Re: SGI O2 meth: missing sysfs device symlink

[Kumba <kumba@gentoo.org>]

Ralf Baechle wrote:
> On Mon, May 21, 2007 at 04:47:26PM +0100, Ralf Baechle wrote:
>
> Below patch is meant to cure the problem.  It's against HEAD but should
> apply to somewhat older problems as well.
>
> I appreciate testing asap so I can try to still push this upstream
> for 2.6.22.
>
> Thanks,
>
>   Ralf
Didn't test on 2.6.22 (yet), but 2.6.21.1 works:

# ls -ld /sys/class/net/*{,/device}
drwxr-xr-x 3 root root 0 May 22 18:19 /sys/class/net/eth0/
lrwxrwxrwx 1 root root 0 May 22 18:19 /sys/class/net/eth0/device -> 
../../../devices/platform/meth/
drwxr-xr-x 3 root root 0 May 22 18:19 /sys/class/net/lo/


Btw, If we wanted to protect meth from the speculative execution issues of the 
R10000 processor, what's the right way for that?  I believe IP28 used a special 
type of buffer for protecting Seeq from the DMA wonkiness that occurs, but I got 
the indication that Meth would need a different approach.

--Kumba

--
Gentoo/MIPS Team Lead

"Such is oft the course of deeds that move the wheels of the world: small hands 
do them because they must, while the eyes of the great are elsewhere."  --Elrond