Re: [PATCH RESEND 0/5] Add vhost-blk support

From: Michael S. Tsirkin
Date: Tue Jul 17 2012 - 11:10:34 EST

On Fri, Jul 13, 2012 at 04:55:06PM +0800, Asias He wrote:
> Hi folks,
> [I am resending to fix the broken thread in the previous one.]
> This patchset adds vhost-blk support. vhost-blk is a in kernel virito-blk
> device accelerator. Compared to userspace virtio-blk implementation, vhost-blk
> gives about 5% to 15% performance improvement.

Same thing as tcm_host comment:

It seems not 100% clear whether this driver will have major
userspace using it. And if not, it would be very hard to support a
driver when recent userspace does not use it in the end.

I think a good idea for 3.6 would be to make it depend on
CONFIG_STAGING. Then we don't commit to an ABI. For this, you can add
a separate Kconfig and source it from drivers/staging/Kconfig. Maybe it
needs to be in a separate directory drivers/vhost/staging/Kconfig.

I Cc'd the list of tcm_host in the hope that you can cooperate on this.

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