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    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


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      Last update: 2009-12-28 21:57    [W:0.048 / U:36.308 seconds]
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