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RE: [Xen-devel] about vmx_intercept.c

To: "Miao Feng" <miaofeng@xxxxxxxxxxxxxxxx>, <Xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] about vmx_intercept.c
From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
Date: Wed, 25 May 2005 16:48:44 +0800
Delivery-date: Wed, 25 May 2005 08:48:11 +0000
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Thread-index: AcVhBap/elbYTssITSCE4iJu6EdELAAAC4tg
Thread-topic: [Xen-devel] about vmx_intercept.c
The vmx_intercept.c is to intercept some mmio/IO instruction on HV side.

As to the high performance IO , the VBD/VNIF patch have been sent out by
Xiaofeng, Ling. But vmx_interecept.c is not for it.

Thanks
Yunhong Jiang

Miao Feng wrote:
> we found something interesting in vmx_intercept.c providing a
> technique 
> 
> for high-performance io accessing.
> 
> then, what is the use of this technique? for xen-aware? what xen-aware
> exactly is?
> in terms of VT, we don't have to modify guest os to run on xen 3. if
> we are expecting high-performance io, do we have to modify guest os,
> or just install some kind of xen-aware (xen-something)?
> and, where xen-aware lies? xen space? dom0 space? domU space?
> 
> thanx in advance.
> 
> anyone? any idea?


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