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94f775e428
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Avihai Horon 94f775e428 vfio/migration: Add P2P support for VFIO migration 
VFIO migration uAPI defines an optional intermediate P2P quiescent
state. While in the P2P quiescent state, P2P DMA transactions cannot be
initiated by the device, but the device can respond to incoming ones.
Additionally, all outstanding P2P transactions are guaranteed to have
been completed by the time the device enters this state.

The purpose of this state is to support migration of multiple devices
that might do P2P transactions between themselves.

Add support for P2P migration by transitioning all the devices to the
P2P quiescent state before stopping or starting the devices. Use the new
VMChangeStateHandler prepare_cb to achieve that behavior.

This will allow migration of multiple VFIO devices if all of them
support P2P migration.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Tested-by: YangHang Liu <yanghliu@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2023-09-11 08:34:05 +02:00
..
9pfs hw/9pfs: spelling fixes 2023-07-25 17:15:47 +03:00
acpi hw/acpi: Fix PM control register access 2023-06-26 09:49:24 -04:00
adc meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
alpha hw/alpha: Use MachineClass->default_nic in the alpha machine 2023-05-26 09:10:49 +02:00
arm hw/sd: Introduce a "sd-card" SPI variant model 2023-09-01 11:40:04 +02:00
audio audio: spelling fixes 2023-09-08 13:08:52 +03:00
avr Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
block m25p80: Introduce an helper to retrieve the BlockBackend of a device 2023-09-01 11:40:04 +02:00
char hw/char/pl011: Replace magic values by register field definitions 2023-08-31 19:47:43 +02:00
core qdev: Add qdev_add_vm_change_state_handler_full() 2023-09-11 08:34:05 +02:00
cpu meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
cris Do not include exec/address-spaces.h if it's not really necessary 2021-05-02 17:24:51 +02:00
cxl hw/cxl/events: Add event interrupt support 2023-06-22 18:55:14 -04:00
display qxl: don't assert() if device isn't yet initialized 2023-09-08 13:08:52 +03:00
dma hw/dma/etraxfs: Include missing 'exec/memory.h' header 2023-08-31 19:47:43 +02:00
gpio hw/gpio/nrf51: implement DETECT signal 2023-08-22 17:30:59 +01:00
hppa target/hppa: Provide qemu version via fw_cfg to firmware 2023-06-24 13:39:48 +02:00
hyperv win32: replace closesocket() with close() wrapper 2023-03-13 15:39:31 +04:00
i2c aspeed queue: 2023-09-06 11:14:55 -04:00
i386 * only build util/async-teardown.c when system build is requested 2023-09-07 10:29:06 -04:00
ide hw/ide/ahci: fix broken SError handling 2023-09-06 22:48:04 -04:00
input vhost-user: fully use new backend/frontend naming 2023-06-26 09:50:00 -04:00
intc ppc/xive: Add support for the PC MMIOs 2023-09-06 11:19:33 +02:00
ipack meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
ipmi meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
isa hw/isa/vt82c686: Remove via_isa_set_irq() 2023-07-11 00:11:25 +02:00
loongarch hw/loongarch: Fix ACPI processor id off-by-one error 2023-08-24 16:58:16 +08:00
m68k hw: Add compat machines for 8.2 2023-08-23 12:06:39 +02:00
mem memory-device: Track used region size in DeviceMemoryState 2023-07-12 09:25:37 +02:00
microblaze trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value 2023-09-08 13:08:52 +03:00
mips trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value 2023-09-08 13:08:52 +03:00
misc Add i.MX7 SRC device implementation 2023-08-31 09:45:17 +01:00
net hw/net/vmxnet3: Fix guest-triggerable assert() 2023-09-08 13:08:52 +03:00
nios2 trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value 2023-09-08 13:08:52 +03:00
nubus trace-events: Fix the name of the tracing.rst file 2023-09-08 13:08:51 +03:00
nvme hw/nvme: fix null pointer access in ruh update 2023-08-09 15:32:32 +02:00
nvram hw/nvram: Avoid unnecessary Xilinx eFuse backstore write 2023-07-17 11:05:52 +01:00
openrisc *: Add missing includes of qemu/error-report.h 2023-03-22 15:06:57 +00:00
pci pci: Fix the update of interrupt disable bit in PCI_COMMAND register 2023-08-11 12:15:24 -04:00
pci-bridge hw/pci-bridge/cxl_upstream.c: Use g_new0() in build_cdat_table() 2023-08-03 16:06:49 -04:00
pci-host hw/pci-host: Allow extended config space access for Designware PCIe host 2023-08-11 12:15:24 -04:00
pcmcia meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
ppc hw/ppc: use g_free() in spapr_tce_table_post_load() 2023-09-08 13:08:52 +03:00
rdma meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
remote exec/memory: Add symbol for memory listener priority for device backend 2023-06-28 14:27:59 +02:00
riscv riscv: spelling fixes 2023-09-08 13:08:52 +03:00
rtc hw/rtc/aspeed_rtc: Use 64-bit offset for holding time_t difference 2023-08-31 09:45:18 +01:00
rx bulk: Remove pointless QOM casts 2023-06-05 20:48:34 +02:00
s390x hw/s390x/s390-virtio-ccw: Remove superfluous code to set the NIC model 2023-08-23 12:06:44 +02:00
scsi scsi: clear unit attention only for REPORT LUNS commands 2023-07-14 11:10:58 +02:00
sd aspeed queue: 2023-09-06 11:14:55 -04:00
sensor hw/i2c: spelling fixes 2023-08-31 19:47:43 +02:00
sh4 hw/sh4: Use MachineClass->default_nic in the sh4 r2d machine 2023-05-22 09:44:48 +02:00
smbios hw/smbios: Fix core count in type4 2023-07-10 16:17:08 -04:00
sparc other architectures: spelling fixes 2023-07-25 17:14:07 +03:00
sparc64 hw/pci/pci: Remove multifunction parameter from pci_new_multifunction() 2023-07-10 18:59:32 -04:00
ssi hw/ssi: Check for duplicate CS indexes 2023-09-01 11:40:04 +02:00
timer meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
tpm hw/tpm: TIS on sysbus: Remove unsupport ppi command line option 2023-07-14 11:31:54 -04:00
tricore hw/tricore: fix inclusion of tricore_testboard 2021-07-20 20:10:21 +02:00
ufs hw/ufs: Support for UFS logical unit 2023-09-07 14:01:29 -04:00
usb hw/usb/hcd-xhci: Avoid variable-length array in xhci_get_port_bandwidth() 2023-08-31 19:47:43 +02:00
vfio vfio/migration: Add P2P support for VFIO migration 2023-09-11 08:34:05 +02:00
virtio virtio-crypto: verify src&dst buffer length for sym request 2023-08-03 16:16:17 -04:00
watchdog meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
xen xen: spelling fix 2023-09-08 13:08:52 +03:00
xenpv hw/xenpv: Initialize Xen backend operations 2023-03-24 14:52:14 +00:00
xtensa trivial: Simplify the spots that use TARGET_BIG_ENDIAN as a numeric value 2023-09-08 13:08:52 +03:00
Kconfig hw/ufs: Initial commit for emulated Universal-Flash-Storage 2023-09-07 14:01:29 -04:00
meson.build hw/ufs: Initial commit for emulated Universal-Flash-Storage 2023-09-07 14:01:29 -04:00