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| author | Xie Yongji | 2022-05-23 10:46:09 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2022-06-24 17:07:06 +0200 |
| commit | 2a2359b84407b35fe978e98b7396f2ab8c5dd8b7 (patch) | |
| tree | 9ed8b268bc8db0f025db90f5307a822d5fdfb13a /meson.build | |
| parent | libvduse: Add VDUSE (vDPA Device in Userspace) library (diff) | |
| download | qemu-2a2359b84407b35fe978e98b7396f2ab8c5dd8b7.tar.gz qemu-2a2359b84407b35fe978e98b7396f2ab8c5dd8b7.tar.xz qemu-2a2359b84407b35fe978e98b7396f2ab8c5dd8b7.zip | |
vduse-blk: Implement vduse-blk export
This implements a VDUSE block backends based on
the libvduse library. We can use it to export the BDSs
for both VM and container (host) usage.
The new command-line syntax is:
$ qemu-storage-daemon \
--blockdev file,node-name=drive0,filename=test.img \
--export vduse-blk,node-name=drive0,id=vduse-export0,writable=on
After the qemu-storage-daemon started, we need to use
the "vdpa" command to attach the device to vDPA bus:
$ vdpa dev add name vduse-export0 mgmtdev vduse
Also the device must be removed via the "vdpa" command
before we stop the qemu-storage-daemon.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220523084611.91-7-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'meson.build')
| -rw-r--r-- | meson.build | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/meson.build b/meson.build index ecfe31ca87..397ca1d60a 100644 --- a/meson.build +++ b/meson.build @@ -1550,6 +1550,17 @@ elif get_option('libvduse').disabled() have_libvduse = false endif +have_vduse_blk_export = (have_libvduse and targetos == 'linux') +if get_option('vduse_blk_export').enabled() + if targetos != 'linux' + error('vduse_blk_export requires linux') + elif not have_libvduse + error('vduse_blk_export requires libvduse support') + endif +elif get_option('vduse_blk_export').disabled() + have_vduse_blk_export = false +endif + # libbpf libbpf = dependency('libbpf', required: get_option('bpf'), method: 'pkg-config') if libbpf.found() and not cc.links(''' @@ -1792,6 +1803,7 @@ config_host_data.set('CONFIG_VHOST_CRYPTO', have_vhost_user_crypto) config_host_data.set('CONFIG_VHOST_VDPA', have_vhost_vdpa) config_host_data.set('CONFIG_VMNET', vmnet.found()) config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server) +config_host_data.set('CONFIG_VDUSE_BLK_EXPORT', have_vduse_blk_export) config_host_data.set('CONFIG_PNG', png.found()) config_host_data.set('CONFIG_VNC', vnc.found()) config_host_data.set('CONFIG_VNC_JPEG', jpeg.found()) @@ -3857,6 +3869,7 @@ if have_block summary_info += {'qed support': get_option('qed').allowed()} summary_info += {'parallels support': get_option('parallels').allowed()} summary_info += {'FUSE exports': fuse} + summary_info += {'VDUSE block exports': have_vduse_blk_export} endif summary(summary_info, bool_yn: true, section: 'Block layer support') |