From: Tristan Gingold <tgingold@free.fr>
To: Mark Williamson <mark.williamson@cl.cam.ac.uk>
Cc: tgingold@free.fr, Anthony Liguori <aliguori@us.ibm.com>,
xen-devel@lists.xensource.com
Subject: Re: Re: Improving hvm IO performance by using self IO emulator (YA io-emu?)
Date: Sat, 24 Feb 2007 07:19:36 +0100 [thread overview]
Message-ID: <20070224061936.GD2508@saphi> (raw)
In-Reply-To: <200702222141.20969.mark.williamson@cl.cam.ac.uk>
On Thu, Feb 22, 2007 at 09:41:20PM +0000, Mark Williamson wrote:
> While I'm thinking about it, I wonder how returning to the guest from the
> emulator would work...
>
> We'd want to hypercall to transfer back to it... do we need specific Xen
> support for this or could (for instance) Gerd's work on domU kexec be
> leveraged here?
>
> Perhaps it would be worth evaluating some kind of "send these events and then
> switch back to guest code" hypercall so that the emulator doesn't have to
> bounce in and out of Xen so much. Remains to be seen whether this makes much
> diffecence to overall performance but it seems somehow civilised ;-)
For sure, there are a lot of possible minor optimization points...
Tristan.
next prev parent reply other threads:[~2007-02-24 6:19 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-22 5:23 Improving hvm IO performance by using self IO emulator (YA io-emu?) Tristan Gingold
2007-02-22 7:59 ` Keir Fraser
2007-02-22 9:33 ` tgingold
2007-02-22 10:23 ` Keir Fraser
2007-02-22 10:34 ` Improving hvm IO performance by using self IO emulator(YA io-emu?) Guy Zana
2007-02-22 16:06 ` Improving hvm IO performance by using self IO emulator (YA io-emu?) Anthony Liguori
2007-02-22 20:58 ` tgingold
2007-02-22 21:23 ` Anthony Liguori
2007-02-22 21:41 ` Mark Williamson
2007-02-24 6:19 ` Tristan Gingold [this message]
2007-02-24 6:07 ` Tristan Gingold
2007-02-22 21:24 ` Mark Williamson
2007-02-22 21:33 ` Anthony Liguori
2007-02-23 0:15 ` Mark Williamson
2007-02-23 0:26 ` Alan
2007-02-23 0:12 ` Anthony Liguori
2007-02-23 12:57 ` Alan
2007-02-23 18:56 ` Anthony Liguori
2007-02-24 6:17 ` Tristan Gingold
2007-02-23 0:32 ` Alan
2007-02-24 6:12 ` Tristan Gingold
2007-02-27 12:14 ` Mark Williamson
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