Demi Marie Obenour 164666fa66 Improve docs for IOCTL_GNTDEV_MAP_GRANT_REF ... --------------cKY3Ggs6VDUCSn4I6iN78sHA Content-Type: multipart/mixed; boundary="------------g0T69ASidFiPhh4eOY4XzIg1" --------------g0T69ASidFiPhh4eOY4XzIg1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable The current implementation of gntdev guarantees that the first call to IOCTL_GNTDEV_MAP_GRANT_REF will set @index to 0. This is required to use gntdev for Wayland, which is a future desire of Qubes OS. Additionally, requesting zero grants results in an error, but this was not documented either. Document both of these. Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/f66c5a4e-2034-00b5-a635-6983bd999c07@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com>		2022-02-03 08:23:32 +01:00
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evtchn.h	License cleanup: add SPDX license identifier to uapi header files with a license	2017-11-02 11:20:11 +01:00
gntalloc.h	xen/gntalloc: use types from linux/types.h in userspace headers	2015-10-23 14:20:44 +01:00
gntdev.h	Improve docs for IOCTL_GNTDEV_MAP_GRANT_REF	2022-02-03 08:23:32 +01:00
privcmd.h	xen/privcmd: add IOCTL_PRIVCMD_MMAP_RESOURCE	2018-05-14 15:25:37 +02:00