Date: Mon, 26 Sep 2005 16:26:36 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: obrien@FreeBSD.org Cc: freebsd-current@FreeBSD.org Subject: AMD/Intel multicore detection (Was: Re: [PATCH] AMD multicore detection) Message-ID: <200509261626.47937.jkim@FreeBSD.org> In-Reply-To: <20050926160431.GA1649@dragon.NUXI.org> References: <200509211550.27524.jkim@FreeBSD.org> <20050926160431.GA1649@dragon.NUXI.org>
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On Monday 26 September 2005 12:04 pm, David O'Brien wrote: > On Wed, Sep 21, 2005 at 03:50:24PM -0400, Jung-uk Kim wrote: > > I renewed my multicore detection patch, which was originally > > posted here: > > > > http://docs.freebsd.org/cgi/mid.cgi?200505181935.18493.jkim > > http://docs.freebsd.org/cgi/mid.cgi?200505182007.28631.jkim > > > > New patch is here: > > http://people.freebsd.org/~jkim/multicore.diff > > I've got something I'm working on for AMD dual-core. Please don't > commit this. We work just fine on AMD dual-core. The patch to > disable cores on Intel Hyperthreaded CPU's does not affect AMD > dual-core in one bit. The author nicely took the different vendors > into account. > > AMD sets the CPUID.HTT simply for licensing issues - something that > does not affect FreeBSD at all. > > If there is something needed for Intel dual-core CPU's with > HyperThreading to use the real cores, but not the virtual cores - > then by all means please commit it. Okay. I have a new patch here: http://people.freebsd.org/~jkim/multicore-20050926.diff I removed mp_machdep.c patch and added proper multicore identification for both AMD and Intel CPUs. I hope this does not overlap with your work. Please review/test. > > Please test and let me know. I don't have multicore CPU to test > > it for myself. :-( > > I do and am working on something. Please explain what you are working on, so that we don't make duplicate effort. Thanks, Jung-uk Kim
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