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Date:   Thu, 17 Sep 2020 12:45:51 -0700
From:   Randy Dunlap <>
        "" <>,
        LKML <>,
        Stephen Rothwell <>,
        "Michael S. Tsirkin" <>,
        Jason Wang <>,
        Saeed Mahameed <>,
        Leon Romanovsky <>
Subject: [PATCH v2 -next] vdpa: mlx5: change Kconfig depends to fix build

From: Randy Dunlap <>

drivers/vdpa/mlx5/ uses vhost_iotlb*() interfaces, so add a dependency
on VHOST to eliminate build errors.

ld: drivers/vdpa/mlx5/core/mr.o: in function `add_direct_chain':
mr.c:(.text+0x106): undefined reference to `vhost_iotlb_itree_first'
ld: mr.c:(.text+0x1cf): undefined reference to `vhost_iotlb_itree_next'
ld: mr.c:(.text+0x30d): undefined reference to `vhost_iotlb_itree_first'
ld: mr.c:(.text+0x3e8): undefined reference to `vhost_iotlb_itree_next'
ld: drivers/vdpa/mlx5/core/mr.o: in function `_mlx5_vdpa_create_mr':
mr.c:(.text+0x908): undefined reference to `vhost_iotlb_itree_first'
ld: mr.c:(.text+0x9e6): undefined reference to `vhost_iotlb_itree_next'
ld: drivers/vdpa/mlx5/core/mr.o: in function `mlx5_vdpa_handle_set_map':
mr.c:(.text+0xf1d): undefined reference to `vhost_iotlb_itree_first'

Signed-off-by: Randy Dunlap <>
Cc: "Michael S. Tsirkin" <>
Cc: Jason Wang <>
Cc: Saeed Mahameed <>
Cc: Leon Romanovsky <>
v2: change from select to depends (Saeed)

 drivers/vdpa/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20200917.orig/drivers/vdpa/Kconfig
+++ linux-next-20200917/drivers/vdpa/Kconfig
@@ -31,7 +31,7 @@ config IFCVF
 config MLX5_VDPA
 	bool "MLX5 VDPA support library for ConnectX devices"
-	depends on MLX5_CORE
+	depends on VHOST && MLX5_CORE
 	default n
 	  Support library for Mellanox VDPA drivers. Provides code that is

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