linux-kernel - RE: [PATCH 02/10] linker script: throw away .discard section

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Date:	Wed, 24 Jun 2009 10:20:17 -0700
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Tejun Heo <tj@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	"mingo@...e.hu" <mingo@...e.hu>,
	"kyle@...artin.ca" <kyle@...artin.ca>,
	"cl@...ux-foundation.org" <cl@...ux-foundation.org>,
	"Jesper.Nilsson@...s.com" <Jesper.Nilsson@...s.com>,
	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	"paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
CC:	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Richard Henderson <rth@...ddle.net>,
	Russell King <linux@....linux.org.uk>,
	Haavard Skinnemoen <hskinnemoen@...el.com>,
	Bryan Wu <cooloney@...nel.org>,
	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>,
	David Howells <dhowells@...hat.com>,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	Hirokazu Takata <takata@...ux-m32r.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Michal Simek <monstr@...str.eu>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Paul Mackerras <paulus@...ba.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Paul Mundt <lethal@...ux-sh.org>,
	"David S. Miller" <davem@...emloft.net>,
	Jeff Dike <jdike@...toit.com>, Chris Zankel <chris@...kel.net>
Subject: RE: [PATCH 02/10] linker script: throw away .discard section

> x86 throws away .discard section but no other archs do.  Also,
> .discard is not thrown away while linking modules.  Make every arch
> and module linking throw it away.  This will be used to define dummy
> variables for percpu declarations and definitions.

Seems harmless on ia64.  Kernel still builds, boots and loads
modules.

Tested-by: Tony Luck <tony.luck@...el.com>

-Tony
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