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xen-devel
Re: [Xen-devel] [PATCH] Paging and memory sharing for HVM guests
Jan Beulich wrote:
Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 17.12.09 17:38 >>>
1). The "*mfnp |= 0x80000000U;" and "*mfnp |= 0xf0000000U;" should
use a #define. Maybe copy over the #defines from the xen tree ?
Did you find any defines in the tools sources for that? The only place I
found this condition being checked at all was in xc_map_foreign_pages(),
where it used hard-coded values. Or are you referring to the
XEN_DOMCTL_PFINFO_* values? I'd say they're being mis-used when
applied to the mfn array used by mmap-batch (including apparent
pre-existing uses).
I think many people agree that this idea of using 0xf0000000 is a very
inelegant solution (myself included). Maybe now would be a good time to
hash out what the proper way to deal with this is. I think this discussion
should extend to the privcmd/libxc mmap interfaces generally as well.
Patrick
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