From: [email protected] Date: Sun, 25 Apr 2010 17:20:06 +0800 > The idea is simple, just to pin the guest VM user space and then let > host NIC driver has the chance to directly DMA to it.
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. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
