mirror of
https://gitlab.uni-freiburg.de/opensourcevdi/spice-protocol
synced 2025-12-28 08:01:23 +00:00
fbf2cfb145
related RHBZ: 688883
Guest initiated sleep looks like this:
Guest:
(0) stop putting new commands into the rings
(1) QXL_IO_FLUSH_SURFACES
qxl calls flush_surfaces(), spice-server flushes command rings and
renders all surfaces, thereby flushing state to device memory.
(2) QXL_IO_DESTROY_ALL_SURFACES
zap surfaces
(3) QXL_IO_FLUSH_RELEASE
push release queue head into the release ring, so the guest
will see it and can release everything.
(4) tell acpi to reset
Qemu:
(5) qxl_reset_handler
Guest:
(6) sends surface create commands
The QXL_IO_FLUSH_SURFACES is an optimization, to reduce vmexits. It is used to
flush both command rings and update all surfaces at once (equivalent to
UPDATE_AREA X NUM_ACTIVE_SURFACES)
destroy all surfaces to release resources but not destroy the guest side surfaces
get device to flush all server released resources to the release ring (could use multiple
calls to OOM - but this is not well defined, would need to loop)
After (1) there will be no memory allocated on the pci bars.
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|---|---|---|
| .. | ||
| barrier.h | ||
| controller_prot.h | ||
| end-packed.h | ||
| enums.h | ||
| error_codes.h | ||
| foreign_menu_prot.h | ||
| ipc_ring.h | ||
| macros.h | ||
| Makefile.am | ||
| protocol.h | ||
| qxl_dev.h | ||
| start-packed.h | ||
| stats.h | ||
| types.h | ||
| vd_agent.h | ||
| vdi_dev.h | ||