linux-kernel - Re: [PATCH] Make lguest compile with CONFIG_BLOCK=n and CONFIG

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Date:	Mon, 30 Jul 2007 12:09:01 +0200
From:	Gabriel C <nix.or.die@...glemail.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Satyam Sharma <satyam.sharma@...il.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	lguest <lguest@...abs.org>
Subject: Re: [PATCH] Make lguest compile with CONFIG_BLOCK=n and	CONFIG_NET=n

Rusty Russell wrote:
> On Mon, 2007-07-30 at 06:18 +0530, Satyam Sharma wrote:
>> On 7/30/07, Rusty Russell <rusty@...tcorp.com.au> wrote:
>>> +config LGUEST_NET
>>> +       tristate
>>> +       depends on LGUEST_GUEST && NET
>> default y ?
> 
> Thanks, that does work better.  Clean configs get an "N" otherwise 8(
> 
>> I /think/ the default "y" would also automatically become "m" if any of the
>> dependencies are modules ... probably need to test this, though.
> 
> No, it doesn't seem to.  But LGUEST_GUEST is a bool anyway, so it's OK.
> 
> Thanks!
> Rusty.

Works fine this way.

BTW the wrong patch without the default y got merged.


> ==
> Make lguest compile with CONFIG_BLOCK=n and CONFIG_NET=n
> 
> Gabriel C reports lguest doesn't compile with CONFIG_BLOCK=n.  Fix
> this by introducing a config var for the block device, which depends
> on LGUEST && BLOCK.  Do the same for the net driver, rather then
> depending gratuitously on CONFIG_NET.
> 
> Signed-off-by: Rusty Russell <rusty@...tcorp.com.au>
> 
> diff -r 9e987fcabb16 drivers/block/Makefile
> --- a/drivers/block/Makefile	Mon Jul 30 09:47:25 2007 +1000
> +++ b/drivers/block/Makefile	Mon Jul 30 10:02:32 2007 +1000
> @@ -31,4 +31,4 @@ obj-$(CONFIG_BLK_DEV_UB)	+= ub.o
>  obj-$(CONFIG_BLK_DEV_UB)	+= ub.o
>  
>  obj-$(CONFIG_XEN_BLKDEV_FRONTEND)	+= xen-blkfront.o
> -obj-$(CONFIG_LGUEST_GUEST)	+= lguest_blk.o
> +obj-$(CONFIG_LGUEST_BLOCK)	+= lguest_blk.o
> diff -r 9e987fcabb16 drivers/lguest/Kconfig
> --- a/drivers/lguest/Kconfig	Mon Jul 30 09:47:25 2007 +1000
> +++ b/drivers/lguest/Kconfig	Mon Jul 30 10:03:39 2007 +1000
> @@ -1,6 +1,6 @@ config LGUEST
>  config LGUEST
>  	tristate "Linux hypervisor example code"
> -	depends on X86 && PARAVIRT && NET && EXPERIMENTAL && !X86_PAE
> +	depends on X86 && PARAVIRT && EXPERIMENTAL && !X86_PAE
>  	select LGUEST_GUEST
>  	select HVC_DRIVER
>  	---help---
> @@ -18,3 +18,13 @@ config LGUEST_GUEST
>  	  The guest needs code built-in, even if the host has lguest
>  	  support as a module.  The drivers are tiny, so we build them
>  	  in too.
> +
> +config LGUEST_NET
> +	tristate
> +	default y
> +	depends on LGUEST_GUEST && NET
> +
> +config LGUEST_BLOCK
> +	default y
> +	tristate
> +	depends on LGUEST_GUEST && BLOCK
> diff -r 9e987fcabb16 drivers/net/Makefile
> --- a/drivers/net/Makefile	Mon Jul 30 09:47:25 2007 +1000
> +++ b/drivers/net/Makefile	Mon Jul 30 10:02:22 2007 +1000
> @@ -177,7 +177,7 @@ obj-$(CONFIG_HPLANCE) += hplance.o 7990.
>  obj-$(CONFIG_HPLANCE) += hplance.o 7990.o
>  obj-$(CONFIG_MVME147_NET) += mvme147.o 7990.o
>  obj-$(CONFIG_EQUALIZER) += eql.o
> -obj-$(CONFIG_LGUEST_GUEST) += lguest_net.o
> +obj-$(CONFIG_LGUEST_NET) += lguest_net.o
>  obj-$(CONFIG_MIPS_JAZZ_SONIC) += jazzsonic.o
>  obj-$(CONFIG_MIPS_AU1X00_ENET) += au1000_eth.o
>  obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
> 
> 
> 
-
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