Messages in this thread |  | | | Date | Thu, 28 Jul 2011 10:47:40 -0400 | | From | Christoph Hellwig <> | | Subject | Re: [RFC PATCH] vhost-blk: An in-kernel accelerator for virtio-blk |
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On Thu, Jul 28, 2011 at 10:29:05PM +0800, Liu Yuan wrote: > From: Liu Yuan <tailai.ly@taobao.com> > > Vhost-blk driver is an in-kernel accelerator, intercepting the > IO requests from KVM virtio-capable guests. It is based on the > vhost infrastructure. > > This is supposed to be a module over latest kernel tree, but it > needs some symbols from fs/aio.c and fs/eventfd.c to compile with. > So currently, after applying the patch, you need to *recomplie* > the kernel. > > Usage: > $kernel-src: make M=drivers/vhost > $kernel-src: sudo insmod drivers/vhost/vhost_blk.ko > > After insmod, you'll see /dev/vhost-blk created. done!
You'll need to send the changes for existing code separately.
If you're going mostly for raw blockdevice access just calling submit_bio will shave even more overhead off, and simplify the code a lot.
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