> Subject: [dpdk-dev] [PATCH 2/2] Patch to allow live migration of a VM with > US-VHost. > > > Signed-off-by: Claire Murphy <claire.k.murphy at intel.com> > --- > examples/vhost/vhost-net-cdev.c | 18 ++++++++++++++++++ > examples/vhost/virtio-net.c | 8 +++++++- > 2 files changed, 25 insertions(+), 1 deletions(-) > > diff --git a/examples/vhost/vhost-net-cdev.c b/examples/vhost/vhost-net- > cdev.c index ef42e88..e942df0 100644 > --- a/examples/vhost/vhost-net-cdev.c > +++ b/examples/vhost/vhost-net-cdev.c > @@ -275,6 +275,24 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg, > VHOST_IOCTL_R(struct vhost_vring_file, file, ops- > >set_vring_call); > break; > > + case VHOST_SET_VRING_ERR: > + RTE_LOG(ERR, CONFIG, "(%"PRIu64") IOCTL: > VHOST_SET_VRING_ERR cmd=%d Un-Supported\n", ctx.fh,cmd); > + result = -1; > + fuse_reply_ioctl(req, result, NULL, 0); > + break; > + > + case VHOST_SET_LOG_BASE: > + RTE_LOG(ERR, CONFIG, "(%"PRIu64") IOCTL: > VHOST_SET_LOG_BASE cmd=%d Un-Supported\n", ctx.fh,cmd); > + result = 0; > + fuse_reply_ioctl(req, result, NULL, 0); > + break; > + > + case VHOST_SET_LOG_FD: > + RTE_LOG(ERR, CONFIG, "(%"PRIu64") IOCTL: > VHOST_SET_LOG_FD cmd=%d Un-Supported \n", ctx.fh,cmd); > + result = -1; > + fuse_reply_ioctl(req, result, NULL, 0); > + break; > + > default: > RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") IOCTL: > DOESN NOT EXIST\n", ctx.fh); > result = -1; > diff --git a/examples/vhost/virtio-net.c b/examples/vhost/virtio-net.c index > 9be959f..3cf650d 100644 > --- a/examples/vhost/virtio-net.c > +++ b/examples/vhost/virtio-net.c > @@ -573,7 +573,13 @@ set_features(struct vhost_device_ctx ctx, uint64_t > *pu) > dev = get_device(ctx); > if (dev == NULL) > return -1; > - if (*pu & ~VHOST_FEATURES) > + > + /* > + * We mask the VHOST_F_LOG_ALL feature bit here as it is enabled > by default > + * during migration in QEMU even if we have it disabled as a feature > in > + * userspace vhost. > + */ > + if (*pu & ~(VHOST_FEATURES | (1ULL << VHOST_F_LOG_ALL))) > return -1; > > /* Store the negotiated feature list for the device. */ > -- > 1.7.0.7
+1. This patch enables live migration for us on Intel DPDK vSwitch.
