From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH 0/4] i386 - pte update optimizations
Date: Thu, 12 Apr 2007 18:25:05 -0700
Message-ID: <461EDBF1.4080904@zytor.com>
References: <200704120530.l3C5UGbv022814@zach-dev.vmware.com>
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To: Zachary Amsden <zach@vmware.com>
Cc: Andrew Morton <akpm@osdl.org>, Andi Kleen <ak@muc.de>, Virtualization Mailing List <virtualization@lists.osdl.org>, Chris Wright <chrisw@sous-sol.org>, David Rientjes <rientjes@google.com>, Hugh Dickins <hugh@veritas.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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Zachary Amsden wrote:
> Some PTE optimizations for native and paravirt-ops kernels; this
> provides a huge win for shadow mode hypervisors and gets rid of
> some unnecessary atomic instructions in native kernels, saving
> even more on UP by getting rid of implicit LOCK on xchg instruction.

You do know that P6 and higher don't do locked bus references as long as =

the value is in the cache, right?

	-hpa