Re: Understanding DMA/NoDMA options and fixes

From: Alan Cox (alan_at_lxorguk.ukuu.org.uk)
Date: 07/21/05

  • Next message: Philip Prindeville: "Re: More strangeness kernel-2.6.12-1.1372_FC3 update" 
    To: For users of Fedora Core releases <fedora-list@redhat.com>
Date: Thu, 21 Jul 2005 20:55:23 +0100

    On Llu, 2005-07-18 at 21:02 -0500, John Best wrote:
    > Are there jumpers on the IDE devices that should be looked
    > at/investigated? If I hooked up devices using Cable Select vs
    > physically jumpering devices to primary/secondary will it make any
    > difference? Can I tell which device or devices are responsible for the
    > DMA issues? Can I tell when buying or looking at a device whether it
    > supports the proper dma standards? Can I go to a web site or other
    > location to check for compatible dma devices?

    Its almost certainly a Linux problem, especially if it worked before
    FC3. There are afaik no devices sold today (or in recent history) with
    broken DMA. There are however limitations on some older controllers.
    Those limitations haven't mysteriously changed in FC3/4 however.

    Please file a bug and assign it to my work incarnation <alan@redhat...>.
    Include the controller in question, lspci -v output, the devices
    attached and dmesg output.

    Alan 

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  • Next message: Philip Prindeville: "Re: More strangeness kernel-2.6.12-1.1372_FC3 update"

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