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From: Olof Johansson <olof@lixom.net>
To: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev list <linuxppc-dev@ozlabs.org>,
	paulus@samba.org, cbe-oss-dev@ozlabs.org
Subject: Re: Cell and new CPU feature bits
Date: Fri, 19 May 2006 11:18:22 -0500	[thread overview]
Message-ID: <20060519161822.GL8220@pb15.lixom.net> (raw)
In-Reply-To: <200605191211.18737.arnd@arndb.de>

On Fri, May 19, 2006 at 12:11:18PM +0200, Arnd Bergmann wrote:
> On Friday 19 May 2006 06:07, Benjamin Herrenschmidt wrote:
> >  - Extended implementation of dcbt. (Another bit ? Or sould we just have
> > a "CELL" bit ? In which case should it cover the altivec additions too
> > or are those likely to exist in future non-Cell processors ?)
> 
> Isn't that already covered by PPC_FEATURE_CELL? Git log shows

First, please don't use the cell bit for this since other processors
seem to implement the same things.

Second, the quoted information is 6 months old, and seemingly stale by
now. When Paulus pushed the POWER6 patch, he switched from the notion
of it signifying processor model to being base arch version. See:

http://ozlabs.org/pipermail/linuxppc-dev/2006-April/022525.html

(My patch to rename the existing POWER* bits to ARCH_2_* wasn't picked
up, I'll resend)


-Olof

  reply	other threads:[~2006-05-19 16:18 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-19  4:07 Cell and new CPU feature bits Benjamin Herrenschmidt
2006-05-19  5:19 ` Olof Johansson
2006-05-19  5:27   ` [Cbe-oss-dev] " Andrew Pinski
2006-05-19  7:49     ` Segher Boessenkool
2006-05-26  6:19     ` Benjamin Herrenschmidt
2006-05-26  6:19   ` Benjamin Herrenschmidt
2006-05-26  6:43     ` Olof Johansson
2006-05-26  7:33       ` Benjamin Herrenschmidt
2006-05-26 15:16         ` Olof Johansson
2006-05-19  8:16 ` Gabriel Paubert
2006-05-22 19:46   ` [Cbe-oss-dev] " Alex Rosenberg
2006-05-23 21:52     ` Benjamin Herrenschmidt
2006-05-26  6:22   ` Benjamin Herrenschmidt
2006-05-19 10:11 ` [Cbe-oss-dev] " Arnd Bergmann
2006-05-19 16:18   ` Olof Johansson [this message]
2006-05-19 22:33     ` Paul Mackerras
2006-05-26  6:22   ` [Cbe-oss-dev] " Benjamin Herrenschmidt

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