On Wed, 29 Mar 2017, Jan Beulich wrote: > >>> On 29.03.17 at 00:08, <sstabell...@kernel.org> wrote: > > --- a/xen/include/public/io/ring.h > > +++ b/xen/include/public/io/ring.h > > @@ -27,6 +27,21 @@ > > #ifndef __XEN_PUBLIC_IO_RING_H__ > > #define __XEN_PUBLIC_IO_RING_H__ > > > > +/* > > + * When #include'ing this header, you need to provide the following > > + * declaration upfront: > > + * - standard integers types (uint8_t, uint16_t, etc) > > + * They are provided by stdint.h of the standard headers. > > + * > > + * In addition, if you intend to use the FLEX macros, you also need to > > + * provide: > > + * - size_t > > + * - memcpy > > + * - grant_ref_t > > + * These declarations are provided by string.h of the standard headers, > > + * and grant_table.h from the Xen public headers. > > + */ > > Btw, there's another difference only implied so far: The integer > types indeed need to be made available up front (as spelled out). > The others can as well be made available after ring.h inclusion, > as long as that happens before invoking any of the macros.
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