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qemu/hw/vfio
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Avihai Horon bf7ef7a2da vfio/migration: Block VFIO migration with postcopy migration 
VFIO migration is not compatible with postcopy migration. A VFIO device
in the destination can't handle page faults for pages that have not been
sent yet.

Doing such migration will cause the VM to crash in the destination:

qemu-system-x86_64: VFIO_MAP_DMA failed: Bad address
qemu-system-x86_64: vfio_dma_map(0x55a28c7659d0, 0xc0000, 0xb000, 0x7f1b11a00000) = -14 (Bad address)
qemu: hardware error: vfio: DMA mapping failed, unable to continue

To prevent this, block VFIO migration with postcopy migration.

Reported-by: Yanghang Liu <yanghliu@redhat.com>
Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Tested-by: Yanghang Liu <yanghliu@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2023-09-11 08:34:06 +02:00
..
amd-xgbe.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ap.c s390x/ap: Wire up the device request notifier interface 2023-07-10 09:52:52 +02:00
calxeda-xgmac.c Include migration/vmstate.h less 2019-08-16 13:31:52 +02:00
ccw.c hw/vfio/ccw: Replace DO_UPCAST(VFIOCCWDevice) by VFIO_CCW() 2023-02-27 09:15:38 +01:00
common.c vfio/migration: Fail adding device with enable-migration=on and existing blocker 2023-09-11 08:34:06 +02:00
display.c *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
igd.c *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
Kconfig hw/vfio: Move the IGD quirk code to a separate file 2020-02-06 11:55:42 -07:00
meson.build vfio: Add migration region initialization and finalize function 2020-11-01 12:30:50 -07:00
migration.c vfio/migration: Block VFIO migration with postcopy migration 2023-09-11 08:34:06 +02:00
pci-quirks.c hw/vfio/pci-quirks: Sanitize capability pointer 2023-07-10 09:52:52 +02:00
pci.c vfio/pci: Enable AtomicOps completers on root ports 2023-07-10 09:52:52 +02:00
pci.h vfio/pci: Enable AtomicOps completers on root ports 2023-07-10 09:52:52 +02:00
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: Add P2P support for VFIO migration 2023-09-11 08:34:05 +02:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00