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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAJSP0QWKtsRDYB9uPPg7K8k2HHvgrQKBP9+biDwfyCmN=WmJqQ@mail.gmail.com>
Date:	Wed, 18 Jul 2012 12:42:09 +0100
From:	Stefan Hajnoczi <stefanha@...il.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Asias He <asias@...hat.com>, Jens Axboe <axboe@...nel.dk>,
	linux-aio@...ck.org, target-devel <target-devel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	lf-virt <virtualization@...ts.linux-foundation.org>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Anthony Liguori <aliguori@...ux.vnet.ibm.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	Benjamin LaHaise <bcrl@...ck.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
	Zhi Yong Wu <wuzhy@...ibm.com>,
	Christoph Hellwig <hch@....de>,
	Stefan Hajnoczi <stefanha@...ux.vnet.ibm.com>
Subject: Re: [PATCH RESEND 0/5] Add vhost-blk support

On Tue, Jul 17, 2012 at 4:09 PM, Michael S. Tsirkin <mst@...hat.com> wrote:
> 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.
>

Adding it to staging allows more people to try it out, so that's a
good thing.  If I get a moment to play with it I'll let you know the
results.

Stefan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/