From: Elena Ufimtseva <elena.ufimtseva@oracle.com>
To: qemu-devel@nongnu.org
Cc: elena.ufimtseva@oracle.com, john.g.johnson@oracle.com,
jag.raman@oracle.com, swapnil.ingle@nutanix.com,
john.levon@nutanix.com, alex.williamson@redhat.com,
stefanha@redhat.com
Subject: [PATCH RFC 00/19] vfio-user implementation
Date: Sun, 18 Jul 2021 23:27:39 -0700 [thread overview]
Message-ID: <cover.1626675354.git.elena.ufimtseva@oracle.com> (raw)
Hi
We are happy to introduce the next stage of the multi-process QEMU project[1].
vfio-user is a protocol that allows a device to be emulated in a separate
process outside of QEMU. It encapsulates the messages sent from QEMU to the
kernel VFIO driver, and sends them to a remote process over a UNIX socket.
The vfio-user framework consists of 3 parts:
1) The protocol specification.
2) A server - the VFIO generic device in QEMU that exchanges the protocol messages with the client.
3) A client - remote process that emulates a device.
This patchset implements parts 1 and 2.
The protocol's specification can be found here [2]:
We also include this as the first patch of the series.
The libvfio-user project (https://github.com/nutanix/libvfio-user)
can be used by a remote process to handle the protocol to implement the
third part.
We also worked on implementing a client and will be sending this patch
series shortly.
Contributors:
John G Johnson <john.g.johnson@oracle.com>
John Levon <john.levon@nutanix.com>
Thanos Makatos <thanos.makatos@nutanix.com>
Elena Ufimtseva <elena.ufimtseva@oracle.com>
Jagannathan Raman <jag.raman@oracle.com>
Please send your comments and questions!
Thank you.
References:
[1] https://wiki.qemu.org/Features/MultiProcessQEMU
[2] https://patchwork.kernel.org/project/qemu-devel/patch/20210614104608.212276-1-thanos.makatos@nutanix.com/
John G Johnson (18):
vfio-user: add VFIO base abstract class
vfio-user: define VFIO Proxy and communication functions
vfio-user: Define type vfio_user_pci_dev_info
vfio-user: connect vfio proxy to remote server
vfio-user: negotiate protocol with remote server
vfio-user: define vfio-user pci ops
vfio-user: VFIO container setup & teardown
vfio-user: get device info and get irq info
vfio-user: device region read/write
vfio-user: get region and DMA map/unmap operations
vfio-user: probe remote device's BARs
vfio-user: respond to remote DMA read/write requests
vfio_user: setup MSI/X interrupts and PCI config operations
vfio-user: vfio user device realize
vfio-user: pci reset
vfio-user: probe remote device ROM BAR
vfio-user: migration support
vfio-user: add migration cli options and version negotiation
Thanos Makatos (1):
vfio-user: introduce vfio-user protocol specification
docs/devel/index.rst | 1 +
docs/devel/vfio-user.rst | 1809 +++++++++++++++++++++++++++++++++
hw/vfio/pci.h | 25 +-
hw/vfio/user.h | 279 +++++
include/hw/vfio/vfio-common.h | 8 +
hw/vfio/common.c | 273 ++++-
hw/vfio/migration.c | 35 +-
hw/vfio/pci.c | 547 ++++++++--
hw/vfio/user.c | 997 ++++++++++++++++++
MAINTAINERS | 10 +
hw/vfio/meson.build | 1 +
11 files changed, 3879 insertions(+), 106 deletions(-)
create mode 100644 docs/devel/vfio-user.rst
create mode 100644 hw/vfio/user.h
create mode 100644 hw/vfio/user.c
--
2.25.1
next reply other threads:[~2021-07-19 6:37 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-19 6:27 Elena Ufimtseva [this message]
2021-07-19 6:27 ` [PATCH RFC 01/19] vfio-user: introduce vfio-user protocol specification Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 02/19] vfio-user: add VFIO base abstract class Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 03/19] vfio-user: define VFIO Proxy and communication functions Elena Ufimtseva
2021-07-27 16:34 ` Stefan Hajnoczi
2021-07-28 18:08 ` John Johnson
2021-07-29 8:06 ` Stefan Hajnoczi
2021-07-19 6:27 ` [PATCH RFC 04/19] vfio-user: Define type vfio_user_pci_dev_info Elena Ufimtseva
2021-07-28 10:16 ` Stefan Hajnoczi
2021-07-29 0:55 ` John Johnson
2021-07-29 8:22 ` Stefan Hajnoczi
2021-07-19 6:27 ` [PATCH RFC 05/19] vfio-user: connect vfio proxy to remote server Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 06/19] vfio-user: negotiate protocol with " Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 07/19] vfio-user: define vfio-user pci ops Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 08/19] vfio-user: VFIO container setup & teardown Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 09/19] vfio-user: get device info and get irq info Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 10/19] vfio-user: device region read/write Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 11/19] vfio-user: get region and DMA map/unmap operations Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 12/19] vfio-user: probe remote device's BARs Elena Ufimtseva
2021-07-19 22:59 ` Alex Williamson
2021-07-20 1:39 ` John Johnson
2021-07-20 3:01 ` Alex Williamson
2021-07-19 6:27 ` [PATCH RFC 13/19] vfio-user: respond to remote DMA read/write requests Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 14/19] vfio_user: setup MSI/X interrupts and PCI config operations Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 15/19] vfio-user: vfio user device realize Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 16/19] vfio-user: pci reset Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 17/19] vfio-user: probe remote device ROM BAR Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 18/19] vfio-user: migration support Elena Ufimtseva
2021-07-19 6:27 ` [PATCH RFC 19/19] vfio-user: add migration cli options and version negotiation Elena Ufimtseva
2021-07-19 20:00 ` [PATCH RFC server 00/11] vfio-user server in QEMU Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 01/11] vfio-user: build library Jagannathan Raman
2021-07-19 20:24 ` John Levon
2021-07-20 12:06 ` Jag Raman
2021-07-20 12:20 ` Marc-André Lureau
2021-07-20 13:09 ` John Levon
2021-07-19 20:00 ` [PATCH RFC server 02/11] vfio-user: define vfio-user object Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 03/11] vfio-user: instantiate vfio-user context Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 04/11] vfio-user: find and init PCI device Jagannathan Raman
2021-07-26 15:05 ` John Levon
2021-07-28 17:08 ` Jag Raman
2021-07-19 20:00 ` [PATCH RFC server 05/11] vfio-user: run vfio-user context Jagannathan Raman
2021-07-20 14:17 ` Thanos Makatos
2021-08-13 14:51 ` Jag Raman
2021-08-16 12:52 ` John Levon
2021-08-16 14:10 ` Jag Raman
2021-07-19 20:00 ` [PATCH RFC server 06/11] vfio-user: handle PCI config space accesses Jagannathan Raman
2021-07-26 15:10 ` John Levon
2021-07-19 20:00 ` [PATCH RFC server 07/11] vfio-user: handle DMA mappings Jagannathan Raman
2021-07-20 14:38 ` Thanos Makatos
2021-07-19 20:00 ` [PATCH RFC server 08/11] vfio-user: handle PCI BAR accesses Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 09/11] vfio-user: handle device interrupts Jagannathan Raman
2021-07-19 20:00 ` [PATCH RFC server 10/11] vfio-user: register handlers to facilitate migration Jagannathan Raman
2021-07-20 14:05 ` Thanos Makatos
2021-07-19 20:00 ` [PATCH RFC server 11/11] vfio-user: acceptance test Jagannathan Raman
2021-07-20 16:12 ` Thanos Makatos
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