On 19/09/18 02:42, Keith Packard wrote:
Troll Berserker <berserker.tr...@yandex.com> writes:
Hmm. I see that drmDropMaster became conditional:
if (!ms->fd_passed)
drmDropMaster(ms->fd);
That's actually a fix which is necessary so that the lessee doesn't give
away control of the whole device.
I've missed that drmSetMaster is also conditional now.
I was thinking that lessee has to perform drmSetMaster in order to use the FD.
Such an asymmetry between the Owner and Lessees seems unfortunate for me.
I was thinking that may be it is possible to implement a CUSE driver
to expose leased descriptors as /dev/dri/card* devices so that it
would be possible to run X server unmodified.
I suppose it could, but I'm not sure why you'd want to?
To pretend that there are multiple GPUs in a system to reuse multiseat setup
methods for the case of multiple GPUs.
Prolly CUSE method wouldn't work even if there was a symmetry, because seats
are defined in terms of /sys/devices, not /dev/dri/cards
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