vhost: revert "vhost: disable for OABI"

This reverts commit d085eb8c ("vhost: disable for OABI")
With commit "virtio: force spec specified alignment on types"
in place, we force proper alignment for all structures,
so there's no longer a reason to blacklist OABI.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

drivers/misc/mic/Kconfig

@@ -116,7 +116,7 @@ config MIC_COSM
 
 config VOP
 	tristate "VOP Driver"
-	depends on VOP_BUS && VHOST_DPN
+	depends on VOP_BUS
 	select VHOST_RING
 	select VIRTIO
 	help

drivers/net/caif/Kconfig

@@ -50,7 +50,7 @@ config CAIF_HSI
 
 config CAIF_VIRTIO
 	tristate "CAIF virtio transport driver"
-	depends on CAIF && HAS_DMA && VHOST_DPN
+	depends on CAIF && HAS_DMA
 	select VHOST_RING
 	select VIRTIO
 	select GENERIC_ALLOCATOR

drivers/vdpa/Kconfig

@@ -10,7 +10,7 @@ if VDPA
 
 config VDPA_SIM
 	tristate "vDPA device simulator"
-	depends on RUNTIME_TESTING_MENU && HAS_DMA && VHOST_DPN
+	depends on RUNTIME_TESTING_MENU && HAS_DMA
 	select VHOST_RING
 	default n
 	help

drivers/vhost/Kconfig

@@ -13,15 +13,6 @@ config VHOST_RING
 	  This option is selected by any driver which needs to access
 	  the host side of a virtio ring.
 
-config VHOST_DPN
-	bool
-	depends on !ARM || AEABI
-	default y
-	help
-	  Anything selecting VHOST or VHOST_RING must depend on VHOST_DPN.
-	  This excludes the deprecated ARM ABI since that forces a 4 byte
-	  alignment on all structs - incompatible with virtio spec requirements.
-
 config VHOST
 	tristate
 	select VHOST_IOTLB
@@ -37,7 +28,7 @@ if VHOST_MENU
 
 config VHOST_NET
 	tristate "Host kernel accelerator for virtio net"
-	depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP) && VHOST_DPN
+	depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP)
 	select VHOST
 	---help---
 	  This kernel module can be loaded in host kernel to accelerate
@@ -49,7 +40,7 @@ config VHOST_NET
 
 config VHOST_SCSI
 	tristate "VHOST_SCSI TCM fabric driver"
-	depends on TARGET_CORE && EVENTFD && VHOST_DPN
+	depends on TARGET_CORE && EVENTFD
 	select VHOST
 	default n
 	---help---
@@ -58,7 +49,7 @@ config VHOST_SCSI
 
 config VHOST_VSOCK
 	tristate "vhost virtio-vsock driver"
-	depends on VSOCKETS && EVENTFD && VHOST_DPN
+	depends on VSOCKETS && EVENTFD
 	select VHOST
 	select VIRTIO_VSOCKETS_COMMON
 	default n
@@ -72,7 +63,7 @@ config VHOST_VSOCK
 
 config VHOST_VDPA
 	tristate "Vhost driver for vDPA-based backend"
-	depends on EVENTFD && VHOST_DPN
+	depends on EVENTFD
 	select VHOST
 	depends on VDPA
 	help