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Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures

From James Bottomley <James.Bottomley@HansenPartnership.com>
Newsgroups linux.kernel
Subject Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures
Date 2017-02-02 00:20 +0100
Message-ID <t6clX-4e8-1@gated-at.bofh.it> (permalink)
References <t4zmG-Km-19@gated-at.bofh.it> <t5QY9-7lX-1@gated-at.bofh.it>
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On Tue, 2017-01-31 at 16:26 -0800, Andrew Morton wrote:
> On Sat, 28 Jan 2017 12:13:10 +0100 Helge Deller <deller@gmx.de>
> wrote:
> 
> > The prctl(PR_GET_ENDIAN) syscall was added to Kernel 2.6.18, but
> > implemented for PowerPC only. This trivial patch adds support for 
> > this syscall for all other architectures.
> 
> Seems reasonable.  I guess.  Why is this needed?

I don't think it is other than for PPC.  If you're not variable endian
(which is only PPC to date), then you should know a priori what endian
you are from the #defines in userspace.

James

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Thread

Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures Andrew Morton <akpm@linux-foundation.org> - 2017-02-01 01:30 +0100
  Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures Helge Deller <deller@gmx.de> - 2017-02-01 20:50 +0100
    Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures Andrew Morton <akpm@linux-foundation.org> - 2017-02-01 23:10 +0100
  Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures James Bottomley <James.Bottomley@HansenPartnership.com> - 2017-02-02 00:20 +0100
    Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures Andy Lutomirski <luto@kernel.org> - 2017-02-02 06:10 +0100
    Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures Matt Turner <mattst88@gmail.com> - 2017-02-05 12:50 +0100
      Re: [PATCH] prctl: implement PR_GET_ENDIAN for all architectures "Maciej W. Rozycki" <macro@linux-mips.org> - 2017-02-05 14:20 +0100

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