From: Anthony Liguori <aliguori@us.ibm.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: tgingold@free.fr, xen-devel@lists.xensource.com,
Mark Williamson <mark.williamson@cl.cam.ac.uk>
Subject: Re: Re: Improving hvm IO performance by using self IO emulator (YA io-emu?)
Date: Thu, 22 Feb 2007 18:12:47 -0600 [thread overview]
Message-ID: <45DE317F.6020106@us.ibm.com> (raw)
In-Reply-To: <20070223002628.4182db2d@lxorguk.ukuu.org.uk>
Alan wrote:
>> SATA can, yes. However, as you mention, SATA is very poorly supported.
>>
>
> By what - it works very nicely in current Linux kernels,
But it isn't supported by older kernels and most versions of Windows. A
major use of virtualization is running older operating systems so
depending on newer kernels is not really an option (if we have a new
kernel, we'd prefer to use a paravirtual driver anyway).
> including AHCI
> with NCQ and multiple outstanding commands. The fact Xen isn't merged
> and is living in prehistory is I'm afraid a Xen problem.
>
This discussion is independent of Xen. It's equally applicable to KVM
and QEMU so please don't assume this has anything to do with Xen's merge
status.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2007-02-23 0:12 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
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 [this message]
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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