| Message ID | 20220302180318.28893-1-slp@redhat.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Enable vhost-user to be used on BSD systems | expand |
On Wed, Mar 02, 2022 at 07:03:15PM +0100, Sergio Lopez wrote: > Since QEMU is already able to emulate ioeventfd using pipefd, we're already > pretty close to supporting vhost-user on non-Linux systems. > > This two patches bridge the gap by: > > 1. Adding a new event_notifier_get_wfd() to return wfd on the places where > the peer is expected to write to the notifier. > > 2. Modifying the build system to it allows enabling vhost-user on BSD. Please update the vhost-user protocol specification. It mentions eventfd and there needs to be a note explaining how pipes are used instead on non-Linux platforms. Stefan
Since QEMU is already able to emulate ioeventfd using pipefd, we're already pretty close to supporting vhost-user on non-Linux systems. This two patches bridge the gap by: 1. Adding a new event_notifier_get_wfd() to return wfd on the places where the peer is expected to write to the notifier. 2. Modifying the build system to it allows enabling vhost-user on BSD. v1->v2: - Drop: "Allow returning EventNotifier's wfd" (Alex Williamson) - Add: "event_notifier: add event_notifier_get_wfd()" (Alex Williamson) - Add: "vhost: use wfd on functions setting vring call fd" - Rename: "Allow building vhost-user in BSD" to "configure, meson: allow enabling vhost-user on all POSIX systems" - Instead of making possible enabling vhost-user on Linux and BSD systems, allow enabling it on all non-Windows platforms. (Paolo) Sergio Lopez (3): event_notifier: add event_notifier_get_wfd() vhost: use wfd on functions setting vring call fd configure, meson: allow enabling vhost-user on all POSIX systems configure | 4 ++-- hw/virtio/vhost.c | 6 +++--- include/qemu/event_notifier.h | 1 + meson.build | 2 +- util/event_notifier-posix.c | 5 +++++ 5 files changed, 12 insertions(+), 6 deletions(-)