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Re: [Qemu-devel] Re: [PATCH] re-set rtc date on reset handler


From: Anthony Liguori
Subject: Re: [Qemu-devel] Re: [PATCH] re-set rtc date on reset handler
Date: Wed, 09 Sep 2009 13:50:05 -0500
User-agent: Thunderbird 2.0.0.23 (X11/20090825)

Gleb Natapov wrote:
On Wed, Sep 09, 2009 at 12:52:12PM -0500, Anthony Liguori wrote:
Gleb Natapov wrote:
What is "catchup" and what is "gradual"?
Just placeholders to point out that there are different algorithms
to replaying interrupts to a guest.  I called what we implemented
"catchup" since we pretty much immediately send all of the missed
ticks to the guest in order to catch-up.

I'd imagine that a 'gradual' algorithm would shorten the tick
interval until you've caught up.  The Hyper-V paravirtualization
manual has provisions for the guest to request what type of
algorithm is used so it makes sense to accommodate this in our
syntax.

We implement gradual then.

You're right.

Regards,

Anthony Liguori




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