[lkml]   [2001]   [Jun]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Changing CPU Speed while running Linux
> > Can you dig that out? I'd like to take a look.
> >
> > [Of course, problem is *not* solved: you still have short time when
> > kernel runs with wrong bogomips.]
> Not really. WHen you do the speed change on most of these cpus you have to
> do it with IRQs off and with the PCI bridge temporarily disabled as the CPU
> disconnects from the bus during speed transititions and cannot take part in
> cache coherency

Though it's been a while, last time I read the elan sc400 (or was it the
410, always get those two mixed up), datasheet, there were no
special procedures needed, just change the speed.
This may have been because there is no external PCI bus.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:55    [W:0.043 / U:1.416 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site