The grant is always 4KB irrespectively of the page granularity of the guest.
Signed-off-by: Julien Grall <julien.gr...@citrix.com> --- Cc: Ian Campbell <ian.campb...@citrix.com> Cc: Ian Jackson <ian.jack...@eu.citrix.com> Cc: Jan Beulich <jbeul...@suse.com> Cc: Keir Fraser <k...@xen.org> Cc: Tim Deegan <t...@xen.org> --- xen/include/public/grant_table.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/xen/include/public/grant_table.h b/xen/include/public/grant_table.h index e9393fd..67a250d 100644 --- a/xen/include/public/grant_table.h +++ b/xen/include/public/grant_table.h @@ -51,6 +51,11 @@ * know the real machine address of a page it is sharing. This makes * it possible to share memory correctly with domains running in * fully virtualised memory. + * + * The size of a grant is always 4KB irrespectively of the page + * granularity of the guest. This is means that when the guest is using + * 64KB page granularity, it will have to split the page in 4KB chunks + * and request a grant for every of them. */ /*********************************** -- 2.1.4 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
