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| author | Demi Marie Obenour <demiobenour@gmail.com> | 2022-01-31 12:23:07 -0500 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-02-03 08:23:32 +0100 |
| commit | 164666fa66669d437bdcc8d5f1744a2aee73be41 (patch) | |
| tree | fbf92095acdeaf34419af1f4501500cb152a4ce6 /Documentation | |
| parent | 4564661af6ee321942ec1ab012191d7adedd3e00 (diff) | |
Improve docs for IOCTL_GNTDEV_MAP_GRANT_REF
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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>
Diffstat (limited to 'Documentation')
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