lkml.org 
[lkml]   [2009]   [Dec]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Fdutils] DMA cache consistency bug introduced in 2.6.28
On 12/27/2009 06:09 AM, Pavel Machek wrote:
>
>>>> This might suggest that Mark's floppy controller doesn't like
>>>> deep C? Mark, did you try booting with processor.max_cstate=1
>>>> and HPET enabled?
>>>
>>> We have indeed had historical issues with floppy and sleep states before.
>>
>> I removed that code when moving to 64bit (floppy driver disabling C1),
>> but perhaps we need some variant of it again (but it's the first such
>> report in many years). Although it would be sad to have it again on all
>> systems.
>
> C1 is hlt. Are you sure? I could see how C3 could cause problems (DMA
> latency), but...
>
> Can mark simply try with idle=poll?
>
> Pavel
>

The floppy still fails with idle=poll

Mark


\
 
 \ /
  Last update: 2009-12-28 21:57    [W:0.472 / U:0.492 seconds]
©2003-2011 Jasper Spaans. Advertise on this site