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    SubjectRe: [openib-general] [PATCH 08/22] Generic ehca headers
    On Fri, Feb 17, 2006 at 04:57:23PM -0800, Roland Dreier wrote:
    > From: Roland Dreier <>
    > The defines of TRUE and FALSE look rather useless. Why are they needed?
    > What is struct ehca_cache for? It doesn't seem to be used anywhere.
    > ehca_kv_to_g() looks completely horrible. The whole idea of using
    > vmalloc()ed kernel memory to do DMA seems unacceptable to me.

    When you want to do scatter-gather dma on kernel-virtual contingous
    areas allocate the pages individually and map them into kva using
    vmap(). Then dma can be performed using dma_map_page, or in case
    you have lots of pages dma_map_sg after creating an S/G list.

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