From: Denis Vlasenko <vda@ilport.com.ua>
To: Zwane Mwaikambo <zwane@arm.linux.org.uk>, Andrew Morton <akpm@osdl.org>
Cc: Andi Kleen <ak@suse.de>, Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] cpuid x87 bit on AMD falsely marked as PNI
Date: Wed, 27 Apr 2005 10:00:29 +0300 [thread overview]
Message-ID: <200504271000.29206.vda@ilport.com.ua> (raw)
In-Reply-To: <Pine.LNX.4.61.0504261851070.12903@montezuma.fsmlabs.com>
On Wednesday 27 April 2005 04:20, Zwane Mwaikambo wrote:
> http://bugme.osdl.org/show_bug.cgi?id=4426
>
> vendor_id : AuthenticAMD
> cpu family : 6
> model : 10
> model name : AMD Athlon(tm) XP
> stepping : 0
> cpu MHz : 2204.807
> <snipped>
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
> pat pse36 mmx fxsr sse pni syscall mmxext 3dnowext 3dnow
> bogomips : 4358.14
>
> We're marking bit 0 of extended function 0x80000001 cpuid as PNI support
> on AMD processors, when it actually denotes x87 FPU present. Patch for
> i386 and x86_64 below.
I just yesterday noticed that my Athlon (non-64bit) has 'pni' in CPU
flags and was very puzzled.
Thanks Zwane.
--
vda
prev parent reply other threads:[~2005-04-27 7:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-27 1:20 Zwane Mwaikambo
2005-04-27 7:00 ` Denis Vlasenko [this message]
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