Re: AMD zen microcode updates breaks boot

[Jens Axboe]

On 10/21/24 1:31 AM, Borislav Petkov wrote:
> On Sun, Oct 20, 2024 at 06:47:25PM -0600, Jens Axboe wrote:
>> Works, outside of waiting 3 min for the serial console spewage from the
>> patch! But it boots and it's happy after that. Attached here gzip'ed as
>> it's 1.3M otherwise.
> 
> Thanks for testing.
> 
> Lemme write proper patches, run them everywhere here and give them to you for
> one final testing.

Sounds good, I'll give them a spin once posted.

>> root@r7625 ~# echo 1 > /sys/devices/system/cpu/microcode/reload
>> warning: An error occurred while redirecting file '/sys/devices/system/cpu/microcode/reload'
>> open: Permission denied
>>
>> and no output in dmesg.
> 
> Right, you need
> 
> CONFIG_MICROCODE_LATE_LOADING=y
> 
> for that.

Ah gotcha, makes sense.

-- 
Jens Axboe