On Sat, Mar 20, 2021 at 03:55:46PM +0100, Borislav Petkov wrote:
[snip]
> > microcode : 0x30
> > microcode : 0xde
> > microcode : 0x30
> > microcode : 0xde
>
> Yeah, I'm looking at that check_online_cpus() thing and wondering why we
> even need that:
>
> 0. So you have CPUs 1 and 3 offline.
> 1.
On Fri, Mar 19, 2021 at 06:48:14PM +, Pontes, Otavio wrote:
> Turn off one core (2 threads)
> $ echo 0 > /sys/devices/system/cpu/cpu3/online
> $ echo 0 > /sys/devices/system/cpu/cpu1/online
>
> Install the ucode fails because there's one core off
> $ cp intel-ucode/06-8e-09
Sorry, I forgot to copy LKML
From: Pontes, Otavio
Sent: Friday, March 19, 2021 9:55 AM
To: x...@kernel.org
Cc: Borislav Petkov; Thomas Gleixner; Pontes, Otavio; Raj, Ashok; Luck, Tony
Subject: [PATCH 1/1] x86/microcode: Check for offline CPUs before
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