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From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Sat, 12 Feb 2022 07:50:32 -0800
Message-ID: <CAMe9rOr7Hgho0=8HRamgOGHBRGQ1GF0bB=MinzeLcMvenwBjXQ@mail.gmail.com>
Subject: Re: [PATCH] x86: Don't check PTWRITE in tst-cpu-features-cpuinfo.c
To: GNU C Library <libc-alpha@sourceware.org>
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On Wed, Jan 26, 2022 at 12:28 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> Don't check PTWRITE against /proc/cpuinfo since kernel doesn't report
> PTWRITE in /proc/cpuinfo.
> ---
>  sysdeps/x86/tst-cpu-features-cpuinfo.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/sysdeps/x86/tst-cpu-features-cpuinfo.c b/sysdeps/x86/tst-cpu-features-cpuinfo.c
> index 91a656b61d..981b2be5fd 100644
> --- a/sysdeps/x86/tst-cpu-features-cpuinfo.c
> +++ b/sysdeps/x86/tst-cpu-features-cpuinfo.c
> @@ -218,7 +218,10 @@ do_test (int argc, char **argv)
>    fails += CHECK_PROC (popcnt, POPCNT);
>    fails += CHECK_PROC (3dnowprefetch, PREFETCHW);
>    fails += CHECK_PROC (prefetchwt1, PREFETCHWT1);
> +#if 0
> +  /* NB: /proc/cpuinfo doesn't report this feature.  */
>    fails += CHECK_PROC (ptwrite, PTWRITE);
> +#endif
>    fails += CHECK_PROC (pse, PSE);
>    fails += CHECK_PROC (pse36, PSE_36);
>    fails += CHECK_PROC (psn, PSN);
> --
> 2.34.1
>

I will check in this next Monday to fix the test on Intel Alder Lake.

-- 
H.J.