linux-kernel - Re: [kvm-devel] kvm & dyntick

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Message-Id: <1168645199.2941.32.camel@localhost.localdomain>
Date:	Sat, 13 Jan 2007 00:39:59 +0100
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Dor Laor <dor.laor@...ranet.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Avi Kivity <avik@...ranet.com>,
	kvm-devel <kvm-devel@...ts.sourceforge.net>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [kvm-devel] kvm & dyntick

On Fri, 2007-01-12 at 15:25 -0800, Dor Laor wrote:
> This is great news for PV guests.
> 
> Never-the-less we still need to improve our full virtualized guest
> support. 

Full virtualized guests, which have their own dyntick support, are fine
as long as we provide local apic emulation for them.

If a guest does not have that, it will use the periodic mode. There is
no way to circumvent this. We do not know, whether the guest relies on
that periodic interrupt or not.

	tglx


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