[dpdk-dev] [PATCH 2/2] Patch to allow live migration of a VM with US-VHost.
Gray, Mark D
mark.d.gray at intel.com
Wed Aug 6 11:44:42 CEST 2014
> 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.
More information about the dev
mailing list