[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH RFC server 00/11] vfio-user server in QEMU
From: |
Jagannathan Raman |
Subject: |
[PATCH RFC server 00/11] vfio-user server in QEMU |
Date: |
Mon, 19 Jul 2021 16:00:02 -0400 |
Hi,
This series adds on to the following series from
Elena Ufimtseva <elena.ufimtseva@oracle.com>:
[PATCH RFC 00/19] vfio-user implementation
QEMU enabled out-of-process device emulation with multi-process [1].
multi-process used a custom protocol to interact between the client
and server, which is not desirable.
The vfio-user user protocol [2] implements a VFIO based mechanism to interact
between the client and server. Since VFIO is a well-established specification,
it is preferable in terms of maintenance. It makes sense for multi-process to
switch to the vfio-user protocol.
Nutanix implemented the vfio-user protocol in their libvfio-user library. The
source for this library is located below:
https://github.com/nutanix/libvfio-user
Elena previously sent the patches for the vfio-user client.
This series implements a vfio-user server for QEMU. It includes the
libvfio-user as a git submodule to QEMU, and builds it along with QEMU.
We would like to make the following notes:
- Some of the existing multi-process code would become obsolete, and would
need to be removed. This series does not remove them to keep the number
of patches to a minimum. We will address them subsequently.
- The libvfio-user library needs json-c package to build. It looks like the
GitLab CI images used for build test don't have this package. As such it
causes build failure.
The patches from both series are available in the following github repo:
https://github.com/oracle/qemu.git
The vfio-user-client-server branch provides the same patches along with a
python script (scripts/vfiouser-launcher.py) to launch the VM.
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>
We are looking forward to your comments and questions.
Thank you!
[1]: https://patchew.org/QEMU/20210210092628.193785-1-stefanha@redhat.com/
[2]:
https://patchwork.kernel.org/project/qemu-devel/patch/20210614104608.212276-1-thanos.makatos@nutanix.com/
Jagannathan Raman (11):
vfio-user: build library
vfio-user: define vfio-user object
vfio-user: instantiate vfio-user context
vfio-user: find and init PCI device
vfio-user: run vfio-user context
vfio-user: handle PCI config space accesses
vfio-user: handle DMA mappings
vfio-user: handle PCI BAR accesses
vfio-user: handle device interrupts
vfio-user: register handlers to facilitate migration
vfio-user: acceptance test
configure | 11 +
meson.build | 35 ++
qapi/qom.json | 20 +-
include/hw/remote/iohub.h | 2 +
migration/savevm.h | 2 +
hw/remote/iohub.c | 6 +
hw/remote/vfio-user-obj.c | 754 ++++++++++++++++++++++++++++++++++++++++++
migration/savevm.c | 63 ++++
.gitmodules | 3 +
MAINTAINERS | 9 +
hw/remote/meson.build | 3 +
hw/remote/trace-events | 10 +
libvfio-user | 1 +
tests/acceptance/vfio-user.py | 94 ++++++
14 files changed, 1011 insertions(+), 2 deletions(-)
create mode 100644 hw/remote/vfio-user-obj.c
create mode 160000 libvfio-user
create mode 100644 tests/acceptance/vfio-user.py
--
1.8.3.1
- [PATCH RFC 12/19] vfio-user: probe remote device's BARs, (continued)
- [PATCH RFC 15/19] vfio-user: vfio user device realize, Elena Ufimtseva, 2021/07/19
- [PATCH RFC 13/19] vfio-user: respond to remote DMA read/write requests, Elena Ufimtseva, 2021/07/19
- [PATCH RFC 18/19] vfio-user: migration support, Elena Ufimtseva, 2021/07/19
- [PATCH RFC 17/19] vfio-user: probe remote device ROM BAR, Elena Ufimtseva, 2021/07/19
- [PATCH RFC 19/19] vfio-user: add migration cli options and version negotiation, Elena Ufimtseva, 2021/07/19
- [PATCH RFC 16/19] vfio-user: pci reset, Elena Ufimtseva, 2021/07/19
- [PATCH RFC server 00/11] vfio-user server in QEMU,
Jagannathan Raman <=
- [PATCH RFC server 07/11] vfio-user: handle DMA mappings, Jagannathan Raman, 2021/07/19
- [PATCH RFC server 08/11] vfio-user: handle PCI BAR accesses, Jagannathan Raman, 2021/07/19
- [PATCH RFC server 10/11] vfio-user: register handlers to facilitate migration, Jagannathan Raman, 2021/07/19
- [PATCH RFC server 09/11] vfio-user: handle device interrupts, Jagannathan Raman, 2021/07/19
- [PATCH RFC server 11/11] vfio-user: acceptance test, Jagannathan Raman, 2021/07/19
- [PATCH RFC server 01/11] vfio-user: build library, Jagannathan Raman, 2021/07/19