linux-kernel - Re: x86: get rid of the insane TIF_ABI

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Message-Id: <20100215210539.B0D0B553@magilla.sf.frob.com>
Date:	Mon, 15 Feb 2010 13:05:39 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Oleg Nesterov <oleg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: x86: get rid of the insane TIF_ABI_PENDING bit

> FWIW, the origin of this is checkin
> 4d9bc79cd28b779610d9590b3a96a28a0f64a25a (2.6.18-rc1), which somewhat
> unhelpfully states "Make sure is_compat_task works early".  It doesn't
> specify what the failure is if is_compat_task doesn't work early.  

I can't figure out what could care.  Maybe at the time something else
tested it that doesn't do so now.

> On the other hand, it sure as heck seems better to set it and not need it
> than the other way around.

Agreed.


Thanks,
Roland
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