Re: [PATCH] don't create regular files in devfs (fwd)

[Tigran Aivazian]

On 14 Jan 2003, Arjan van de Ven wrote:

> On Tue, 2003-01-14 at 17:32, Tigran Aivazian wrote:
>
> > If you move it all the way to sysfs (i.e. no device node in /dev) then it
> > seems a bit odd that a device driver entry point is found somewhere other
> > than the usual /dev.
>
> well
>
> cat firmware > /sys/processor/0/microcode
>
> is obviously the ultimate interface for this ;)

No, because cat is using 4K chunks and the data has to be written in one
large chunk, like this:

# dd if=microcode of=/dev/cpu/microcode bs=141312 count=1

This actually works fine but you need to convert microcode data from human
readable (what Intel distribute) to binary format first. Easily done with
microcode_ctl utility.

Regards
Tigran