Date: Thu, 9 Mar 2023 16:21:53 +0900
From: Masanobu SAITOH <msai...@execsw.org>
Message-ID: <38ae66bd-1b37-c0ef-5a43-52e0c0a2a...@execsw.org>
| Alder Lake-N? 4 E-cores share one microcode image. I have i7-12700 and it
| has 4 E-cores. Those 4 cores share one microcode image.
Mine is an i9-12900KS which has 8 of them (2 groups of 4).
Thanks for the confirmation, that is what looked to be happening, but
I was just guessing from what I observed. I just use intel processors
(and others on occasion) I don't even pretend to understand them.
| I think your idea is the best. Thank you for your commit.
No problem. It was not a difficult change to make!
| Another solutions is that the kernel returns 0 instead of EEXIST if the
| version number is the same as the running microcode's version.
Yes, I considered that one as well, but as you indicate, doing that just
loses information, and gains nothing - the same number of sys calls (ioctl's)
would be performed, all that would be saved is the check to see if the
error is EEXIST when that happens (ie: peanuts).
kre
ps: do your E-cores ever just turn themselves off? On mine, occasionally,
and for no reason I can fathom, the BIOS reports there are none of them.
(and NetBSD doesn't see them either). They come back after a power cycle.
This is probably a BIOS issue, but ?
