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Re: [Xen-devel] x86 swiotlb questions
| To: | <Keir.Fraser@xxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] x86 swiotlb questions |
| From: | "Jan Beulich" <jbeulich@xxxxxxxxxx> |
| Date: | Wed, 03 Jan 2007 07:10:16 +0000 |
| Cc: | muli@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 02 Jan 2007 23:08:40 -0800 |
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| In-reply-to: | <C1BC56A5.6870%keir@xxxxxxxxxxxxx> |
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| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
>Here's a thought: if the highmem DMA requests come from *only* the blkdev >subsystem, then perhaps we could use its highmem bounce buffer (I think that >still exists?). Another, only partially related thought: The addition of KM_SWIOTLB is the only difference to native kmap_types.h. It would seem to me that, at the price of disabling interrupts around the use, it should be possible to replace that with KM_BOUNCE_READ and let go of the Xen specific header... Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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