On Fri, Apr 17, 2020 at 11:12:14AM +0800, Jason Wang wrote:
>
> On 2020/4/17 上午6:55, Michael S. Tsirkin wrote:
> > On Wed, Apr 15, 2020 at 10:43:56AM +0800, Jason Wang wrote:
> > > We try to keep the defconfig untouched after decoupling CONFIG_VHOST
> > > out of CONFIG_VIRTUALIZATION in commit 20c384f1ea1a
> > > ("vhost: refine vhost and vringh kconfig") by enabling VHOST_MENU by
> > > default. Then the defconfigs can keep enabling CONFIG_VHOST_NET
> > > without the caring of CONFIG_VHOST.
> > >
> > > But this will leave a "CONFIG_VHOST_MENU=y" in all defconfigs and even
> > > for the ones that doesn't want vhost. So it actually shifts the
> > > burdens to the maintainers of all other to add "CONFIG_VHOST_MENU is
> > > not set". So this patch tries to enable CONFIG_VHOST explicitly in
> > > defconfigs that enables CONFIG_VHOST_NET and CONFIG_VHOST_VSOCK.
> > >
> > > Acked-by: Christian Borntraeger<borntraeger@xxxxxxxxxx> (s390)
> > > Acked-by: Michael Ellerman<mpe@xxxxxxxxxxxxxx> (powerpc)
> > > Cc: Thomas Bogendoerfer<tsbogend@xxxxxxxxxxxxxxxx>
> > > Cc: Benjamin Herrenschmidt<benh@xxxxxxxxxxxxxxxxxxx>
> > > Cc: Paul Mackerras<paulus@xxxxxxxxx>
> > > Cc: Michael Ellerman<mpe@xxxxxxxxxxxxxx>
> > > Cc: Heiko Carstens<heiko.carstens@xxxxxxxxxx>
> > > Cc: Vasily Gorbik<gor@xxxxxxxxxxxxx>
> > > Cc: Christian Borntraeger<borntraeger@xxxxxxxxxx>
> > > Reported-by: Geert Uytterhoeven<geert@xxxxxxxxxxxxxx>
> > > Signed-off-by: Jason Wang<jasowang@xxxxxxxxxx>
> > I rebased this on top of OABI fix since that
> > seems more orgent to fix.
> > Pushed to my vhost branch pls take a look and
> > if possible test.
> > Thanks!
>
>
> I test this patch by generating the defconfigs that wants vhost_net or
> vhost_vsock. All looks fine.
>
> But having CONFIG_VHOST_DPN=y may end up with the similar situation that
> this patch want to address.
> Maybe we can let CONFIG_VHOST depends on !ARM || AEABI then add another
> menuconfig for VHOST_RING and do something similar?
>
> Thanks
Sorry I don't understand. After this patch CONFIG_VHOST_DPN is just
an internal variable for the OABI fix. I kept it separate
so it's easy to revert for 5.8. Yes we could squash it into
VHOST directly but I don't see how that changes logic at all.
--
MST
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