Re: [Xen-merge] [PATCH] move i386's swiotlb.h

[Muli Ben-Yehuda <mulix@xxxxxxxxx>]

On Fri, Dec 23, 2005 at 01:34:51PM +0100, Vincent Hanquez wrote:
> On Fri, Dec 23, 2005 at 01:27:22PM +0100, Jan Beulich wrote:
> > Subject says it all.
> 
> > Index: 2005-12-16/include/asm-i386/mach-xen/asm/swiotlb.h
> > ===================================================================
> > --- 2005-12-16.orig/include/asm-i386/mach-xen/asm/swiotlb.h 2005-11-21 
> > 16:42:07.000000000 +0100
> > +++ /dev/null       1970-01-01 00:00:00.000000000 +0000
> 
> isn't the swiotlb was suppose to move to lib/ and be available to almost
> all arch ? IIRC there was talk to do that on the LKML (well at least
> powerpc is trying to add it).

There are several relevant things in progress here:

- in 2.6.15, swiotlb.c is available under lib/ for both x86-64 and
IA64. Unfortunately Xen's swiotlb.c is quite different.

- in 2.6.16 (I hope), swiotlb.h will be moved to asm-generic. This is
a patch that's in -mm at the moment. There's no reason Xen couldn't
use this header file.

- there's a patch in Andi Kleen's queue to make multiple IOMMU's
usable for x86-64 relatively cleanly (the dma-mapping-ops patch). This
will make it slighly cleaner to support Xen's copy of swiotlb.c. 

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


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