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Re: [Xen-devel] [RFC][PATCH 12/13] Kemari: use signal to save qemu state

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [RFC][PATCH 12/13] Kemari: use signal to save qemu state for Kemari
From: Yoshiaki Tamura <tamura.yoshiaki@xxxxxxxxxxxxx>
Date: Thu, 19 Mar 2009 14:54:41 +0900
Cc: "ospk-vm@xxxxxxxxxxxxx" <ospk-vm@xxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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Keir Fraser wrote:
On 18/03/2009 12:46, "Stefano Stabellini" <Stefano.Stabellini@xxxxxxxxxxxxx>
wrote:
Using an event channel to notify qemu in a stubdom that a particular
event occurred improves things a lot: it is even faster than signals!

event channel: 20880

performances using an event channel with qemu as a process in dom0 are
about the same.

An event channel is the way to go I think.


I agree.
We'll update the patches.

Yoshi

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