From: "Luck, Tony" <tony.luck@intel.com>
To: Linus Torvalds <torvalds@linux-foundation.org>,
       Tim Abbott <tabbott@MIT.EDU>
CC: Sam Ravnborg <sam@ravnborg.org>,
       Linux kernel mailing list <linux-kernel@vger.kernel.org>,
       Anders Kaseorg <andersk@MIT.EDU>, Waseem Daher <wdaher@MIT.EDU>,
       Denys Vlasenko <vda.linux@googlemail.com>,
       Rusty Russell <rusty@rustcorp.com.au>, Andi Kleen <andi@firstfloor.org>,
       "H. Peter Anvin" <hpa@zytor.com>,
       Stephen Rothwell <sfr@canb.auug.org.au>, Jeff Arnold <jbarnold@MIT.EDU>,
       Andrew Morton <akpm@linux-foundation.org>,
       Jon Masters <jonathan@jonmasters.org>,
       Masami Hiramatsu <mhiramat@redhat.com>, "Theodore Ts'o" <tytso@MIT.EDU>,
       Nikanth Karthikesan <knikanth@suse.de>,
       Arjan van de Ven <arjan@infradead.org>,
       Paul Mundt <lethal@linux-sh.org>,
       =?iso-8859-1?Q?Am=E9rico_Wang?= <xiyou.wangcong@gmail.com>,
       Ralf Baechle <ralf@linux-mips.org>, Kyle McMartin <kyle@mcmartin.ca>,
       David Howells <dhowells@redhat.com>,
       Russell King <rmk+kernel@arm.linux.org.uk>
Date: Mon, 27 Apr 2009 10:29:49 -0700
Subject: RE: [PATCH 05/15] arm: convert to use __HEAD and HEAD_TEXT macros.
Thread-Topic: [PATCH 05/15] arm: convert to use __HEAD and HEAD_TEXT macros.
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>> Does .head.text actually need its own output section here?
>
> Probably not. Does the ARM build system massage the end result some way
> looking for that .text.head section in the end? As you note, nobody else
> cares, and the proper patch may be more along the lines of something
> below.

ia64 doesn't seem to care ... I changed the one use of .text.head
to be just .text.  There are a couple of new "section mismatches"
(start_ap -> start_secondary and start_ap -> start_kernel), but
it still boots.

> Of course, most other architectures put the "init" section at the end, and
> leave the HEAD_TEXT in the regular text section, but I suspect the ARM way
> of laying things out (init text first) is probably better, since it allows
> you to free that head code too.

The start_ap code is still needed for hotplug cpu on ia64. So .text.init
won't work for me.

-Tony
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