From: "H. Peter Anvin" <hpa@zytor.com>
To: Dave Jones <davej@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
Venki Pallipadi <venkatesh.pallipadi@intel.com>,
Len Brown <len.brown@intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Andi Kleen <ak@suse.de>
Subject: Re: [PATCH] Display Intel Dynamic Acceleration feature in /proc/cpuinfo
Date: Thu, 24 May 2007 16:11:58 -0700 [thread overview]
Message-ID: <46561BBE.7030902@zytor.com> (raw)
In-Reply-To: <20070524230634.GA30651@redhat.com>
Dave Jones wrote:
> On Thu, May 24, 2007 at 03:51:31PM -0700, H. Peter Anvin wrote:
> > What you're describing is correct for later-level AMD/Cyrix chips,
> > however, when 3DNow! was first introduced they foolishly squatted on the
> > Intel-assigned CPUID flags.
>
> Hmm, the 3dnow spec (doc 21928e) has it in the right place, and I don't see
> anything in the errata docs I have.
>
> Do you have more info on this? If its true, I'd like to make x86info
> aware of it.
I don't have exact details, but I have sent off a query to someone I
know that probably *does* know the exact details.
Linux does the right thing, as it will turn off bit 31 if it seems AMD,
Cyrix or Centaur as the vendor ID (VIA still uses the Centaur VID
apparently.)
-hpa
next prev parent reply other threads:[~2007-05-24 23:12 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-23 22:46 [PATCH] Display Intel Dynamic Acceleration feature in /proc/cpuinfo Venki Pallipadi
2007-05-24 20:55 ` Andrew Morton
2007-05-24 21:01 ` Dave Jones
2007-05-24 21:08 ` Andi Kleen
2007-05-24 21:13 ` Venki Pallipadi
2007-05-24 21:25 ` Andi Kleen
2007-05-24 21:28 ` Venki Pallipadi
2007-05-24 21:37 ` Dave Jones
2007-05-24 21:56 ` Andi Kleen
2007-05-24 23:03 ` H. Peter Anvin
2007-05-24 23:13 ` Pallipadi, Venkatesh
2007-05-24 23:23 ` H. Peter Anvin
2007-05-25 0:00 ` Pallipadi, Venkatesh
2007-05-25 0:04 ` H. Peter Anvin
2007-05-30 0:52 ` Venki Pallipadi
2007-05-24 21:10 ` Venki Pallipadi
2007-05-24 22:02 ` Andrew Morton
2007-05-24 22:08 ` Venki Pallipadi
2007-05-24 22:16 ` H. Peter Anvin
2007-05-24 22:14 ` H. Peter Anvin
2007-05-24 22:41 ` Dave Jones
2007-05-24 22:51 ` H. Peter Anvin
2007-05-24 23:06 ` Dave Jones
2007-05-24 23:11 ` H. Peter Anvin [this message]
2007-05-24 23:50 ` Alan Cox
2007-05-24 23:53 ` H. Peter Anvin
2007-05-24 22:27 ` H. Peter Anvin
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