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Date: Mon, 16 Apr 2018 09:59:20 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Incorrect /proc/cpuinfo for AMD A6-9220
Message-ID: <20180416075920.GB2539@calimero.vinschen.de>
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On Apr 13 20:36, Jeffrey Walton wrote:
> On Fri, Apr 13, 2018 at 7:51 AM, Corinna Vinschen
> <corinna-cygwin AT cygwin DOT 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!
>=20
> Thanks Corinna. I think I found the file of interest at fhandler_proc.cc.
>=20
> Whitespace is a bit off. It is a mix of tabs and space:
>=20
>       if (features1 & (1 << 0))
>     print (" fpu");
>       if (features1 & (1 << 1))
>     print (" vme");
>=20
> Should I perform a whitespace check-in before things begin? Or can you
> knock it out?

Whitespacing looks correct to me.  In vim speak, ts=3D8, sw=3D2.

Just add what you think is missing (make sure it matches AMD/Intel),
but stick to the whitespacing of the existing code.  Please check
https://cygwin.com/contrib.html.


Thanks,
Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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