Re: [PATCH 0/1] x86: should 32 bit processes be PER_LINUX32

From: H. Peter Anvin
Date: Tue Sep 14 2010 - 14:20:49 EST


On 09/14/2010 09:00 AM, Andy Whitcroft wrote:
> While testing an x86 64 bit kernel on 32 bit userspace I noticed that I
> was unexpectedly seeing x86_64 as the architecture as reported in uname.
> The kernel seems to have code to detect 32 bit userspace and slam this
> to i686, triggered off the personality PER_LINUX32. However 32 bit
> processes do not seem to get this flag. I think this is an oversight.
> The following patch attempts to fix this up.

No, it's not an oversight. It's possible to hide it behind PER_LINUX32,
but that's a bigger hammer that not all users want.

-hpa
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