From: "H. Peter Anvin" <hpa@zytor.com>
To: Andy Whitcroft <apw@canonical.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Christoph Hellwig <hch@lst.de>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/1] x86: should 32 bit processes be PER_LINUX32
Date: Tue, 14 Sep 2010 11:19:54 -0700 [thread overview]
Message-ID: <4C8FBCCA.6060001@zytor.com> (raw)
In-Reply-To: <1284480057-18120-1-git-send-email-apw@canonical.com>
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
next prev parent reply other threads:[~2010-09-14 18:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-14 16:00 [PATCH 0/1] x86: should 32 bit processes be PER_LINUX32 Andy Whitcroft
2010-09-14 16:00 ` [PATCH 1/1] x86: ensure we correctly advertise 32 bit processes in a 64 bit kernel Andy Whitcroft
2010-09-14 18:19 ` H. Peter Anvin [this message]
2010-09-14 18:31 ` [PATCH 0/1] x86: should 32 bit processes be PER_LINUX32 Michael Tokarev
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