Mailinglist Archive: opensuse-kernel (80 mails)

[Thomas Renninger <trenn@xxxxxxx>]

On Monday, November 28, 2011 12:25:37 AM Cristian Rodríguez wrote:
> On 27/11/11 19:34, Thomas Renninger wrote:
> > On Wednesday 23 November 2011 18:20:14 Cristian Rodríguez wrote:
> > > Hi:
> > >
> > > Is there any news or improvements on the Intel microcode autoload
> > > feature so we can get rid of init/systemd scripts that currently do a
> > > task that is better done with either the kernel or udev ?
> > There is a tool to split up the microcode as provided by Intel
> > into individual family-model-stepping specific files.
> > http://pkgs.fedoraproject.org/repo/pkgs/microcode_ctl/intel-
microcode2ucode.c/0efc5f6c74a4d7e61ca22683c93c98cf/intel-microcode2ucode.c
> > I expect this should live in udev or in the kernel-firmware
> > repo (at least the Intel microcode should be there if possible).
>
> Problem is that it needs to be loaded either very early, just after /dev 
> creation or better in the initrd otherwise you will be booting init on a 
> buggy CPU, to make matters worst, no changelog is provided to know what 
> kind of bugs it fixes :-|

Not sure this is really needed. Most CPU things are initialized
already anyway.

Another (last) open issue is: What loads the microcode.ko driver?

Afaik Andi worked on autoloading CPU specific drivers, any news here?
Otherwise something static has to be added to udev, e.g. catching a
CPU add event, check and load microcode driver on all Intel and all
AMD fam10h or newer.

   Thomas
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