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[PATCH v5 0/8] Support exporting BDSs via VDUSE
From: |
Xie Yongji |
Subject: |
[PATCH v5 0/8] Support exporting BDSs via VDUSE |
Date: |
Wed, 4 May 2022 15:40:43 +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!
V4 to V5:
- Abstract out the logic for virito-blk I/O process from
vhost-user-blk-server and reuse it [Kevin]
- Fix missing VIRTIO_BLK_F_FLUSH [Kevin]
- Support discard and write_zeroes [Kevin]
- Rebase to the newest tree
V3 to V4:
- Fix some comments on QAPI [Eric]
V2 to V3:
- Introduce vduse_get_virtio_features() [Stefan]
- Update MAINTAINERS file [Stefan]
- Fix handler of VIRTIO_BLK_T_GET_ID request [Stefan]
- Add barrier for vduse_queue_inflight_get() [Stefan]
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 (8):
block: Support passing NULL ops to blk_set_dev_ops()
block-backend: Introduce blk_get_guest_block_size()
block/export: Abstract out the logic of virtio-blk I/O process
linux-headers: Add vduse.h
libvduse: Add VDUSE (vDPA Device in Userspace) library
vduse-blk: Implement vduse-blk export
vduse-blk: Add vduse-blk resize support
libvduse: Add support for reconnecting
MAINTAINERS | 9 +
block/block-backend.c | 8 +-
block/export/export.c | 6 +
block/export/meson.build | 7 +-
block/export/vduse-blk.c | 346 +++++
block/export/vduse-blk.h | 20 +
block/export/vhost-user-blk-server.c | 249 +---
block/export/virtio-blk-handler.c | 237 ++++
block/export/virtio-blk-handler.h | 33 +
include/sysemu/block-backend-io.h | 1 +
linux-headers/linux/vduse.h | 306 ++++
meson.build | 28 +
meson_options.txt | 4 +
qapi/block-export.json | 25 +-
scripts/meson-buildoptions.sh | 7 +
scripts/update-linux-headers.sh | 2 +-
subprojects/libvduse/include/atomic.h | 1 +
subprojects/libvduse/include/compiler.h | 1 +
subprojects/libvduse/libvduse.c | 1386 +++++++++++++++++++
subprojects/libvduse/libvduse.h | 247 ++++
subprojects/libvduse/linux-headers/linux | 1 +
subprojects/libvduse/meson.build | 10 +
subprojects/libvduse/standard-headers/linux | 1 +
23 files changed, 2695 insertions(+), 240 deletions(-)
create mode 100644 block/export/vduse-blk.c
create mode 100644 block/export/vduse-blk.h
create mode 100644 block/export/virtio-blk-handler.c
create mode 100644 block/export/virtio-blk-handler.h
create mode 100644 linux-headers/linux/vduse.h
create mode 120000 subprojects/libvduse/include/atomic.h
create mode 120000 subprojects/libvduse/include/compiler.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 v5 0/8] Support exporting BDSs via VDUSE,
Xie Yongji <=
- [PATCH v5 1/8] block: Support passing NULL ops to blk_set_dev_ops(), Xie Yongji, 2022/05/04
- [PATCH v5 4/8] linux-headers: Add vduse.h, Xie Yongji, 2022/05/04
- [PATCH v5 7/8] vduse-blk: Add vduse-blk resize support, Xie Yongji, 2022/05/04
- [PATCH v5 2/8] block-backend: Introduce blk_get_guest_block_size(), Xie Yongji, 2022/05/04
- [PATCH v5 8/8] libvduse: Add support for reconnecting, Xie Yongji, 2022/05/04