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[Xen-devel] Re: [ofa-general] mthca use of dma_sync_single is bogus
| To: | Roland Dreier <rdreier@xxxxxxxxx>, <mst@xxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: [ofa-general] mthca use of dma_sync_single is bogus |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Mon, 09 Jul 2007 22:36:42 +0100 |
| Cc: | Lukas Hejtmanek <xhejtman@xxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, general@xxxxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Mon, 09 Jul 2007 14:31:29 -0700 |
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| In-reply-to: | <ada8x9pxo3f.fsf@xxxxxxxxx> |
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| Thread-topic: | [ofa-general] mthca use of dma_sync_single is bogus |
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On 9/7/07 22:29, "Roland Dreier" <rdreier@xxxxxxxxx> wrote:
> Unfortunately it seems like the kernel's swiotlb does not implement
> the full DMA API so this won't actually fix Xen :(.
It implements the sync_single_range_for_{cpu,device} functions.
But we use our own swiotlb implementation anyway. arch/i386/kernel/swiotlb.c
in a Xen-patched tree is used by both i386/xen and x64/xen. We haven't yet
merged with main lib/swiotlb.c.
-- Keir
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