Re: [PATCH] Re: AMD Mobile Semprons (3500+, 3600+,...) break withnohz and highres enabled
From: Thomas Gleixner
Date: Thu Jul 17 2008 - 07:06:30 EST
On Thu, 17 Jul 2008, Richard wrote:
> > north-bridge: nvidia c51mv
> > south-bridge: nvidia mcp51m
> > Also both are MSI laptops:
> > - MSI-M670, modell MS-1632
> > - MSI S430x
> > (This could also be a chipset or even an MSI specific BIOS bug?
> > Richard could you compare with your HW, pls if still possible).
> > Some more info:
> > - things break entering C2 or deeper
> > - noapictimer workaround helps to come a bit further, but results in sever
> > other errors, disk(dma error), keyboad, mouse etc., also see:
Hmm, I don't see how the apic timer is related to that, but it might
be a problem with the hpet.
Does "noapictimer nohz=off" work ?
> > https://bugzilla.novell.com/show_bug.cgi?id=396220#c13
> > - "nohz=off" works (tested on 184.108.40.206-8-pae and 220.127.116.11-0.1-default
> > SUSE kernels)
> > - processor.max_cstate=1 works
Why does it work with 2.6.24 on kubuntu 8.04 ?
How does a 2.6.24/25/26 vanilla kernel behave on those systems ?
> > 00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2)
> Here is a dump from lspci.... looks completely different :-P and here i was
> blaming ATI :-)
> 00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge
Oh, that's a different beast, but it might be also a problem with the
timer interrupt routing.
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