From: Dragos Tatulea <dtatulea@nvidia.com>
To: "Michael S . Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Eugenio Perez Martin <eperezma@redhat.com>,
Si-Wei Liu <si-wei.liu@oracle.com>,
Saeed Mahameed <saeedm@nvidia.com>,
Leon Romanovsky <leon@kernel.org>,
<virtualization@lists.linux-foundation.org>,
Gal Pressman <gal@nvidia.com>
Cc: Dragos Tatulea <dtatulea@nvidia.com>, <kvm@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, Parav Pandit <parav@nvidia.com>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Subject: [PATCH vhost v4 03/15] vdpa: Add VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND flag
Date: Tue, 19 Dec 2023 20:08:46 +0200 [thread overview]
Message-ID: <20231219180858.120898-4-dtatulea@nvidia.com> (raw)
In-Reply-To: <20231219180858.120898-1-dtatulea@nvidia.com>
The virtio spec doesn't allow changing virtqueue state after
DRIVER_OK. Some devices do support this operation when the device is
suspended. The VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND flag
advertises this support as a backend features.
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Suggested-by: Eugenio Pérez <eperezma@redhat.com>
---
include/uapi/linux/vhost_types.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/include/uapi/linux/vhost_types.h b/include/uapi/linux/vhost_types.h
index aacd067afc89..848dadc95ca1 100644
--- a/include/uapi/linux/vhost_types.h
+++ b/include/uapi/linux/vhost_types.h
@@ -196,5 +196,9 @@ struct vhost_vdpa_iova_range {
* and is in state DRIVER_OK.
*/
#define VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND 0x9
+/* Device supports changing virtqueue state when device is suspended
+ * and is in state DRIVER_OK.
+ */
+#define VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND 0x10
#endif
--
2.43.0
next prev parent reply other threads:[~2023-12-19 18:09 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 18:08 [PATCH vhost v4 00/15] vdpa/mlx5: Add support for resumable vqs Dragos Tatulea
2023-12-19 18:08 ` [PATCH mlx5-vhost v4 01/15] vdpa/mlx5: Expose resumable vq capability Dragos Tatulea
2023-12-20 3:46 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 02/15] vdpa: Add VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND flag Dragos Tatulea
2023-12-20 3:46 ` Jason Wang
2023-12-20 4:05 ` Jason Wang
2023-12-20 12:57 ` Dragos Tatulea
2023-12-20 13:32 ` Eugenio Perez Martin
2023-12-21 2:03 ` Jason Wang
2023-12-21 7:46 ` Eugenio Perez Martin
2023-12-21 11:52 ` Dragos Tatulea
2023-12-21 12:08 ` Eugenio Perez Martin
2023-12-21 14:38 ` Dragos Tatulea
2023-12-21 14:55 ` Eugenio Perez Martin
2023-12-21 15:07 ` Dragos Tatulea
2023-12-22 7:30 ` Eugenio Perez Martin
2023-12-22 8:29 ` Michael S. Tsirkin
2023-12-22 10:51 ` Dragos Tatulea
2023-12-25 13:45 ` Dragos Tatulea
2023-12-22 2:50 ` Jason Wang
2023-12-20 16:09 ` Eugenio Perez Martin
2023-12-19 18:08 ` Dragos Tatulea [this message]
2023-12-20 16:10 ` [PATCH vhost v4 03/15] vdpa: Add VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND flag Eugenio Perez Martin
2023-12-19 18:08 ` [PATCH vhost v4 04/15] vdpa: Accept VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND backend feature Dragos Tatulea
2023-12-20 16:11 ` Eugenio Perez Martin
2023-12-19 18:08 ` [PATCH vhost v4 05/15] vdpa: Accept VHOST_BACKEND_F_CHANGEABLE_VQ_STATE_IN_SUSPEND " Dragos Tatulea
2023-12-20 16:12 ` Eugenio Perez Martin
2023-12-19 18:08 ` [PATCH vhost v4 06/15] vdpa: Track device suspended state Dragos Tatulea
2023-12-20 3:46 ` Jason Wang
2023-12-20 12:55 ` Dragos Tatulea
2023-12-22 11:22 ` Dragos Tatulea
2023-12-25 4:11 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 07/15] vdpa: Block vq address change in DRIVER_OK unless device supports it Dragos Tatulea
2023-12-20 16:31 ` Eugenio Perez Martin
2023-12-19 18:08 ` [PATCH vhost v4 08/15] vdpa: Block vq state " Dragos Tatulea
2023-12-20 16:32 ` Eugenio Perez Martin
2023-12-19 18:08 ` [PATCH vhost v4 09/15] vdpa/mlx5: Allow modifying multiple vq fields in one modify command Dragos Tatulea
2023-12-20 3:46 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 10/15] vdpa/mlx5: Introduce per vq and device resume Dragos Tatulea
2023-12-20 3:47 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 11/15] vdpa/mlx5: Mark vq addrs for modification in hw vq Dragos Tatulea
2023-12-19 18:08 ` [PATCH vhost v4 12/15] vdpa/mlx5: Mark vq state " Dragos Tatulea
2023-12-20 3:47 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 13/15] vdpa/mlx5: Use vq suspend/resume during .set_map Dragos Tatulea
2023-12-20 3:47 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 14/15] vdpa/mlx5: Introduce reference counting to mrs Dragos Tatulea
2023-12-20 3:47 ` Jason Wang
2023-12-19 18:08 ` [PATCH vhost v4 15/15] vdpa/mlx5: Add mkey leak detection Dragos Tatulea
2023-12-25 14:41 ` [PATCH vhost v4 00/15] vdpa/mlx5: Add support for resumable vqs Michael S. Tsirkin
2023-12-25 15:05 ` Dragos Tatulea
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