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[PATCH v2 0/6] Support exporting BDSs via VDUSE
From: |
Xie Yongji |
Subject: |
[PATCH v2 0/6] Support exporting BDSs via VDUSE |
Date: |
Tue, 15 Feb 2022 18:59:37 +0800 |
Hi all,
Last few months ago, VDUSE (vDPA Device in Userspace) [1] has
been merged into Linux kernel as a framework that make it
possible to emulate a vDPA device in userspace. This series
aimed at implementing a VDUSE block backend based on the
qemu-storage-daemon infrastructure.
To support that, we firstly introduce a VDUSE library as a
subproject (like what libvhost-user does) to help implementing
VDUSE backends in QEMU. Then a VDUSE block export is implemented
based on this library. At last, we add resize and reconnect support
to the VDUSE block export and VDUSE library.
Since we don't support vdpa-blk in QEMU currently, the VM case is
tested with my previous patchset [2].
[1] https://www.kernel.org/doc/html/latest/userspace-api/vduse.html
[2] https://www.mail-archive.com/qemu-devel@nongnu.org/msg797569.html
Please review, thanks!
V1 to V2:
- Move vduse header to linux-headers [Stefan]
- Add two new API to support creating device from /dev/vduse/$NAME or
file descriptor [Stefan]
- Check VIRTIO_F_VERSION_1 during intialization [Stefan]
- Replace malloc() + memset to calloc() [Stefan]
- Increase default queue size to 256 for vduse-blk [Stefan]
- Zero-initialize virtio-blk config space [Stefan]
- Add a patch to support reset blk->dev_ops
- Validate vq->log->inflight fields [Stefan]
- Add vduse_set_reconnect_log_file() API to support specifing the
reconnect log file
- Fix some bugs [Stefan]
Xie Yongji (6):
block: Support passing NULL ops to blk_set_dev_ops()
linux-headers: Add vduse.h
libvduse: Add VDUSE (vDPA Device in Userspace) library
vduse-blk: implements vduse-blk export
vduse-blk: Add vduse-blk resize support
libvduse: Add support for reconnecting
block/block-backend.c | 2 +-
block/export/export.c | 6 +
block/export/meson.build | 5 +
block/export/vduse-blk.c | 462 +++++++
block/export/vduse-blk.h | 20 +
linux-headers/linux/vduse.h | 306 +++++
meson.build | 28 +
meson_options.txt | 4 +
qapi/block-export.json | 24 +-
scripts/meson-buildoptions.sh | 7 +
scripts/update-linux-headers.sh | 2 +-
subprojects/libvduse/include/atomic.h | 1 +
subprojects/libvduse/libvduse.c | 1374 +++++++++++++++++++
subprojects/libvduse/libvduse.h | 237 ++++
subprojects/libvduse/linux-headers/linux | 1 +
subprojects/libvduse/meson.build | 10 +
subprojects/libvduse/standard-headers/linux | 1 +
17 files changed, 2486 insertions(+), 4 deletions(-)
create mode 100644 block/export/vduse-blk.c
create mode 100644 block/export/vduse-blk.h
create mode 100644 linux-headers/linux/vduse.h
create mode 120000 subprojects/libvduse/include/atomic.h
create mode 100644 subprojects/libvduse/libvduse.c
create mode 100644 subprojects/libvduse/libvduse.h
create mode 120000 subprojects/libvduse/linux-headers/linux
create mode 100644 subprojects/libvduse/meson.build
create mode 120000 subprojects/libvduse/standard-headers/linux
--
2.20.1
- [PATCH v2 0/6] Support exporting BDSs via VDUSE,
Xie Yongji <=
- [PATCH v2 2/6] linux-headers: Add vduse.h, Xie Yongji, 2022/02/15
- [PATCH v2 1/6] block: Support passing NULL ops to blk_set_dev_ops(), Xie Yongji, 2022/02/15
- [PATCH v2 3/6] libvduse: Add VDUSE (vDPA Device in Userspace) library, Xie Yongji, 2022/02/15
- [PATCH v2 5/6] vduse-blk: Add vduse-blk resize support, Xie Yongji, 2022/02/15
- [PATCH v2 6/6] libvduse: Add support for reconnecting, Xie Yongji, 2022/02/15
- [PATCH v2 4/6] vduse-blk: implements vduse-blk export, Xie Yongji, 2022/02/15