xemu/hw/vfio
Avihai Horon 31bcbbb5be vfio/migration: Implement VFIO migration protocol v2
Implement the basic mandatory part of VFIO migration protocol v2.
This includes all functionality that is necessary to support
VFIO_MIGRATION_STOP_COPY part of the v2 protocol.

The two protocols, v1 and v2, will co-exist and in the following patches
v1 protocol code will be removed.

There are several main differences between v1 and v2 protocols:
- VFIO device state is now represented as a finite state machine instead
  of a bitmap.

- Migration interface with kernel is now done using VFIO_DEVICE_FEATURE
  ioctl and normal read() and write() instead of the migration region.

- Pre-copy is made optional in v2 protocol. Support for pre-copy will be
  added later on.

Detailed information about VFIO migration protocol v2 and its difference
compared to v1 protocol can be found here [1].

[1]
https://lore.kernel.org/all/20220224142024.147653-10-yishaih@nvidia.com/

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>.
Link: https://lore.kernel.org/r/20230216143630.25610-9-avihaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-02-16 12:13:46 -07:00
..
Kconfig hw/vfio: Move the IGD quirk code to a separate file 2020-02-06 11:55:42 -07:00
amd-xgbe.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ap.c target/s390x: move kvm files into kvm/ 2021-07-07 14:01:59 +02:00
calxeda-xgmac.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ccw.c vfio-ccw: forward halt/clear errors 2021-09-06 16:22:54 +02:00
common.c vfio/migration: Implement VFIO migration protocol v2 2023-02-16 12:13:46 -07:00
display.c ui/console: Do not return a value with ui_info 2022-06-14 10:34:37 +02:00
igd.c Mark remaining global TypeInfo instances as const 2022-02-21 13:30:20 +00:00
meson.build vfio: Add migration region initialization and finalize function 2020-11-01 12:30:50 -07:00
migration.c vfio/migration: Implement VFIO migration protocol v2 2023-02-16 12:13:46 -07:00
pci-quirks.c hw/vfio/pci-quirks: Resolve redundant property getters 2022-05-24 10:38:50 +10:00
pci.c vfio/pci: Use vbasedev local variable in vfio_realize() 2022-05-06 09:06:50 -06:00
pci.h include/hw/pci: Split pci_device.h off pci.h 2023-01-08 01:54:22 -05:00
platform.c Use g_new() & friends where that makes obvious sense 2022-03-21 15:44:44 +01:00
spapr.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
trace-events vfio/migration: Implement VFIO migration protocol v2 2023-02-16 12:13:46 -07:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00