From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: David Marchand <david.marchand@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: "maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>,
"stephen@networkplumber.org" <stephen@networkplumber.org>,
"Hu, Jiayu" <jiayu.hu@intel.com>,
"Wang, YuanX" <yuanx.wang@intel.com>,
"Ding, Xuan" <xuan.ding@intel.com>,
"mb@smartsharesystems.com" <mb@smartsharesystems.com>
Subject: RE: [PATCH v6 3/9] vhost: terminate when access lock is not taken
Date: Thu, 9 Feb 2023 08:01:01 +0000 [thread overview]
Message-ID: <SN6PR11MB35042246924E0674EC64AAE49CD99@SN6PR11MB3504.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20230207104532.2370869-4-david.marchand@redhat.com>
> -----Original Message-----
> From: David Marchand <david.marchand@redhat.com>
> Sent: Tuesday, February 7, 2023 6:45 PM
> To: dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; stephen@networkplumber.org; Xia, Chenbo
> <chenbo.xia@intel.com>; Hu, Jiayu <jiayu.hu@intel.com>; Wang, YuanX
> <yuanx.wang@intel.com>; Ding, Xuan <xuan.ding@intel.com>;
> mb@smartsharesystems.com
> Subject: [PATCH v6 3/9] vhost: terminate when access lock is not taken
>
> Be a bit more strict when a programmatic error is detected with regards to
> the access_lock not being taken.
> Mark the new helper with __rte_assert_exclusive_lock so that clang
> understands where locks are expected to be taken.
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> Acked-by: Morten Brørup <mb@smartsharesystems.com>
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
> lib/vhost/vhost.c | 18 +++---------------
> lib/vhost/vhost.h | 10 ++++++++++
> lib/vhost/virtio_net.c | 6 +-----
> 3 files changed, 14 insertions(+), 20 deletions(-)
>
> diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
> index 19c7b92c32..8cd727ca2f 100644
> --- a/lib/vhost/vhost.c
> +++ b/lib/vhost/vhost.c
> @@ -1781,11 +1781,7 @@ rte_vhost_async_channel_register_thread_unsafe(int
> vid, uint16_t queue_id)
> if (unlikely(vq == NULL || !dev->async_copy))
> return -1;
>
> - if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
> - VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access
> lock taken.\n",
> - __func__);
> - return -1;
> - }
> + vq_assert_lock(dev, vq);
>
> return async_channel_register(dev, vq);
> }
> @@ -1847,11 +1843,7 @@
> rte_vhost_async_channel_unregister_thread_unsafe(int vid, uint16_t
> queue_id)
> if (vq == NULL)
> return -1;
>
> - if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
> - VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access
> lock taken.\n",
> - __func__);
> - return -1;
> - }
> + vq_assert_lock(dev, vq);
>
> if (!vq->async)
> return 0;
> @@ -1994,11 +1986,7 @@ rte_vhost_async_get_inflight_thread_unsafe(int vid,
> uint16_t queue_id)
> if (vq == NULL)
> return ret;
>
> - if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
> - VHOST_LOG_CONFIG(dev->ifname, ERR, "%s() called without access
> lock taken.\n",
> - __func__);
> - return -1;
> - }
> + vq_assert_lock(dev, vq);
>
> if (!vq->async)
> return ret;
> diff --git a/lib/vhost/vhost.h b/lib/vhost/vhost.h
> index 1f913803f6..82fe9b5fda 100644
> --- a/lib/vhost/vhost.h
> +++ b/lib/vhost/vhost.h
> @@ -513,6 +513,16 @@ struct virtio_net {
> struct rte_vhost_user_extern_ops extern_ops;
> } __rte_cache_aligned;
>
> +static inline void
> +vq_assert_lock__(struct virtio_net *dev, struct vhost_virtqueue *vq,
> const char *func)
> + __rte_assert_exclusive_lock(&vq->access_lock)
> +{
> + if (unlikely(!rte_spinlock_is_locked(&vq->access_lock)))
> + rte_panic("VHOST_CONFIG: (%s) %s() called without access lock
> taken.\n",
> + dev->ifname, func);
> +}
> +#define vq_assert_lock(dev, vq) vq_assert_lock__(dev, vq, __func__)
> +
> static __rte_always_inline bool
> vq_is_packed(struct virtio_net *dev)
> {
> diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
> index aac7aa9d01..cc9675ebe5 100644
