Re: [Xen-devel] [Qemu-devel] [PATCH 1/4] xen: introduce mc146818rtcxen

[Avi Kivity <avi@xxxxxxxxxx>]

On 11/18/2011 04:54 PM, Anthony Liguori wrote:
>
> Thinking more about it, I think this entire line of thinking is wrong
> (including mine) :-)
>
> The problem you're trying to solve is that the RTC fires two 1 second
> timers regardless of whether the guest is reading the wall clock time,
> right?  And since wall clock time is never read from the QEMU RTC in
> Xen, it's a huge waste?
>
> 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).
>
> Then the timers wouldn't even exist anymore.

That would make host time adjustments (suspend/resume) be reflected in
the guest.

Not sure if that's good or bad, but it's different.

-- 
error compiling committee.c: too many arguments to function


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