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Re: [Xen-devel] Add multi-page shared ring support to xen-blkfront/back

On Tue, Jan 12, 2010 at 05:51:42PM +0000, Paul Durrant wrote:
> Paul Durrant wrote:
> >These patches add support for multi-page shared rings to xen-blkfront/back.
> >Shared rings must always be a power of 2 in size and so the size is 
> >controlled
> >by the new 'max_ring_page_order' module parameter of xen-blkback. This 
> >defaults
> >to 0 so operationally there should be no difference with these patches in 
> >place.
> >The maximum value of 'max_ring_page_order' is currently limited to 2
> >(i.e. 4 pages).
> >xen-blkfront will always use the largest shared ring size supported by the 
> >back
> >end. To override this and continue to use a single page ring, as before, set 
> >the
> >'allow_multi_page_ring' module parameter to 0.

Hey Paul,

Would it be possible to rebase this on 3.0? How is it different from the
one posted some time ago by .. um, somebody else?

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