> --- a/lib/vhost/virtio_net.c
> +++ b/lib/vhost/virtio_net.c
> @@ -2367,11 +2367,7 @@ rte_vhost_clear_queue_thread_unsafe(int vid,
> uint16_t queue_id,
>
> vq = dev->virtqueue[queue_id];
>
> - if (unlikely(!rte_spinlock_is_locked(&vq->access_lock))) {
> - VHOST_LOG_DATA(dev->ifname, ERR, "%s() called without access
> lock taken.\n",
> - __func__);
> - return -1;
> - }
> + vq_assert_lock(dev, vq);
>
> if (unlikely(!vq->async)) {
> VHOST_LOG_DATA(dev->ifname, ERR,
> --
> 2.39.1
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
next prev parent reply other threads:[~2023-02-09 8:01 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-28 12:17 [RFC PATCH 0/5] vhost lock annotations David Marchand
2022-03-28 12:17 ` [RFC PATCH 1/5] vhost: fix missing virtqueue lock protection David Marchand
2022-03-28 12:17 ` [RFC PATCH 2/5] vhost: annotate virtqueue access lock David Marchand
2022-03-28 12:17 ` [RFC PATCH 3/5] vhost: fix async access David Marchand
2022-03-28 12:17 ` [RFC PATCH 4/5] vhost: annotate async locking requirement David Marchand
2022-03-28 12:17 ` [RFC PATCH 5/5] vhost: annotate IOTLB locks David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 0/9] vhost lock annotations David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 1/9] vhost: fix missing virtqueue lock protection David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 2/9] eal: annotate spinlock and rwlock David Marchand
2022-03-31 9:22 ` David Marchand
2022-04-04 6:21 ` Stephen Hemminger
2022-04-07 8:20 ` David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 3/9] vhost: annotate virtqueue access lock David Marchand
2022-04-07 1:40 ` Hu, Jiayu
2022-04-07 7:03 ` David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 4/9] vhost: fix async access David Marchand
2022-03-31 8:00 ` Maxime Coquelin
2022-03-31 10:23 ` Hu, Jiayu
2022-04-04 6:57 ` Pai G, Sunil
2022-03-30 13:49 ` [RFC PATCH v2 5/9] vhost: annotate async acesses David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 6/9] vhost: annotate need reply handling David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 7/9] vhost: annotate VDPA device list accesses David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 8/9] vhost: annotate IOTLB locks David Marchand
2022-03-30 13:49 ` [RFC PATCH v2 9/9] vhost: enable lock check David Marchand
2022-03-30 14:03 ` [RFC PATCH v2 0/9] vhost lock annotations David Marchand
2022-03-30 14:37 ` Ali Alnubani
2022-04-05 7:11 ` David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 0/8] " David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 1/8] eal: annotate spinlock and rwlock David Marchand
2022-04-21 13:48 ` Maxime Coquelin
2022-04-28 12:16 ` David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 2/8] vhost: annotate virtqueue access lock David Marchand
2022-04-21 15:25 ` Maxime Coquelin
2022-04-22 9:49 ` David Marchand
2022-04-11 11:00 ` [RFC PATCH v3 3/8] vhost: fix async access David Marchand
2022-04-21 19:21 ` Maxime Coquelin
2022-05-17 13:24 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 4/8] vhost: annotate async accesses David Marchand
2022-04-22 7:20 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 5/8] vhost: annotate need reply handling David Marchand
2022-04-22 7:25 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 6/8] vhost: annotate vDPA device list accesses David Marchand
2022-04-22 7:26 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 7/8] vhost: annotate IOTLB locks David Marchand
2022-04-22 7:46 ` Maxime Coquelin
2022-04-11 11:00 ` [RFC PATCH v3 8/8] vhost: enable lock check David Marchand
2022-04-22 7:47 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 0/9] vhost lock annotations David Marchand
2023-01-19 18:46 ` [PATCH v4 1/9] eal: annotate spinlock, rwlock and seqlock David Marchand
2023-01-19 19:42 ` Stephen Hemminger
2023-01-19 20:39 ` Tyler Retzlaff
2023-01-19 21:16 ` David Marchand
