On 2018-04-13 21:10, Jeffrey Walton wrote: >> On Fri, Apr 13, 2018 at 8:36 PM, Jeffrey Walton <noloa...@gmail.com> wrote: >>> On Fri, Apr 13, 2018 at 7:51 AM, Corinna Vinschen >>> <corinna-cyg...@cygwin.com> wrote: >>>> On Apr 12 23:01, Jeffrey Walton wrote: >>>>> Hi Everyone, >>>>> >>>>> I'm working on an AMD A6-9220 and seeing unusual results from >>>>> /proc/cpuinfo. I think this may be an issue with the latest Cygwin. It >>>>> may be present in earlier versions, too. >>>>> >>>>> Russinovich's coreinfo is shown below >>>>> (https://docs.microsoft.com/en-us/sysinternals/downloads/coreinfo). >>>>> Notice /proc/cpuinfo is missing aesni, pclmul, rdrand, SSE4.1, SSE4.2, >>>>> AVX, etc. >>>> >>>> Note that, in theory, cpuinfo has to be extended for each new CPU >>>> generation. That's a lot of work for marginal gain (Cygwin's not a real >>>> kernel) so I'm doing this only very seldomly. >>>> >>>> Patches welcome, of course! >>> >>> Thanks Corinna. I think I found the file of interest at fhandler_proc.cc. >>> >>> Whitespace is a bit off. It is a mix of tabs and space: >>> >>> if (features1 & (1 << 0)) >>> print (" fpu"); >>> if (features1 & (1 << 1)) >>> print (" vme"); >>> >>> Should I perform a whitespace check-in before things begin? Or can you >>> knock it out? >> >> The attachment is pp 572-74 from AMD's Programmer's Guide, Volume 3, >> General-Purpose and System Instructions (December 2017) >> (https://support.amd.com/TechDocs/24594.pdf). I believe it has the all >> the necessary information. >> >> Are there any objections to using it? > Any ideas how to get this through? It is a three page PDF extracted from the > AMD manual. It has the necessary information for the CPUID updates. Just include the link to Appendix D section 2 from the ToC: https://support.amd.com/TechDocs/24594.pdf#G14.931059
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