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From: Andi Kleen <ak@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: bwalle@suse.de, kexec@lists.infradead.org, ak@suse.de,
	linux-kernel@vger.kernel.org, vgoyal@in.ibm.com,
	Sam Ravnborg <sam@ravnborg.org>
Subject: Re: [patch 1/3] Add BSS to resource tree
Date: Fri, 19 Oct 2007 00:45:51 +0200	[thread overview]
Message-ID: <20071018224550.GD3459@bingen.suse.de> (raw)
In-Reply-To: <20071018153751.c9c458c8.akpm@linux-foundation.org>

On Thu, Oct 18, 2007 at 03:37:51PM -0700, Andrew Morton wrote:
> On Fri, 19 Oct 2007 00:18:13 +0200
> Sam Ravnborg <sam@ravnborg.org> wrote:
> 
> > And I recall that extern char sym[] is considered correct by binutils 
> > people - but I'm not 100% sure and google did not give me an appropriate hit.
> 
> An ancient memory tells me that these things are traditionally
> declared as plain old int:
> 
> extern int start;
> extern int edata;

int is probably one of the less useful types. Typical operation is computing
the difference between two symbols in bytes. &int without cast would give
you a useless scaled size.

-Andi


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WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@suse.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Sam Ravnborg <sam@ravnborg.org>,
	ak@suse.de, bwalle@suse.de, linux-kernel@vger.kernel.org,
	kexec@lists.infradead.org, vgoyal@in.ibm.com
Subject: Re: [patch 1/3] Add BSS to resource tree
Date: Fri, 19 Oct 2007 00:45:51 +0200	[thread overview]
Message-ID: <20071018224550.GD3459@bingen.suse.de> (raw)
In-Reply-To: <20071018153751.c9c458c8.akpm@linux-foundation.org>

On Thu, Oct 18, 2007 at 03:37:51PM -0700, Andrew Morton wrote:
> On Fri, 19 Oct 2007 00:18:13 +0200
> Sam Ravnborg <sam@ravnborg.org> wrote:
> 
> > And I recall that extern char sym[] is considered correct by binutils 
> > people - but I'm not 100% sure and google did not give me an appropriate hit.
> 
> An ancient memory tells me that these things are traditionally
> declared as plain old int:
> 
> extern int start;
> extern int edata;

int is probably one of the less useful types. Typical operation is computing
the difference between two symbols in bytes. &int without cast would give
you a useless scaled size.

-Andi


  reply	other threads:[~2007-10-18 22:46 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-18 11:15 [patch 0/3] Protect crashkernel against BSS overlap Bernhard Walle
2007-10-18 11:15 ` Bernhard Walle
2007-10-18 11:15 ` [patch 1/3] Add BSS to resource tree Bernhard Walle
2007-10-18 11:15   ` Bernhard Walle
2007-10-18 21:26   ` Andrew Morton
2007-10-18 21:26     ` Andrew Morton
2007-10-18 21:48     ` Andi Kleen
2007-10-18 21:48       ` Andi Kleen
2007-10-18 21:58       ` Sam Ravnborg
2007-10-18 21:58         ` Sam Ravnborg
2007-10-18 22:00         ` Andi Kleen
2007-10-18 22:00           ` Andi Kleen
2007-10-18 22:18           ` Sam Ravnborg
2007-10-18 22:18             ` Sam Ravnborg
2007-10-18 22:20             ` Andi Kleen
2007-10-18 22:20               ` Andi Kleen
2007-10-18 22:37             ` Andrew Morton
2007-10-18 22:37               ` Andrew Morton
2007-10-18 22:45               ` Andi Kleen [this message]
2007-10-18 22:45                 ` Andi Kleen
2007-10-19  0:27             ` Jeremy Fitzhardinge
2007-10-19  0:27               ` Jeremy Fitzhardinge
2007-10-19 12:52     ` Bernhard Walle
2007-10-19 12:52       ` Bernhard Walle
2007-10-19 14:48     ` Bernhard Walle
2007-10-19 14:48       ` Bernhard Walle
2007-10-19 14:48       ` Bernhard Walle
2007-10-18 11:15 ` [patch 2/3] Introduce BOOTMEM_EXCLUSIVE Bernhard Walle
2007-10-18 11:15   ` Bernhard Walle
2007-10-18 11:15 ` [patch 3/3] Use BOOTMEM_EXCLUSIVE on x86 Bernhard Walle
2007-10-18 11:15   ` Bernhard Walle
  -- strict thread matches above, loose matches on Subject: below --
2007-10-16 16:28 [patch 0/3] Protect crashkernel against BSS overlap Bernhard Walle
2007-10-16 16:28 ` [patch 1/3] Add BSS to resource tree Bernhard Walle
2007-10-16 16:28   ` Bernhard Walle

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