2023-01-19 21:50 ` Tyler Retzlaff
2023-01-26 12:18 ` David Marchand
2023-01-19 20:55 ` David Marchand
2023-01-19 19:43 ` Stephen Hemminger
2023-01-31 16:18 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 2/9] vhost: simplify need reply handling David Marchand
2023-01-31 16:41 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 3/9] vhost: terminate when access lock is not taken David Marchand
2023-01-31 16:47 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 4/9] vhost: annotate virtqueue access lock David Marchand
2023-01-31 16:50 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 5/9] vhost: annotate async accesses David Marchand
2023-01-31 16:54 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 6/9] vhost: always take IOTLB lock David Marchand
2023-01-31 16:59 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 7/9] vhost: annotate " David Marchand
2023-01-31 17:05 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 8/9] vhost: annotate vDPA device list accesses David Marchand
2023-01-31 17:08 ` Maxime Coquelin
2023-01-19 18:46 ` [PATCH v4 9/9] vhost: enable lock check David Marchand
2023-01-31 17:14 ` Maxime Coquelin
2023-01-19 19:20 ` [PATCH v4 0/9] vhost lock annotations Morten Brørup
2023-02-01 11:14 ` [PATCH v5 0/9] Lock annotations David Marchand
2023-02-01 11:14 ` [PATCH v5 1/9] eal: annotate spinlock, rwlock and seqlock David Marchand
2023-02-01 12:32 ` David Marchand
2023-02-06 1:01 ` Tu, Lijuan
2023-02-06 8:12 ` David Marchand
2023-02-01 11:14 ` [PATCH v5 2/9] vhost: simplify need reply handling David Marchand
2023-02-01 11:14 ` [PATCH v5 3/9] vhost: terminate when access lock is not taken David Marchand
2023-02-01 11:14 ` [PATCH v5 4/9] vhost: annotate virtqueue access lock David Marchand
2023-02-01 11:14 ` [PATCH v5 5/9] vhost: annotate async accesses David Marchand
2023-02-01 11:14 ` [PATCH v5 6/9] vhost: always take IOTLB lock David Marchand
2023-02-01 11:14 ` [PATCH v5 7/9] vhost: annotate " David Marchand
2023-02-01 11:14 ` [PATCH v5 8/9] vhost: annotate vDPA device list accesses David Marchand
2023-02-01 11:14 ` [PATCH v5 9/9] vhost: enable lock check David Marchand
2023-02-07 10:45 ` [PATCH v6 0/9] Lock annotations David Marchand
2023-02-07 10:45 ` [PATCH v6 1/9] eal: annotate spinlock, rwlock and seqlock David Marchand
2023-02-09 8:00 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 2/9] vhost: simplify need reply handling David Marchand
2023-02-09 8:00 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 3/9] vhost: terminate when access lock is not taken David Marchand
2023-02-09 8:01 ` Xia, Chenbo [this message]
2023-02-07 10:45 ` [PATCH v6 4/9] vhost: annotate virtqueue access lock David Marchand
2023-02-09 8:01 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 5/9] vhost: annotate async accesses David Marchand
2023-02-09 8:01 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 6/9] vhost: always take IOTLB lock David Marchand
2023-02-09 8:01 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 7/9] vhost: annotate " David Marchand
2023-02-09 8:02 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 8/9] vhost: annotate vDPA device list accesses David Marchand
2023-02-09 8:02 ` Xia, Chenbo
2023-02-07 10:45 ` [PATCH v6 9/9] vhost: enable lock check David Marchand
2023-02-09 8:05 ` Xia, Chenbo
2023-02-09 7:59 ` [PATCH v6 0/9] Lock annotations Xia, Chenbo
2023-02-09 8:08 ` David Marchand
2023-02-09 8:24 ` Xia, Chenbo
2023-02-09 13:48 ` David Marchand
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=SN6PR11MB35042246924E0674EC64AAE49CD99@SN6PR11MB3504.namprd11.prod.outlook.com \
--to=chenbo.xia@intel.com \
--cc=david.marchand@redhat.com \
--cc=dev@dpdk.org \
--cc=jiayu.hu@intel.com \
--cc=maxime.coquelin@redhat.com \
--cc=mb@smartsharesystems.com \
--cc=stephen@networkplumber.org \
--cc=xuan.ding@intel.com \
--cc=yuanx.wang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).