diff options
author | Alex Bennée <alex.bennee@linaro.org> | 2023-01-30 12:47:28 +0000 |
---|---|---|
committer | Michael S. Tsirkin <mst@redhat.com> | 2023-03-02 03:10:47 -0500 |
commit | e1a0e635c91e4e1255c16a178afde30aa32b7efe (patch) | |
tree | 6c6d740c0598381762df9127927cb9df93e7c1d7 /backends/vhost-user.c | |
parent | cd69d47cddabc9adf4562ac968437bb547f46630 (diff) | |
download | qemu-e1a0e635c91e4e1255c16a178afde30aa32b7efe.zip qemu-e1a0e635c91e4e1255c16a178afde30aa32b7efe.tar.gz qemu-e1a0e635c91e4e1255c16a178afde30aa32b7efe.tar.bz2 |
backends/vhost-user: remove the ioeventfd check
While ioeventfds are needed for good performance with KVM guests it
should not be a gating requirement. We can run vhost-user backends using
simulated ioeventfds or inband signalling.
With this change I can run:
$QEMU $OPTS \
-display gtk,gl=on \
-device vhost-user-gpu-pci,chardev=vhgpu \
-chardev socket,id=vhgpu,path=vhgpu.sock
with:
./contrib/vhost-user-gpu/vhost-user-gpu \
-s vhgpu.sock \
-v
and at least see things start-up - although the display gets rotated by
180 degrees. Once lightdm takes over we never make it to the login
prompt and just get a blank screen.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20221202132231.1048669-1-alex.bennee@linaro.org>
Message-Id: <20230130124728.175610-1-alex.bennee@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'backends/vhost-user.c')
-rw-r--r-- | backends/vhost-user.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/backends/vhost-user.c b/backends/vhost-user.c index 0596223..94c6a82 100644 --- a/backends/vhost-user.c +++ b/backends/vhost-user.c @@ -20,12 +20,6 @@ #include "io/channel-command.h" #include "hw/virtio/virtio-bus.h" -static bool -ioeventfd_enabled(void) -{ - return kvm_enabled() && kvm_eventfds_enabled(); -} - int vhost_user_backend_dev_init(VhostUserBackend *b, VirtIODevice *vdev, unsigned nvqs, Error **errp) @@ -34,11 +28,6 @@ vhost_user_backend_dev_init(VhostUserBackend *b, VirtIODevice *vdev, assert(!b->vdev && vdev); - if (!ioeventfd_enabled()) { - error_setg(errp, "vhost initialization failed: requires kvm"); - return -1; - } - if (!vhost_user_init(&b->vhost_user, &b->chr, errp)) { return -1; } |