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From: "Eugenio Pérez" <eperezma@redhat.com>
To: qemu-devel@nongnu.org
Cc: Jason Wang <jasowang@redhat.com>,
	Gautam Dawar <gdawar@xilinx.com>,
	si-wei.liu@oracle.com, Zhu Lingshan <lingshan.zhu@intel.com>,
	Stefano Garzarella <sgarzare@redhat.com>,
	Parav Pandit <parav@mellanox.com>, Cindy Lu <lulu@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Harpreet Singh Anand <hanand@xilinx.com>,
	Laurent Vivier <lvivier@redhat.com>,
	Shannon Nelson <snelson@pensando.io>,
	Lei Yang <leiyang@redhat.com>,
	Dragos Tatulea <dtatulea@nvidia.com>
Subject: [PATCH 6/7] vdpa: enable cvq svq if data vq are shadowed
Date: Fri, 28 Jul 2023 19:20:27 +0200	[thread overview]
Message-ID: <20230728172028.2074052-7-eperezma@redhat.com> (raw)
In-Reply-To: <20230728172028.2074052-1-eperezma@redhat.com>

Previous to this commit, it was assumed that data can only be shadowed
with x-cvq, or if a migration was in place.  So CVQ did not need to
check for migration.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 net/vhost-vdpa.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 2c1cfda657..118837c6b9 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -514,11 +514,10 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc)
 
     s0 = vhost_vdpa_net_first_nc_vdpa(s);
     v->shadow_data = s0->vhost_vdpa.shadow_vqs_enabled;
-    v->shadow_vqs_enabled = s->always_svq;
+    v->shadow_vqs_enabled = v->shadow_data;
     s->vhost_vdpa.address_space_id = VHOST_VDPA_GUEST_PA_ASID;
 
-    if (s->vhost_vdpa.shadow_data) {
-        /* SVQ is already configured for all virtqueues */
+    if (s->always_svq) {
         goto out;
     }
 
-- 
2.39.3



  parent reply	other threads:[~2023-07-28 18:54 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-28 17:20 [PATCH 0/7] Enable vdpa net migration with features depending on CVQ Eugenio Pérez
2023-07-28 17:20 ` [PATCH 1/7] vdpa: export vhost_vdpa_set_vring_ready Eugenio Pérez
2023-07-28 17:20 ` [PATCH 2/7] vdpa: add should_enable op Eugenio Pérez
2023-07-28 17:20 ` [PATCH 3/7] vdpa: use virtio_ops->should_enable at vhost_vdpa_set_vrings_ready Eugenio Pérez
2023-07-28 17:20 ` [PATCH 4/7] vdpa: add stub vhost_vdpa_should_enable Eugenio Pérez
2023-07-28 17:20 ` [PATCH 5/7] vdpa: delay enable of data vqs Eugenio Pérez
2023-07-28 17:20 ` Eugenio Pérez [this message]
2023-07-28 17:20 ` [PATCH 7/7] vdpa: remove net cvq migration blocker Eugenio Pérez
2023-07-31  6:41 ` [PATCH 0/7] Enable vdpa net migration with features depending on CVQ Jason Wang
2023-07-31 10:15   ` Eugenio Perez Martin
2023-08-01  3:48     ` Jason Wang

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