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From: Chris Wright <chrisw@osdl.org>
To: Andi Kleen <ak@suse.de>
Cc: zach@vmware.com, 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, zwane@arm.linux.org.uk
Subject: Re: [PATCH 8/14] i386 / Add a per cpu gdt accessor
Date: Tue, 16 Aug 2005 17:07:36 -0700	[thread overview]
Message-ID: <20050817000736.GU7762@shell0.pdx.osdl.net> (raw)
In-Reply-To: <20050816234725.GI27628@wotan.suse.de>

* Andi Kleen (ak@suse.de) wrote:
> On Wed, Aug 10, 2005 at 09:56:40PM -0700, zach@vmware.com wrote:
> > Add an accessor function for getting the per-CPU gdt.  Callee must already
> > have the CPU.
> 
> What is the accessor good for? 
> 
> It looks just like code obfuscation to me.

Xen handles gdt differently (one page per cpu instead of per_cpu data).
So this is for handling that access cleanly.

thanks,
-chris

  parent reply	other threads:[~2005-08-17  0:07 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-08-11  4:56 zach
2005-08-11  5:45 ` Zwane Mwaikambo
2005-08-11  5:40   ` Chris Wright
2005-08-11  5:43     ` H. Peter Anvin
2005-08-11  5:54       ` Chris Wright
2005-08-11  5:53   ` Zachary Amsden
2005-08-11  6:06     ` Zwane Mwaikambo
2005-08-16 23:47 ` Andi Kleen
2005-08-16 23:49   ` H. Peter Anvin
2005-08-17  0:07   ` Chris Wright [this message]
2005-08-17  0:16     ` Andi Kleen
2005-08-17  0:24       ` Chris Wright

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