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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] [PATCH] Time drift again.
Date: Tue, 16 Dec 2008 12:33:30 +0000
References: <20081216122511.GE13794@redhat.com>
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To: qemu-devel@nongnu.org
Cc: Gleb Natapov <gleb@redhat.com>

On Tuesday 16 December 2008, Gleb Natapov wrote:
> Hello,
>
>  After my last patch to fix interrupt coalescing was rejected
> on the basis that it is too intrusive we decided to make the
> fix much more localized and only fix the problem for RTC time
> source. Unfortunately it is impossible to fix the problem entirely
> inside RTC code like Andrzej proposed since Windows reads RTC
> register C more then once on each time interrupt so it is impossible
> to count reliably how many interrupt windows actually handled.
> Proposed solution is localized to I386 target and is disabled by
> default. To enable it "-rtc-td-hack" flag should be used.

You need documentation for the new option.

Paul