From: Andi Kleen <ak@suse.de>
To: zach@vmware.com
Cc: akpm@osdl.org, chrisl@vmware.com, chrisw@osdl.org, hpa@zytor.com,
Keir.Fraser@cl.cam.ac.uk, linux-kernel@vger.kernel.org,
m+Ian.Pratt@cl.cam.ac.uk, mbligh@mbligh.org, pratap@vmware.com,
virtualization@lists.osdl.org, zwame@arm.linux.org.uk
Subject: Re: [PATCH 5/14] i386 / Use early clobber to eliminate rotate in desc
Date: Wed, 17 Aug 2005 01:45:14 +0200 [thread overview]
Message-ID: <20050816234514.GG27628@wotan.suse.de> (raw)
In-Reply-To: <200508110454.j7B4sBDK019538@zach-dev.vmware.com>
On Wed, Aug 10, 2005 at 09:54:11PM -0700, zach@vmware.com wrote:
> Use an early clobber on addr to avoid the extra rorl instruction at the
> end of _set_tssldt_desc.
I would suggest to just use C for this. I do this on x86-64 and
I don't think there is any reason to use this hard to maintain
code for it.
It's probably a left over from Linus first experiments with inline
assembly, similar to the old string.h and by now so obsolete
it doesn't even stink anymore.
-Andi
next prev parent reply other threads:[~2005-08-16 23:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-11 4:54 zach
2005-08-16 23:45 ` Andi Kleen [this message]
2005-08-16 23:56 ` Zachary Amsden
2005-08-17 0:06 ` H. Peter Anvin
2005-08-17 14:22 ` Alan Cox
2005-08-17 15:54 ` H. Peter Anvin
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