Messages in this thread | | | Date | Tue, 25 Mar 2003 16:43:25 +0000 | From | Dave Jones <> | Subject | Re: cacheline size detection code in 2.5.66 |
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On Tue, Mar 25, 2003 at 05:39:37PM +0300, Ivan Kokshaysky wrote: > On Tue, Mar 25, 2003 at 02:35:25PM +0100, Andi Kleen wrote: > > Ivan confused me. Either he read the application note wrong or it is wrong. > > Ok, it's available at > http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/20734.pdf
For info, that is a reliable[*] way to detect XP/MP Athlons. It's used in the kernel for SMP tainting, and x86info has also been using it for some time.
Dave
[*] AMD screwed up one stepping of XPs and enabled the MP bit even though they weren't actually MPs.
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