Re: [Xen-devel] [PATCH] Use lib/swiotlb code for x86_64 SWIOTLB

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 15/2/07 22:59, "Langsdorf, Mark" <mark.langsdorf@xxxxxxx> wrote:

> As part of my efforts to enable GART/IOMMU on x86_64,
> I switch from using arch/i386/swiotlb-xen.c for the
> SWIOTLB implementation to lib/swiotlb-xen.c for x86_64
> processors.
> 
> After this patch is accepted, I'll submit the patch to
> enable the GART/IOMMU.
> 
> Signed-off-by: Mark Langsdorf <mark.langsdorf@xxxxxxx>

Jan has been through the swiotlb code recently so may have an opinion on
this patch. Using the common swiotlb code (as far as possible) for x86/64
may make sense -- many of the nasty differences in our own swiotlb
implementation are to deal with CONFIG_HIGHMEM which does not exist on
x86/64.

 -- Keir



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