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    SubjectRe: how to get virtual address from dma address
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       From: "BALBIR SINGH" <balbir.singh@wipro.com>
    Date: Thu, 04 Oct 2001 15:41:08 +0530

    With Rik's reverse mapping patch, wouldn't we have the virtual address for the given
    physical address ? I have no clue about how the patch works, somebody willing to explain
    it?

    Rik's work is for user process PTEs, we're talking about IOMMU PTEs on
    PCI controllers used to map the 32-bit PCI address space to the (often
    larger) physical address space of main memory.

    These two PTE types are totally unrelated.

    Franks a lot,
    David S. Miller
    davem@redhat.com
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