Re: [Xen-devel] [PATCH for-4.6] xen/public: arm: Use __typeof__ rather than typeof

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Wed, 28 Oct 2015, Jan Beulich wrote:
> >>> On 28.10.15 at 16:44, <julien.grall@xxxxxxxxxx> wrote:
> > On 27/10/15 08:05, Jan Beulich wrote:
> >>>>> On 26.10.15 at 19:08, <julien.grall@xxxxxxxxxx> wrote:
> >>> However, IIUC, the get_xen_guest_handle is only exposed to the tools and
> >>> therefore possible to modify it in order to pass the type. Am I wrong?
> >>> FWIW, I haven't seen any usage in the tools directory.
> >> 
> >> Indeed. Rather than worrying about getting it right, let's just drop it.
> >> Patch sent a minute ago.
> > 
> > On the same note, is there any reason we want to expose
> > XEN_GUEST_HANDLE_PARAM to the guest?
> > 
> > It has been introduced with ARM to represent a guest pointer as an
> > hypercall pointer and only used within Xen to differentiate 32bit vs
> > 64bit build.
> 
> I don't see a need for it to be exposed, but I'd like the ARM folks
> who introduced it (Stefano iirc) confirm that.
 
Indeed, it should only be used within the hypervisor.

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