From: Linus Torvalds <torvalds@osdl.org>
To: David Howells <dhowells@redhat.com>, Richard Henderson <rth@twiddle.net>
Cc: Andrew Morton <akpm@osdl.org>,
Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] get rid of "+m" constraint in i386 rwsems
Date: Thu, 6 May 2004 07:42:51 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.58.0405060740200.3271@ppc970.osdl.org> (raw)
In-Reply-To: <4955.1083844733@redhat.com>
On Thu, 6 May 2004, David Howells wrote:
>
> Here's a patch to remove the usage of a "+m" constraint in the i386 optimised
> rwsem implementation.
I think this is wrong, and I thought the gcc people (well, rth seemed to
imply it was a no-brainer) already agreed to support "+m" since:
- it has long been documented
- it should be trivial to expand _internally_ in gcc if some
implementation thing makes gcc prefer the "=m" / "m" combination.
Richard?
If it's just a warning in 3.4, and later gcc's are supposed to make it ok
again, then..
Linus
next prev parent reply other threads:[~2004-05-06 14:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-06 11:58 David Howells
2004-05-06 12:18 ` Russell King
2004-05-06 12:58 ` David Howells
2004-05-06 13:24 ` Russell King
2004-05-06 19:23 ` Horst von Brand
2004-05-06 14:42 ` Linus Torvalds [this message]
2004-05-06 23:45 ` Richard Henderson
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