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From: Zachary Amsden <zach@vmware.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Chris Wright <chrisw@sous-sol.org>, Andrew Morton <akpm@osdl.org>,
	Andi Kleen <ak@muc.de>, Thomas Gleixner <tglx@linutronix.de>,
	Virtualization Mailing List <virtualization@lists.osdl.org>,
	Ingo Molnar <mingo@elte.hu>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 9/10] Vmi timer update.patch
Date: Tue, 10 Apr 2007 15:28:06 -0700	[thread overview]
Message-ID: <461C0F76.1070308@vmware.com> (raw)
In-Reply-To: <461C0CB4.9000407@goop.org>

Jeremy Fitzhardinge wrote:
> Why not submit a patch to do what you need here?  (The Geode comment is
> a bit worrying though.)
>   

Why should VMI add workaround into PIT code?  PIT code wants to know 
nothing about VMI.  It understands PIT timers on hardware.  VMI, on the 
other hand, is special - it knows exactly what hardware platform it has 
and can manipulate hardware freely.  On a generic platform, surely touch 
PIT I/O ports would be quite ill behavior.  But side effects of that on 
a vastly restricted platform are predictable based on the hardware and 
kernel, and we would not add a workaround outside of VMI unless it was 
really necessary or generally useful.

Zach

  reply	other threads:[~2007-04-10 22:28 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-10  0:06 [PATCH 9/10] Vmi timer update.patch Zachary Amsden
2007-04-10  2:37 ` Chris Wright
2007-04-10 17:03   ` Zachary Amsden
2007-04-10 17:24     ` Chris Wright
2007-04-10 21:57       ` Zachary Amsden
2007-04-10 22:16         ` Jeremy Fitzhardinge
2007-04-10 22:28           ` Zachary Amsden [this message]
2007-04-10 22:38             ` Chris Wright
2007-04-10 22:28         ` Chris Wright
2007-04-10 22:59           ` Zachary Amsden
2007-04-12  1:19       ` Zachary Amsden

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