Re: [Xen-devel] USB virt status --- Help please!!!

[Muli Ben-Yehuda <mulix@xxxxxxxxx>]

On Mon, Nov 14, 2005 at 01:50:39PM -0500, Stephen C. Tweedie wrote:

> The alloc_skb is just avoiding one special case of this.  It's an
> important special case, sure, but to be robust, might we not want to
> have a minimal swiotlb cache available at all times as fallback?

I think we certainly do. swiotlb will already avoid bouncing where
possible via the checks for address_needs_mapping(). Is swiotlb
prohibitively expensive even when no bouncing is necessary? if yes, we
could either trim it down or just use it selectively as I outlined
earlier on a per bus / device / subsystem basis.

Cheers,
Muli
-- 
Muli Ben-Yehuda
http://www.mulix.org | http://mulix.livejournal.com/


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