On Wed, Mar 10, 2021 at 08:37:38AM -0800, [email protected] wrote:
> From: Ricardo Neri <[email protected]>
>
> On processors with Intel Hybrid Technology (i.e., one having more than one
> type of CPU in the same package), all CPUs support the same instruction
> set and enumerate the same features on CPUID. Thus, all software can run
> on any CPU without restrictions. However, there may be model-specific
> differences among types of CPUs. For instance, each type of CPU may support
> a different number of performance counters. Also, machine check error banks
> may be wired differently. Even though most software will not care about
> these differences, kernel subsystems dealing with these differences must
> know. Add a new member to cpuinfo_x86 that subsystems can query to know
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
That is not the case anymore.
And it looks like the IPIing is going away too, which is good.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
