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    SubjectRe: [PATCH 4/4] ARM: remove consistent dma region and use common vmalloc range for dma allocations
    On Fri, Apr 13, 2012 at 04:05:50PM +0200, Marek Szyprowski wrote:
    > This patch changes dma-mapping subsystem to use generic vmalloc areas
    > for all consistent dma allocations. This increases the total size limit
    > of the consistent allocations and removes platform hacks and a lot of
    > duplicated code.

    NAK. I don't think you appreciate the contexts from which the dma coherent
    code can be called from, and the reason why we pre-allocate the page
    tables (so that IRQ-based allocations work.)

    The vmalloc region doesn't allow that because page tables are allocated
    using GFP_KERNEL not GFP_ATOMIC.


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      Last update: 2012-04-13 20:41    [W:0.020 / U:34.000 seconds]
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