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

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Message-ID: <20200402100257-mutt-send-email-mst@kernel.org>
Date:   Thu, 2 Apr 2020 10:03:21 -0400
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        jgg@...lanox.com, maxime.coquelin@...hat.com,
        cunming.liang@...el.com, zhihong.wang@...el.com,
        rob.miller@...adcom.com, xiao.w.wang@...el.com,
        lingshan.zhu@...el.com, eperezma@...hat.com, lulu@...hat.com,
        parav@...lanox.com, kevin.tian@...el.com, stefanha@...hat.com,
        rdunlap@...radead.org, hch@...radead.org, aadam@...hat.com,
        jiri@...lanox.com, shahafs@...lanox.com, hanand@...inx.com,
        mhabets@...arflare.com, gdawar@...inx.com, saugatm@...inx.com,
        vmireyno@...vell.com, zhangweining@...jie.com.cn
Subject: Re: [PATCH V9 1/9] vhost: refine vhost and vringh kconfig

On Thu, Apr 02, 2020 at 11:22:57AM +0800, Jason Wang wrote:
> 
> 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@...hat.com>
> > > 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@...hat.com>
> > > ---
> > >   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


I'm a bit confused. So is the next tag in my tree ok now?

-- 
MST