linux-kernel - [PATCH mlx5-vhost v3 01/16] vdpa/mlx5: Expose descriptor group mkey hw capability

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Message-ID: <20231009112401.1060447-2-dtatulea@nvidia.com>
Date:   Mon, 9 Oct 2023 14:23:46 +0300
From:   Dragos Tatulea <dtatulea@...dia.com>
To:     "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Eugenio Perez Martin <eperezma@...hat.com>,
        Si-Wei Liu <si-wei.liu@...cle.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        <virtualization@...ts.linux-foundation.org>
CC:     Dragos Tatulea <dtatulea@...dia.com>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Parav Pandit <parav@...dia.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Gal Pressman <gal@...dia.com>
Subject: [PATCH mlx5-vhost v3 01/16] vdpa/mlx5: Expose descriptor group mkey hw capability

Necessary for improved live migration flow. Actual support will be added
in a downstream patch.

Reviewed-by: Gal Pressman <gal@...dia.com>
Signed-off-by: Dragos Tatulea <dtatulea@...dia.com>
---
 include/linux/mlx5/mlx5_ifc.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index dd8421d021cf..ec15330b970d 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -1231,7 +1231,13 @@ struct mlx5_ifc_virtio_emulation_cap_bits {
 	u8         max_emulated_devices[0x8];
 	u8         max_num_virtio_queues[0x18];
 
-	u8         reserved_at_a0[0x60];
+	u8         reserved_at_a0[0x20];
+
+	u8	   reserved_at_c0[0x13];
+	u8         desc_group_mkey_supported[0x1];
+	u8         reserved_at_d4[0xc];
+
+	u8         reserved_at_e0[0x20];
 
 	u8         umem_1_buffer_param_a[0x20];
 
-- 
2.41.0