>>> On 06.12.16 at 14:47, <jgr...@suse.com> wrote: > Today there is no way for a domain to obtain the number of entries of > the machine memory map returned by XENMEM_machine_memory_map hypercall. > > Modify the interface to return just the needed number of map entries > in case the buffer was specified as NULL. > > Signed-off-by: Juergen Gross <jgr...@suse.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> albeit I'd like to have at least one more REST maintainer's agreement that ... > --- a/xen/include/public/memory.h > +++ b/xen/include/public/memory.h > @@ -339,6 +339,8 @@ DEFINE_XEN_GUEST_HANDLE(xen_memory_map_t); > /* > * Returns the real physical memory map. Passes the same structure as > * XENMEM_memory_map. > + * Specifying buffer as NULL will return the number of entries required > + * to store the complete memory map. > * arg == addr of xen_memory_map_t. > */ > #define XENMEM_machine_memory_map 10 ... this slight behavioral change is fine to make. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
