Date: Thu, 12 Apr 2007 21:58:45 +1000 From: Antony Mawer <fbsd-fs@mawer.org> To: =?ISO-8859-1?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no> Cc: freebsd-fs@freebsd.org, Peter Jeremy <peterjeremy@optushome.com.au>, freebsd-current@freebsd.org, Pawel Jakub Dawidek <pjd@freebsd.org>, ticso@cicely.de Subject: Re: ZFS committed to the FreeBSD base. Message-ID: <461E1EF5.9010809@mawer.org> In-Reply-To: <86ps6aht1i.fsf@dwp.des.no> References: <20070406025700.GB98545@garage.freebsd.pl> <86k5wo55s0.fsf@dwp.des.no> <20070407203411.GJ8831@cicely12.cicely.de> <86wt0n3mxv.fsf@dwp.des.no> <20070411214911.GA38351@VARK.MIT.EDU> <20070412073605.GB834@turion.vk2pj.dyndns.org> <86ps6aht1i.fsf@dwp.des.no>
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Dag-Erling Smørgrav wrote: > Peter Jeremy <peterjeremy@optushome.com.au> writes: >> There's a feature bit (CPUID_CX8) that advertises the availability of >> cmpxchg8b (and maybe some related instructions). My pre-MMX 586 has >> this bit set so I presume anything later than 486 will support it. >> (I'm not sure about the low-end VIA, GEODE etc clones). > > The Geode is a 486, and does not support it. > > The C3 however is a 586. The C3 Ezra and C3 Samuel / Samuel 2 do not > have CX8. I'm not sure about the C3 Nehemiah, I don't have one > running at the moment. The Nehemiah doesn't look like it has CX8.. from one of my systems running a PD10000 board: CPU: VIA C3 Nehemiah+RNG+ACE (1002.28-MHz 686-class CPU) Origin = "CentaurHauls" Id = 0x698 Stepping = 8 Features=0x381b83f<FPU,VME,DE,PSE,TSC,MSR,SEP,MTRR,PGE,CMOV,PAT,MMX,FXSR,SSE> --Antony
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