linux-kernel - Re: [tip:x86/vdso] x86, vsyscall: Add missing <asm/fixmap.h> to arch/x86/mm/fault.c

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Date:	Tue, 16 Aug 2011 10:23:14 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org, tglx@...utronix.de,
	rdunlap@...otime.net, hpa@...ux.intel.com
Cc:	"tip-bot for H. Peter Anvin" <hpa@...ux.intel.com>,
	linux-tip-commits@...r.kernel.org, linux-kernel@...r.kernel.org,
	hpa@...or.com, mingo@...hat.com, torvalds@...ux-foundation.org,
	tglx@...utronix.de
Subject: Re: [tip:x86/vdso] x86, vsyscall: Add missing <asm/fixmap.h> to
 arch/x86/mm/fault.c

On Tue, 16 Aug 2011 15:27:18 GMT tip-bot for H. Peter Anvin wrote:

> Commit-ID:  fab1167c4698e3ff11ebb06281d78def6c53728b
> Gitweb:     http://git.kernel.org/tip/fab1167c4698e3ff11ebb06281d78def6c53728b
> Author:     H. Peter Anvin <hpa@...ux.intel.com>
> AuthorDate: Mon, 15 Aug 2011 22:28:56 -0700
> Committer:  H. Peter Anvin <hpa@...ux.intel.com>
> CommitDate: Tue, 16 Aug 2011 08:04:02 -0700
> 
> x86, vsyscall: Add missing <asm/fixmap.h> to arch/x86/mm/fault.c
> 
> arch/x86/mm/fault.c now depend on having the symbol VSYSCALL_START
> defined, which is best handled by including <asm/fixmap.h> (it isn't
> unreasonable we may want other fixed addresses in this file in the
> future, and so it is cleaner than including <asm/vsyscall.h>
> directly.)
> 
> This addresses an x86-64 allnoconfig build failure.  On other
> configurations it was masked by an indirect path:
> 
> <asm/smp.h> -> <asm/apic.h> -> <asm/fixmap.h> -> <asm/vsyscall.h>
> 
> ... however, the first such include is conditional on CONFIG_X86_LOCAL_APIC.
> 
> Originally-by: Randy Dunlap <rdunlap@...otime.net>
> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
> Link: http://lkml.kernel.org/r/CA%2B55aFxsOMc9=p02r8-QhJ=h=Mqwckk4_Pnx9LQt5%2BfqMp_exQ@mail.gmail.com

That link gives me:
"No such Message-ID known"

> Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
> ---
>  arch/x86/mm/fault.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
> index 247aae3..f2d4c9d 100644
> --- a/arch/x86/mm/fault.c
> +++ b/arch/x86/mm/fault.c
> @@ -17,6 +17,7 @@
>  #include <asm/traps.h>			/* dotraplinkage, ...		*/
>  #include <asm/pgalloc.h>		/* pgd_*(), ...			*/
>  #include <asm/kmemcheck.h>		/* kmemcheck_*(), ...		*/
> +#include <asm/fixmap.h>			/* VSYSCALL_START		*/

Nit:  asm/fixmap.h does not provide VSYSCALL_START.  whatever.
>  
>  /*
>   * Page fault error code bits:
> --


---
~Randy
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