From: Mark Nelson <markn@au1.ibm.com>
To: linuxppc-dev@ozlabs.org
Cc: Gunnar von Boehn <VONBOEHN@de.ibm.com>,
Arnd Bergmann <arnd@arndb.de>, Paul Mackerras <paulus@samba.org>,
Olof Johansson <olof@lixom.net>,
Michael Ellerman <ellerman@au1.ibm.com>,
cbe-oss-dev@ozlabs.org
Subject: Re: [RFC 0/3] powerpc: memory copy routines tweaked for Cell
Date: Fri, 20 Jun 2008 10:04:02 +1000 [thread overview]
Message-ID: <200806201004.02749.markn@au1.ibm.com> (raw)
In-Reply-To: <F5386B83-6DD2-4503-9ADD-C0CDE21101ED@lixom.net>
On Fri, 20 Jun 2008 12:53:49 am Olof Johansson wrote:
>
> On Jun 19, 2008, at 8:59 AM, Arnd Bergmann wrote:
>
> > I assume it has suffered from bitrot and nobody tried to do better
> > since the Power3 days. AFAICT, it hasn't seen any update since your
> > original Power4 version from 2002.
>
> I've got an out-of-tree optimized version for pa6t as well that I
> haven't bothered posting yet.
>
> The real pain with the usercopy code is all the exception cases. If
> anyone has made a test harness to make sure they're all right, please
> do post it for others to use as well...
I second that request - I verified (to the best that I could) with
pen and paper that the exception handling on this new version
is correct but it would be great to have a better way to test it.
Mark
next prev parent reply other threads:[~2008-06-20 0:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-19 7:53 [RFC 0/3] powerpc: memory copy routines tweaked for Cell Mark Nelson
2008-06-19 11:53 ` Arnd Bergmann
2008-06-19 12:02 ` Paul Mackerras
2008-06-19 13:59 ` Arnd Bergmann
2008-06-19 14:53 ` Olof Johansson
2008-06-20 0:04 ` Mark Nelson [this message]
2008-06-19 12:11 ` Gunnar von Boehn
2008-06-19 23:33 ` Paul Mackerras
2008-06-20 16:12 ` Gunnar von Boehn
2008-06-19 23:49 ` Mark Nelson
2008-06-21 0:12 ` Mark Nelson
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