Messages in this thread |  | | | Date | Fri, 29 Jul 2011 19:19:39 +0800 | | From | Liu Yuan <> | | Subject | Re: [RFC PATCH] vhost-blk: An in-kernel accelerator for virtio-blk |
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On 07/28/2011 10:47 PM, Christoph Hellwig wrote: > 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. > Thanks for reminding.
> 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. Yes, sounds cool, I'll give it a try.
Yuan
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