linux-kernel - Re: linux-next: Tree for Feb 13 (virtio

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Message-Id: <20130215105519.1d8de65d4f9195eeb9306c13@canb.auug.org.au>
Date:	Fri, 15 Feb 2013 10:55:19 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Greg KH <greg@...ah.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, Amit Shah <amit.shah@...hat.com>,
	virtualization@...ts.linux-foundation.org,
	Randy Dunlap <rdunlap@...radead.org>
Subject: Re: linux-next: Tree for Feb 13 (virtio_console)

Hi Greg,

The patch below is needed in the tty tree (which introduced CONFIG_TTY).

Also, has someone checked to see if any of the CONFIG_ symbols that had a
dependency on TTY added are selected anywhere else?

On Thu, 14 Feb 2013 10:55:06 -0800 Randy Dunlap <rdunlap@...radead.org> wrote:
>
> On 02/14/13 10:45, Randy Dunlap wrote:
> > On 02/13/13 19:00, Rusty Russell wrote:
> >> Randy Dunlap <rdunlap@...radead.org> writes:
> >>
> >>> On 02/13/13 00:35, Stephen Rothwell wrote:
> >>>> Hi all,
> >>>>
> >>>> Changes since 20130212:
> >>>
> >>> on i386:
> >>>
> >>> drivers/built-in.o: In function `in_intr':
> >>> virtio_console.c:(.text+0x2dd31): undefined reference to `hvc_poll'
> >>> virtio_console.c:(.text+0x2dd41): undefined reference to `hvc_kick'
> >>> drivers/built-in.o: In function `resize_console':
> >>> virtio_console.c:(.text+0x2e26f): undefined reference to `__hvc_resize'
> >>> drivers/built-in.o: In function `unplug_port':
> >>> virtio_console.c:(.text+0x2e572): undefined reference to `hvc_remove'
> >>> drivers/built-in.o: In function `init_port_console':
> >>> (.text+0x2fe59): undefined reference to `hvc_alloc'
> >>> drivers/built-in.o: In function `virtio_cons_early_init':
> >>> (.init.text+0x16d1): undefined reference to `hvc_instantiate'
> >>>
> >>>
> >>> Full randconfig file is attached.
> >>
> >> This looks like an impossible config.  CONFIG_VIRTIO_CONSOLE=y, but
> >> CONFIG_HVC_DRIVER isn't set.
> >>
> >> From drivers/char/Kconfig:
> >>
> >>         config VIRTIO_CONSOLE
> >>         	tristate "Virtio console"
> >>         	depends on VIRTIO
> >>         	select HVC_DRIVER
> >>
> >> ???
> > 
> > OK.  It's probably yet another stinking problem with kvmtool and randconfig.
> > Running *config reports:
> > 
> > warning: (KVMTOOL_TEST_ENABLE && LGUEST_GUEST) selects VIRTIO_CONSOLE which has unmet direct dependencies (VIRTIO && TTY)
> > 
> > 
> > I'll look a bit more...
> 
> Nope, that's not it.  Stephen's comments were much closer.
> 
> The patch below fixes the kconfig warning and the build errors.
> ---
> 
> 
> 
> From: Randy Dunlap <rdunlap@...radead.org>
> 
> Fix kconfig warning for LGUEST_GUEST config by selecting TTY:
> 
> warning: (KVMTOOL_TEST_ENABLE && LGUEST_GUEST) selects VIRTIO_CONSOLE which has unmet direct dependencies (VIRTIO && TTY)
> 
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
> ---
>  arch/x86/lguest/Kconfig |    1 +
>  1 file changed, 1 insertion(+)
> 
> --- linux-next-20130213.orig/arch/x86/lguest/Kconfig
> +++ linux-next-20130213/arch/x86/lguest/Kconfig
> @@ -2,6 +2,7 @@ config LGUEST_GUEST
>  	bool "Lguest guest support"
>  	select PARAVIRT
>  	depends on X86_32
> +	select TTY
>  	select VIRTUALIZATION
>  	select VIRTIO
>  	select VIRTIO_CONSOLE

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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