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Re: [Xen-devel] [PATCH] x86/dmop: Fix compat_dm_op() ABI

>>> On 31.01.17 at 20:59, <andrew.cooper3@xxxxxxxxxx> wrote:
> What is the pupose of COMPAT_HANDLE_PARAM()? It is a packed structure of one
> and a half pointers, so isn't safe at all for use in the hypercall function
> APIs (depsite its naming making it look deceptively like it is the correct
> thing to use).

Btw, where are you taking this "one and a half pointers" from?
It's half a pointer (a compat one) plus a zero sized array.


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