linux-kernel - Re: + espfix-code-cleanup.patch added to -mm tree

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Message-Id: <44CF84C4.76E4.0078.0@novell.com>
Date:	Tue, 01 Aug 2006 16:43:48 +0200
From:	"Jan Beulich" <jbeulich@...ell.com>
To:	"Stas Sergeev" <stsp@...et.ru>
Cc:	<76306.1226@...puserve.com>, <rohitseth@...gle.com>, <ak@....de>,
	<akpm@...l.org>, "Linux kernel" <linux-kernel@...r.kernel.org>,
	"Zachary Amsden" <zach@...are.com>
Subject: Re: + espfix-code-cleanup.patch added to -mm tree

>>> Well, someone used that macro in a .fixup section, where the
>>> CFI adjustments do not seem to work. But since I don't know
>>> why this was done (Jan?), I reverted that to my original code and
>>> added the adjustments now.
>> The macro in question is UNWIND_ESPFIX_STACK, which is used in
exactly
>No, that was about FIXUP_ESPFIX_STACK in fact.
>
>> Even more, the macro itself switches to .fixup,
>... where it uses FIXUP_ESPFIX_STACK. I haven't done that.
>Someone else added the .fixup section to UNWIND_ESPFIX_STACK,
>and so the FIXUP_ESPFIX_STACK became used in that section.
>I removed that now with my patch, unless someone can tell
>me why it was needed.

That was me, in order to get the unwind annotations right without
complicating the code too much. Again, FIXUP_ESPFIX_STACK doesn't
use any unwind directives so can be used anywhere, including the
.fixup section UNWIND_ESPFIX_STACK switches to.

Jan
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