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Re: [Xen-devel] [RFC PATCH V3 15/16] netfront: multi page ring support.

On Tue, 2012-01-31 at 09:53 +0000, Jan Beulich wrote:
> > with more than 4GB?
> Imo the use of the DMA API is a mistake here anyway. There's no need
> for anything to be contiguous in a PV frontend/backend handshake
> protocol, or if one finds there is it's very likely just because of trying to
> avoid doing something properly.

Seems you're right. I look at the backend code again, I make use of 
vm_struct to create a contiguous area in backend kernel. In fact I can
avoid DMA API completely. ;-)


> Jan

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