linux-kernel - Re: [RELEASE] Lguest for 2.6.21

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Date:	Thu, 03 May 2007 14:20:32 +1000
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	WANG Cong <xiyou.wangcong@...il.com>
Cc:	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>,
	virtualization <virtualization@...ts.linux-foundation.org>
Subject: Re: [RELEASE] Lguest for 2.6.21

On Thu, 2007-05-03 at 11:57 +0800, WANG Cong wrote:
> On Thu, May 03, 2007 at 09:00:48AM +1000, Rusty Russell wrote:
> >	Thanks for the patch.  This omission (in several places) was
> >deliberate.  We can't really do anything sensible if the user unmapped
> >the page.  I assume you saw a gcc warning from this code?
> 
> Yes. In fact, I got two warnings, another one is in drivers/lguest/hypercalls.c.
> 
> If I understand you correctly, you mean we can do nothing useful to fix it?

We can, but we can ignore those warnings for the moment; they're
harmless.

> I have sent a mail which described the errors I got when comipling
> Documentation/lguest/lguest.c. But it seems that you didn't receive it
> (it didn't appear in lkml.org neither!).

Hmm, no, I didn't get it here either 8(

>  It is that, I have already made my .config as you suggested, but I
> still can't compile Documentation/lguest/lguest.c, errors are:
> 
> lguest.c: In function 'add_to_bridge':
> lguest.c:779: error: 'SIOCBRADDIF' undeclared (first use in this function)
> lguest.c:779: error: (Each undeclared identifier is reported only once
> lguest.c:779: error: for each function it appears in.)

Ah, perhaps older libc headers?  Can you try adding this to the top of
Documentation/lguest/lguest.c after the #define BRIDGE_PFX "bridge:"

#ifndef SIOCBRADDIF
#define SIOCBRADDIF	0x89a2		/* add interface to bridge      */
#endif

Thanks,
Rusty.

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