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| author | Stefano Garzarella <sgarzare@redhat.com> | 2023-05-30 09:19:41 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2023-06-01 11:08:21 -0400 |
| commit | 98b126f5e3228a346c774e569e26689943b401dd (patch) | |
| tree | 9c8351524ee4608f1c58c0a32981c17eb0436742 | |
| parent | cad2ccc395c7113fb30bc9390774b67b34f06c68 (diff) | |
| download | qemu-98b126f5e3228a346c774e569e26689943b401dd.zip qemu-98b126f5e3228a346c774e569e26689943b401dd.tar.gz qemu-98b126f5e3228a346c774e569e26689943b401dd.tar.bz2 | |
qapi: add '@fdset' feature for BlockdevOptionsVirtioBlkVhostVdpa
The virtio-blk-vhost-vdpa driver in libblkio 1.3.0 supports the fd
passing through the new 'fd' property.
Since now we are using qemu_open() on '@path' if the virtio-blk driver
supports the fd passing, let's announce it.
In this way, the management layer can pass the file descriptor of an
already opened vhost-vdpa character device. This is useful especially
when the device can only be accessed with certain privileges.
Add the '@fdset' feature only when the virtio-blk-vhost-vdpa driver
in libblkio supports it.
Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20230530071941.8954-3-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
| -rw-r--r-- | meson.build | 4 | ||||
| -rw-r--r-- | qapi/block-core.json | 6 |
2 files changed, 10 insertions, 0 deletions
diff --git a/meson.build b/meson.build index bc76ea9..a61d3e9 100644 --- a/meson.build +++ b/meson.build @@ -2106,6 +2106,10 @@ config_host_data.set('CONFIG_LZO', lzo.found()) config_host_data.set('CONFIG_MPATH', mpathpersist.found()) config_host_data.set('CONFIG_MPATH_NEW_API', mpathpersist_new_api) config_host_data.set('CONFIG_BLKIO', blkio.found()) +if blkio.found() + config_host_data.set('CONFIG_BLKIO_VHOST_VDPA_FD', + blkio.version().version_compare('>=1.3.0')) +endif config_host_data.set('CONFIG_CURL', curl.found()) config_host_data.set('CONFIG_CURSES', curses.found()) config_host_data.set('CONFIG_GBM', gbm.found()) diff --git a/qapi/block-core.json b/qapi/block-core.json index 98d9116..4bf8917 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -3955,10 +3955,16 @@ # # @path: path to the vhost-vdpa character device. # +# Features: +# @fdset: Member @path supports the special "/dev/fdset/N" path +# (since 8.1) +# # Since: 7.2 ## { 'struct': 'BlockdevOptionsVirtioBlkVhostVdpa', 'data': { 'path': 'str' }, + 'features': [ { 'name' :'fdset', + 'if': 'CONFIG_BLKIO_VHOST_VDPA_FD' } ], 'if': 'CONFIG_BLKIO' } ## |