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    SubjectRe: que: How can we Eliminate the DMA Zone from the kernel?
    On Thu, 25 Jan 2007 10:35:10 -0500 Kyle McMartin wrote:

    > On Thu, Jan 25, 2007 at 12:56:30PM +0000, Seetharam Dharmosoth wrote:
    > > Hi,
    > >
    > > Want to remove DMA zone the from the Linux Kernel.
    > > (Don't want to use DMA Zone, because i am not
    > > using ISA bus, am using PCI bus. So, I don't need
    > > this)
    > >
    >
    > Just because you don't need ISA, doesn't mean you don't need
    > ZONE_DMA. Various PCI cards have limitations on what addresses they
    > can DMA to (24 bits on some old PCI sound cards iirc, and more recently
    > a 30 bit DMA limitation on some Broadcom networking equipment.)

    If your platform really doesn't need ZONE_DMA, then you should
    look at lots of discussion and patches on the linux-mm
    mailing list.

    See http://linux-mm.org/LinuxKernelMailingLists
    and emails or patches from Christoph Lameter, Andi Kleen,
    and Marcelo Tosatti.

    ---
    ~Randy
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