Re: [PATCH 1/1] x86/microcode: Check for offline CPUs before checking for microcode update

2021-03-20 Thread Raj, Ashok
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.

Re: [PATCH 1/1] x86/microcode: Check for offline CPUs before checking for microcode update

2021-03-20 Thread Borislav Petkov
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

Re: [PATCH 1/1] x86/microcode: Check for offline CPUs before checking for microcode update

2021-03-19 Thread Pontes, Otavio
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