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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Asias He <asias@redhat.com>
Cc: linux-kernel@vger.kernel.org,
	Alexander Viro <viro@zeniv.linux.org.uk>,
	Benjamin LaHaise <bcrl@kvack.org>,
	James Bottomley <James.Bottomley@HansenPartnership.com>,
	Jeff Moyer <jmoyer@redhat.com>,
	kvm@vger.kernel.org, linux-aio@kvack.org,
	linux-fsdevel@vger.kernel.org,
	target-devel <target-devel@vger.kernel.org>,
	linux-scsi <linux-scsi@vger.kernel.org>,
	lf-virt <virtualization@lists.linux-foundation.org>,
	Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
	Zhi Yong Wu <wuzhy@cn.ibm.com>,
	Anthony Liguori <aliguori@linux.vnet.ibm.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
	Hannes Reinecke <hare@suse.de>
Subject: Re: [PATCH RESEND 0/5] Add vhost-blk support
Date: Tue, 17 Jul 2012 18:09:28 +0300	[thread overview]
Message-ID: <20120717150928.GB11587@redhat.com> (raw)
In-Reply-To: <1342169711-12386-1-git-send-email-asias@redhat.com>

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.

-- 
MST

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  parent reply	other threads:[~2012-07-17 15:09 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-13  8:55 [PATCH RESEND 0/5] Add vhost-blk support Asias He
2012-07-13  8:55 ` [PATCH RESEND 1/5] aio: Export symbols and struct kiocb_batch for in kernel aio usage Asias He
2012-07-13  8:55 ` [PATCH RESEND 2/5] eventfd: Export symbol eventfd_file_create() Asias He
2012-07-14  7:49 ` [PATCH RESEND 0/5] Add vhost-blk support Christoph Hellwig
2012-07-16  9:05   ` Asias He
2012-07-17 15:09 ` Michael S. Tsirkin [this message]
2012-07-18  2:09   ` Asias He
2012-07-18 11:42   ` Stefan Hajnoczi
2012-07-20 19:30 ` Michael S. Tsirkin

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