kernel with mlock2 using that number I'll
> just renumber it, as if the IPC calls were never there.
There is no need to renumber, a gap doesn't pose any difficulties.
Syscall numbers can be reserved any time, the important part is that you
get ENOSYS when trying to call the new ipc syscalls until the final ABI
is implemented.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
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