Re: [PATCH V9 1/9] vhost: refine vhost and vringh kconfig

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On 2020/4/2 上午12:08, Michael S. Tsirkin wrote:
On Wed, Apr 01, 2020 at 10:29:32PM +0800, Jason Wang wrote:
>From 9b3a5d23b8bf6b0a11e65e688335d782f8e6aa5c Mon Sep 17 00:00:00 2001
From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Wed, 1 Apr 2020 22:17:27 +0800
Subject: [PATCH] vhost: let CONFIG_VHOST to be selected by drivers

The defconfig on some archs enable vhost_net or vhost_vsock by
default. So instead of adding CONFIG_VHOST=m to all of those files,
simply letting CONFIG_VHOST to be selected by all of the vhost
drivers. This fixes the build on the archs with CONFIG_VHOST_NET=m in
their defconfig.

Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
---
  drivers/vhost/Kconfig | 15 +++++++++++----
  1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
index 2523a1d4290a..362b832f5338 100644
--- a/drivers/vhost/Kconfig
+++ b/drivers/vhost/Kconfig
@@ -11,19 +11,23 @@ config VHOST_RING
  	  This option is selected by any driver which needs to access
  	  the host side of a virtio ring.
-menuconfig VHOST
-	tristate "Host kernel accelerator for virtio (VHOST)"
-	depends on EVENTFD
+config VHOST
+	tristate
  	select VHOST_IOTLB
  	help
  	  This option is selected by any driver which needs to access
  	  the core of vhost.
-if VHOST
+menuconfig VHOST_MENU
+	bool "VHOST drivers"
+	default y
+
+if VHOST_MENU
config VHOST_NET
  	tristate "Host kernel accelerator for virtio net"
  	depends on NET && EVENTFD && (TUN || !TUN) && (TAP || !TAP)
+	select VHOST
  	---help---
  	  This kernel module can be loaded in host kernel to accelerate
  	  guest networking with virtio_net. Not to be confused with virtio_net
@@ -35,6 +39,7 @@ config VHOST_NET
  config VHOST_SCSI
  	tristate "VHOST_SCSI TCM fabric driver"
  	depends on TARGET_CORE && EVENTFD
+	select VHOST
  	default n
  	---help---
  	Say M here to enable the vhost_scsi TCM fabric module
@@ -43,6 +48,7 @@ config VHOST_SCSI
  config VHOST_VSOCK
  	tristate "vhost virtio-vsock driver"
  	depends on VSOCKETS && EVENTFD
+	select VHOST
  	select VIRTIO_VSOCKETS_COMMON
  	default n
  	---help---
@@ -56,6 +62,7 @@ config VHOST_VSOCK
  config VHOST_VDPA
  	tristate "Vhost driver for vDPA-based backend"
  	depends on EVENTFD
+	select VHOST


This part is not squashed.


  	select VDPA
  	help
  	  This kernel module can be loaded in host kernel to accelerate
OK so I squashed this into the original buggy patch.
Could you please play with vhost branch of my tree on various
arches? If it looks ok to you let me know I'll push
this to next.


With the above part squashed. I've tested all the archs whose defconfig have VHOST_NET or VHOST_VSOCK enabled.

All looks fine.

Thanks

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