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From: Xueming Li <xuemingl@mellanox.com>
Cc: dev@dpdk.org, Asaf Penso <asafp@mellanox.com>
Subject: [dpdk-dev] [v1] vdpa/mlx5: use control core Id for vhost thread
Date: Tue, 28 Jul 2020 06:22:16 +0000
Message-ID: <1595917336-30613-1-git-send-email-xuemingl@mellanox.com> (raw)
In-Reply-To: <1595916684-30135-1-git-send-email-xuemingl@mellanox.com>

With latest rte api, vdpa example failed on vq setup, the api to get
event queue of specified core failed.

The api to get event queue needs core id as input, but after
commit 67ae5936c4fc36 ("eal: fix lcore accessors for non-EAL threads"),
code of "vhost-event" thread to get current core returns -1, an invalid
core id.

As vhost thread created on same core of eal control core, this patch
uses control core ID as a workaround.

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
---
 drivers/vdpa/mlx5/mlx5_vdpa_event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_event.c b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
index 13ad43611e..ff6db8e345 100644
--- a/drivers/vdpa/mlx5/mlx5_vdpa_event.c
+++ b/drivers/vdpa/mlx5/mlx5_vdpa_event.c
@@ -55,7 +55,7 @@ mlx5_vdpa_event_qp_global_prepare(struct mlx5_vdpa_priv *priv)
 
 	if (priv->eventc)
 		return 0;
-	lcore = (uint32_t)rte_lcore_to_cpu_id(-1);
+	lcore = (uint32_t)rte_get_master_lcore();
 	if (mlx5_glue->devx_query_eqn(priv->ctx, lcore, &priv->eqn)) {
 		rte_errno = errno;
 		DRV_LOG(ERR, "Failed to query EQ number %d.", rte_errno);
-- 
2.17.1


  reply	other threads:[~2020-07-28  6:22 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28  6:11 [dpdk-dev] [PATCH] vdpa/mlx5: use master " Xueming Li
2020-07-28  6:22 ` Xueming Li [this message]
2020-07-28  7:08 ` David Marchand
2020-07-28  7:19   ` Matan Azrad
2020-07-28  7:25     ` David Marchand
2020-07-28  7:30       ` Matan Azrad
2020-07-28  7:53         ` David Marchand
2020-07-28  8:06           ` Xueming(Steven) Li
2020-07-28  8:27             ` Matan Azrad
2020-07-28  8:30               ` David Marchand
2020-07-28  8:24 ` Xueming(Steven) Li
2020-07-28  9:22 ` [dpdk-dev] [v2] vdpa/mlx5: fix event queue number query Xueming Li
2020-07-28 12:05   ` David Marchand
2020-07-28 12:26     ` Xueming(Steven) Li
2020-07-28 12:32 ` [dpdk-dev] [v3] " Xueming Li
2020-07-28 14:04   ` Maxime Coquelin
2020-07-28 15:55   ` Maxime Coquelin

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