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Re: [Xen-devel] Multiple-page mem_event ring buffer?

Could I safely use more than one page for the ring buffer (passing '2'
as the last parameter of xc_map_foreign_batch(), and so on), or am I
limited to 1 page by design?

You would have to change Xen itself to also view the N pages as a contiguous 
region in the virtual address space. I think vmap has been recently added for 
that purpose, but I know nothing about its limitations (cc'ing Jan).

You would also want to retain the old interface and add a new domctl for N-page 
ring setup. And some refactoring of all the places where that sequence of calls 
needed for setup is repeated. And a pony ;)

Ah, that's what I thought. Will ask management to budget for the pony :)

Razvan Cojocaru

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