Date: Thu, 02 Sep 2010 11:25:52 +0300 From: Andriy Gapon <avg@icyb.net.ua> To: Jung-uk Kim <jkim@FreeBSD.org> Cc: jeff@FreeBSD.org, freebsd-stable@FreeBSD.org Subject: Re: 8.1-PRERELEASE: CPU packages not detected correctly Message-ID: <4C7F5F90.3030407@icyb.net.ua> In-Reply-To: <201009011426.26111.jkim@FreeBSD.org> References: <201007141414.o6EEEUx9014690@lurza.secnetix.de> <4C77F6D6.9020402@icyb.net.ua> <201008271536.08773.jkim@FreeBSD.org> <201009011426.26111.jkim@FreeBSD.org>
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on 01/09/2010 21:26 Jung-uk Kim said the following: > On Friday 27 August 2010 03:36 pm, Jung-uk Kim wrote: >> [3] AMD is working on an SMT-capable CPU (code-named Bulldozer) and >> my patch won't work on them. If anyone has a Bulldozer sample, >> please look into it. > > I checked AMD website today and found out a new CPUID Spec. Rev. 2.34 > was just released: > > http://support.amd.com/us/Embedded_TechDocs/25481.pdf > > They have added CPUID 0x8000001d and 0x8000001e to detect topology, it > seems. Also, CPUID 0x80000001 %ecx bit 22 (TopologyExtensions) tells > you whether the above CPUID functions are supported. > > Interesting... Yeah, I've heard that they are adding SMT capabilities in "Bulldozer" processors, so I guess they have to change CPU topology detection indicators. -- Andriy Gapon
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