[lkml]   [2009]   [Dec]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [Fdutils] DMA cache consistency bug introduced in 2.6.28

    > > > 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?


    (cesky, pictures)

     \ /
      Last update: 2009-12-28 21:09    [W:0.018 / U:0.208 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site