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Re: [Xen-devel] passing hypercall parameters by pointer

On 19 Aug 2005, at 03:00, Jimi Xenidis wrote:

I believe a negotiated managment area that the application serializes
all arguements into to be a far better solution, the area can be of
arbitrary size and it the added complexity to the application is

Am I missing something?

This is the correct answer imo. get_pfn_list() needs to die anyway: there are better ways to get the list of mfns belonging to a guest (you can get the list back from increase_reservation, or you can map the guest's pfn->mfn map).

The current mlock() scheme in libxc is screwed anyway -- we mlock/munlock regions that may overlap at page granularity. Fixing this would lead naturally to a preallocation scheme.

 -- Keir

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