From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH RFC 3/3] virtio infrastructure: example
 block driver
Date: Thu, 31 May 2007 20:36:24 +0300
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Carsten Otte wrote:
> Troy Benjegerdes wrote:
>   
>> This kind of a claim needs some benchmark data to document it.
>>     
> We've implemented both for our vdisk driver on 390. At least on our 
> platform, merging in the host is preferable because vmenter/vmexit is 
> very fast and we would merge twice because we submit the result via 
> io_submit() system call from host userland.
>   


If a single hypercall can submit multiple requests, then this may work
well for the newcomer archs too.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.


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