[PATCH] build in microcode driver on x86
Bill Nottingham
notting at redhat.com
Wed Jan 14 20:20:01 UTC 2009
Dave Jones (davej at redhat.com) said:
> On Wed, Jan 14, 2009 at 01:17:38PM -0500, Bill Nottingham wrote:
> > It doesn't really gain anything from being static, aside from requiring
> > odd udev rules and/or init scripts to load it.
>
> We had this discussion yesterday on irc, but I never really got this in my head.
>
> It works ok with microcode.dat, but what happens if Intel release
> an update in /lib/firmware/intel-ucode/$f-$m-$s format ?
>
> The driver will do a request_firmware, but if we build the driver in,
> we'll be in the initrd, where that file won't exist.
> To make it work, we'll either have to..
>
> - have the firmware in the initramfs
>
> or
>
> - pretend the request_firmware didn't happen, and have the initscript
> continue to do the microcode_ctl
>
> Which direction are we moving in ?
AIUI, the driver's firmware request will get kicked off again when
udev triggers all the normal coldplug events. So, that should be handled
OK.
Bill
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