Messages in this thread | | | Subject | Re: [RFC PATCH 2/2] macvtap: TX zero copy between guest and host kernel | From | Shirley Ma <> | Date | Tue, 14 Sep 2010 10:02:25 -0700 |
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On Tue, 2010-09-14 at 18:29 +0200, Michael S. Tsirkin wrote: > Precisely. This is what the patch from Xin Xiaohui does. That code > already seems to do most of what you are trying to do, right?
I thought host pins guest kernel buffer pages was good enough for TX thought I didn't look up xiaohui's vhost asycn io patch in details.
What's the performance data Xiaohui got from using kiocb? I haven't seen any performance number from him yet.
> The main thing missing seems to be macvtap integration, so that we can > fall back > on data copy if zero copy is unavailable? > How hard would it be to basically link the mp and macvtap modules > together to get us this functionality? Anyone?
The simple integration is using macvtap + xiaohui's vhost asycn io patch. I can make a try for TX only.
Thanks Shirley
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