Re: [PATCH 00/10] PV-IO v3

Avi Kivity
2007-08-20T14:14:03Z

Gregory Haskins wrote:
>>>
>>>
>> Or, my preference, have a small sglist in the descriptor;
>>
>
>
> Define "small" ;)
>

4.

> There a certainly patterns that cannot/will-not take advantage of SG
> (for instance, your typical network rx path), and therefore the sg
> entries are wasted in some cases. Since they need to be (IMHO) u64,
> they suck down at least 8 bytes a piece. Because of this I elected to
> use the model of one pointer per descriptor, with an external descriptor
> for SG. What are your thoughts on this?
>

Measurement will tell. I have a feeling that it won't really matter, so
maybe an external sglist is best.

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error compiling committee.c: too many arguments to function