linux-kernel - Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv

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Message-ID: <alpine.DEB.2.02.1512221142200.3096@kaball.uk.xensource.com>
Date:	Tue, 22 Dec 2015 11:49:46 +0000
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	kbuild test robot <fengguang.wu@...el.com>,
	Sasha Levin <sasha.levin@...cle.com>, <kbuild-all@...org>,
	<linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	David Vrabel <david.vrabel@...rix.com>,
	<boris.ostrovsky@...cle.com>
Subject: Re: arch/x86/xen/suspend.c:70:9: error: implicit declaration of
 function 'xen_pv_domain'

On Mon, 21 Dec 2015, Andrew Morton wrote:
> On Mon, 21 Dec 2015 00:43:17 +0800 kbuild test robot <fengguang.wu@...el.com> wrote:
> 
> > First bad commit (maybe != root cause):
> > 
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   69c37a92ddbf79d9672230f21a04580d7ac2f4c3
> > commit: 71458cfc782eafe4b27656e078d379a34e472adf kernel: add support for gcc 5
> > date:   1 year, 2 months ago
> > config: x86_64-randconfig-x006-201551 (attached as .config)
> > reproduce:
> >         git checkout 71458cfc782eafe4b27656e078d379a34e472adf
> >         # save the attached .config to linux build tree
> >         make ARCH=x86_64 
> > 
> > All errors (new ones prefixed by >>):
> > 
> >    arch/x86/xen/suspend.c: In function 'xen_arch_pre_suspend':
> > >> arch/x86/xen/suspend.c:70:9: error: implicit declaration of function 'xen_pv_domain' [-Werror=implicit-function-declaration]
> >         if (xen_pv_domain())
> >             ^
> 
> hm, tricky!
> 
> --- a/arch/x86/xen/suspend.c~arch-x86-xen-suspendc-include-xen-xenh
> +++ a/arch/x86/xen/suspend.c
> @@ -1,6 +1,7 @@
>  #include <linux/types.h>
>  #include <linux/tick.h>
>  
> +#include <xen/xen.h>
>  #include <xen/interface/xen.h>
>  #include <xen/grant_table.h>
>  #include <xen/events.h>


Looks like the right fix. David? Boris?
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