From: Noah Goldstein <goldstein.w.n@gmail.com>
To: Florian Weimer <fweimer@redhat.com>
Cc: libc-alpha@sourceware.org
Subject: Re: [PATCH 2/2] x86: Add generic CPUID data dumper to ld.so --list-diagnostics
Date: Mon, 11 Sep 2023 13:35:47 -0500 [thread overview]
Message-ID: <CAFUsyf+TPH-5Mv9r78Qs1ucnFbOd5tufSMvsrPCQ4_OkpaMc6g@mail.gmail.com> (raw)
In-Reply-To: <87bke8ppn0.fsf@oldenburg.str.redhat.com>
On Mon, Sep 11, 2023 at 12:48 PM Florian Weimer <fweimer@redhat.com> wrote:
>
> * Noah Goldstein:
>
> >> > If JSON isn't really feasible for technical reasons, however, so be it.
> >>
> >> There is that 53 bit problem, and we'd still have to use string keys for
> >> the objects.
> >
> > We can't find meaningful names for the information? If not do we even
> > want to dump it?
>
> My goal was to write a generic dumper, not something we need update for
> every new CPU generation. That's why I didn't want to hard-code subleaf
> structure and implement a brute-force approach instead.
>
> For example, when we had the leaf 2 problems, the existing dumps were
> insufficient. Tomorrow it might be a completely different leaf. And
> the dumper intends to cover everything, including parts that are only
> used by (possibly future) GCC versions in __builtin_cpu_supports.
>
I see. I guess that makes sense.
> Thanks,
> Florian
>
next prev parent reply other threads:[~2023-09-11 18:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-08 20:09 [PATCH 1/2] elf: Wire up _dl_diagnostics_cpu_kernel Florian Weimer
2023-09-08 20:10 ` [PATCH 2/2] x86: Add generic CPUID data dumper to ld.so --list-diagnostics Florian Weimer
2023-09-10 19:56 ` Noah Goldstein
2023-09-11 4:24 ` Florian Weimer
2023-09-11 16:16 ` Noah Goldstein
2023-09-11 16:25 ` Florian Weimer
2023-09-11 16:28 ` Noah Goldstein
2023-09-11 16:31 ` Noah Goldstein
2023-09-11 17:48 ` Florian Weimer
2023-09-11 18:35 ` Noah Goldstein [this message]
2023-09-11 16:08 ` Adhemerval Zanella Netto
2023-09-11 16:19 ` Florian Weimer
2023-09-11 16:41 ` Adhemerval Zanella Netto
2024-02-09 19:08 [PATCH 0/2] Enhanced x86 CPU diagnostics Florian Weimer
2024-02-09 19:08 ` [PATCH 2/2] x86: Add generic CPUID data dumper to ld.so --list-diagnostics Florian Weimer
2024-02-09 19:34 ` H.J. Lu
2024-02-10 0:44 ` H.J. Lu
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