Re: [PATCH v5 00/35] x86: Introduce a centralized CPUID data model

Hi,

On Fri, 05 Sep 2025, Ahmed S. Darwish wrote:
>
>     /*
>      * Compile-time failure: Requested subleaf > max dynamic subleaf
>      * CPUID(0xd).n, n > 62
>      */
>
>     cpuid_subleaf_n(&boot_cpu_data, 0xd, 63);
>

Sorry, this actually is:

    /*
     * Compile-time failure: Requested subleaf > max dynamic subleaf
     * CPUID(0xd).n, n > 63
     */

    cpuid_subleaf_n(&boot_cpu_data, 0xd, 64);

which is the correct thing, as per the Intel SDM manuals: n <= 63.

That false upper-bound snippet was a left over from a previous cover
letter draft.  That is, before the x86-cpuid-db commit:

    https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/commit/f3d9bc48b4a

Thanks!

--
Ahmed S. Darwish
Linutronix GmbH