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Re: [RFC][PATCH v4 00/18] Provide a zero-copy method on KVM virtio-net.

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From: David Miller
Subject: Re: [RFC][PATCH v4 00/18] Provide a zero-copy method on KVM virtio-net.
Date: Sunday, April 25, 2010 - 2:55 am

From: xiaohui.xin@intel.com
Date: Sun, 25 Apr 2010 17:20:06 +0800


Isn't it much easier to map the RX ring of the network device into the
guest's address space, have DMA map calls translate guest addresses to
physical/DMA addresses as well as do all of this crazy page pinning
stuff, and provide the translations and protections via the IOMMU?

What's being proposed here looks a bit over-engineered.
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[RFC][PATCH v4 01/18] Add a new struct for device to manip ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 02/18] Export 2 func for device to assign/d ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 03/18] Add a ndo_mp_port_prep pointer to ne ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 04/18] Add a function make external buffer ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 05/18] Add a function to indicate if device ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 06/18] Add interface to get external buffers., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 07/18] Make __alloc_skb() to get external b ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 08/18] Ignore skb_reserve() when device is ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 09/18] Don't do skb recycle, if device use ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 10/18] Use callback to deal with skb_releas ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 11/18] Add a hook to intercept external buf ..., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 12/18] To skip GRO if buffer is external., xiaohui.xin, (Sun Apr 25, 2:19 am)
[RFC][PATCH v4 13/18] Add header file for mp device., xiaohui.xin, (Sun Apr 25, 2:20 am)
[RFC][PATCH v4 14/18] Add basic func and special ioctl to ..., xiaohui.xin, (Sun Apr 25, 2:20 am)
[RFC][PATCH v4 15/18] Manipulate external buffers in mp de ..., xiaohui.xin, (Sun Apr 25, 2:20 am)
[RFC][PATCH v4 16/18] Export proto_ops to vhost-net driver., xiaohui.xin, (Sun Apr 25, 2:20 am)
[RFC][PATCH v4 17/18] Add a kconfig entry and make entry f ..., xiaohui.xin, (Sun Apr 25, 2:20 am)
[RFC][PATCH v4 18/18] Provides multiple submits and async ..., xiaohui.xin, (Sun Apr 25, 2:20 am)
[RFC][PATCH v4 00/18] Provide a zero-copy method on KVM vi ..., xiaohui.xin, (Sun Apr 25, 2:20 am)
Re: [RFC][PATCH v4 05/18] Add a function to indicate if de ..., Changli Gao, (Sun Apr 25, 2:33 am)
Re: [RFC][PATCH v4 05/18] Add a function to indicate if de ..., Changli Gao, (Sun Apr 25, 2:35 am)
Re: [RFC][PATCH v4 05/18] Add a function to indicate if de ..., David Miller, (Sun Apr 25, 2:51 am)
Re: [RFC][PATCH v4 05/18] Add a function to indicate if de ..., David Miller, (Sun Apr 25, 2:51 am)
Re: [RFC][PATCH v4 00/18] Provide a zero-copy method on KV ..., David Miller, (Sun Apr 25, 2:55 am)
Re: [RFC][PATCH v4 00/18] Provide a zero-copy method on KV ..., Michael S. Tsirkin, (Sun Apr 25, 5:14 am)
RE: [RFC][PATCH v4 00/18] Provide a zero-copy method on KV ..., Xin, Xiaohui, (Wed Apr 28, 6:33 pm)
RE: [RFC][PATCH v4 05/18] Add a function to indicate if de ..., Xin, Xiaohui, (Wed Apr 28, 6:38 pm)
RE: [RFC][PATCH v4 00/18] Provide a zero-copy method on KV ..., Xin, Xiaohui, (Sat May 8, 12:55 am)
Re: [RFC][PATCH v4 00/18] Provide a zero-copy method on KV ..., Michael S. Tsirkin, (Sun May 9, 2:26 am)