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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen |
Date: | Mon, 21 Nov 2011 14:21:14 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:7.0.1) Gecko/20110930 Thunderbird/7.0.1 |
On 11/18/2011 03:54 PM, Anthony Liguori wrote:
The Right Solution would be to modify the RTC emulation such that it did a qemu_get_clock() during read of the CMOS registers in order to ensure the time was up to date (instead of using 1 second timers).
True, but you also have to handle UIP and the UF/AF interrupts. Basically you have to track the various pieces of state and trigger a timer when the routine would do something interesting. It's not hard, but it's also a decent amount of programming.
Paolo
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