From: "Michael S. Tsirkin" <mst@redhat.com>
To: Stefan Hajnoczi <stefanha@redhat.com>
Cc: dev@dpdk.org, maxime.coquelin@redhat.com,
Yuanhan Liu <yliu@fridaylinux.org>,
wei.w.wang@intel.com, zhiyong.yang@intel.com,
jasowang@redhat.com
Subject: Re: [dpdk-dev] [RFC 24/24] WORKAROUND examples/vhost_scsi: avoid broken EVENT_IDX
Date: Fri, 19 Jan 2018 21:31:32 +0200 [thread overview]
Message-ID: <20180119213030-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20180119134444.24927-25-stefanha@redhat.com>
On Fri, Jan 19, 2018 at 01:44:44PM +0000, Stefan Hajnoczi wrote:
> The EVENT_IDX code in DPDK is broken. It's missing the
> signalled_used_valid flag that handles the corner cases (startup and
> wrapping). Disable it for now.
>
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
FYI signalled_used_valid isn't strictly required,
there are ways to handle event idx without that,
e.g. like virtio within guest.
> ---
> examples/vhost_scsi/vhost_scsi.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/examples/vhost_scsi/vhost_scsi.c b/examples/vhost_scsi/vhost_scsi.c
> index 61001cadb..7106dc6d2 100644
> --- a/examples/vhost_scsi/vhost_scsi.c
> +++ b/examples/vhost_scsi/vhost_scsi.c
> @@ -22,7 +22,6 @@
> #include "scsi_spec.h"
>
> #define VIRTIO_SCSI_FEATURES ((1 << VIRTIO_F_NOTIFY_ON_EMPTY) |\
> - (1 << VIRTIO_RING_F_EVENT_IDX) |\
> (1 << VIRTIO_SCSI_F_INOUT) |\
> (1 << VIRTIO_SCSI_F_CHANGE))
>
> --
> 2.14.3
next prev parent reply other threads:[~2018-01-19 19:31 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-19 13:44 [dpdk-dev] [RFC 00/24] vhost: add virtio-vhost-user transport Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 01/24] vhost: move vring_call() into trans_af_unix.c Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 02/24] vhost: move AF_UNIX code from socket.c to trans_af_unix.c Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 03/24] vhost: allocate per-socket transport state Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 04/24] vhost: move socket_fd and un sockaddr into trans_af_unix.c Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 05/24] vhost: move start_server/client() calls to trans_af_unix.c Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 06/24] vhost: move vhost_user_connection " Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 07/24] vhost: move vhost_user_reconnect_init() into trans_af_unix.c Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 08/24] vhost: move vhost_user.fdset to trans_af_unix.c Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 09/24] vhost: pass vhost_transport_ops through vhost_new_device() Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 10/24] vhost: embed struct virtio_net inside struct vhost_user_connection Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 11/24] vhost: extract vhost_user.c socket I/O into transport Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 12/24] vhost: move slave_req_fd field to AF_UNIX transport Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 13/24] vhost: move mmap/munmap " Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 14/24] vhost: move librte_vhost to drivers/ Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 15/24] vhost: add virtio pci framework Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 16/24] vhost: remember a vhost_virtqueue's queue index Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 17/24] vhost: add virtio-vhost-user transport Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 18/24] vhost: add RTE_VHOST_USER_VIRTIO_TRANSPORT flag Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 19/24] net/vhost: add virtio-vhost-user support Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 20/24] examples/vhost_scsi: add --socket-file argument Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 21/24] examples/vhost_scsi: add virtio-vhost-user support Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 22/24] usertools: add virtio-vhost-user devices to dpdk-devbind.py Stefan Hajnoczi
2018-01-19 13:44 ` [dpdk-dev] [RFC 23/24] WORKAROUND revert virtio-net mq vring deletion Stefan Hajnoczi
2018-01-30 17:52 ` Maxime Coquelin
2018-01-19 13:44 ` [dpdk-dev] [RFC 24/24] WORKAROUND examples/vhost_scsi: avoid broken EVENT_IDX Stefan Hajnoczi
2018-01-19 19:31 ` Michael S. Tsirkin [this message]
2018-01-31 10:02 ` [dpdk-dev] [RFC 00/24] vhost: add virtio-vhost-user transport Maxime Coquelin
[not found] ` <20180410093847.GA22081@stefanha-x1.localdomain>
2018-04-10 14:56 ` Wang, Wei W
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