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From: mlin@kernel.org (Ming Lin)
Subject: [RFC PATCH 0/9] vhost-nvme: new qemu nvme backend using nvme target
Date: Thu, 19 Nov 2015 16:20:59 -0800	[thread overview]
Message-ID: <1447978868-17138-1-git-send-email-mlin@kernel.org> (raw)

Hi,

This is the first attempt to add a new qemu nvme backend using
in-kernel nvme target.

Most code are ported from qemu-nvme and also borrow code from
Hannes Reinecke's rts-megasas.

It's similar as vhost-scsi, but doesn't use virtio.
The advantage is guest can run unmodified NVMe driver.
So guest can be any OS that has a NVMe driver.

The goal is to get as good performance as vhost-scsi.
But for now, peformance is poor.

MMIO is the bottleneck.

One improvment could be to use google's NVMe vendor extension that
I send in another thread, aslo here:
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/log/?h=nvme-google-ext

Qemu side:
http://www.minggr.net/cgit/cgit.cgi/qemu/log/?h=vhost-nvme.0
Kernel side also here:
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/log/?h=vhost-nvme.0

Thanks for any comment,
Ming

WARNING: multiple messages have this Message-ID (diff)
From: Ming Lin <mlin@kernel.org>
To: linux-nvme@lists.infradead.org
Cc: Christoph Hellwig <hch@lst.de>,
	qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org
Subject: [RFC PATCH 0/9] vhost-nvme: new qemu nvme backend using nvme target
Date: Thu, 19 Nov 2015 16:20:59 -0800	[thread overview]
Message-ID: <1447978868-17138-1-git-send-email-mlin@kernel.org> (raw)

Hi,

This is the first attempt to add a new qemu nvme backend using
in-kernel nvme target.

Most code are ported from qemu-nvme and also borrow code from
Hannes Reinecke's rts-megasas.

It's similar as vhost-scsi, but doesn't use virtio.
The advantage is guest can run unmodified NVMe driver.
So guest can be any OS that has a NVMe driver.

The goal is to get as good performance as vhost-scsi.
But for now, peformance is poor.

MMIO is the bottleneck.

One improvment could be to use google's NVMe vendor extension that
I send in another thread, aslo here:
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/log/?h=nvme-google-ext

Qemu side:
http://www.minggr.net/cgit/cgit.cgi/qemu/log/?h=vhost-nvme.0
Kernel side also here:
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/log/?h=vhost-nvme.0

Thanks for any comment,
Ming

WARNING: multiple messages have this Message-ID (diff)
From: Ming Lin <mlin@kernel.org>
To: linux-nvme@lists.infradead.org
Cc: Christoph Hellwig <hch@lst.de>,
	qemu-devel@nongnu.org,
	"Nicholas A. Bellinger" <nab@linux-iscsi.org>,
	virtualization@lists.linux-foundation.org
Subject: [Qemu-devel] [RFC PATCH 0/9] vhost-nvme: new qemu nvme backend using nvme target
Date: Thu, 19 Nov 2015 16:20:59 -0800	[thread overview]
Message-ID: <1447978868-17138-1-git-send-email-mlin@kernel.org> (raw)

Hi,

This is the first attempt to add a new qemu nvme backend using
in-kernel nvme target.

Most code are ported from qemu-nvme and also borrow code from
Hannes Reinecke's rts-megasas.

It's similar as vhost-scsi, but doesn't use virtio.
The advantage is guest can run unmodified NVMe driver.
So guest can be any OS that has a NVMe driver.

The goal is to get as good performance as vhost-scsi.
But for now, peformance is poor.

MMIO is the bottleneck.

One improvment could be to use google's NVMe vendor extension that
I send in another thread, aslo here:
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/log/?h=nvme-google-ext

Qemu side:
http://www.minggr.net/cgit/cgit.cgi/qemu/log/?h=vhost-nvme.0
Kernel side also here:
https://git.kernel.org/cgit/linux/kernel/git/mlin/linux.git/log/?h=vhost-nvme.0

Thanks for any comment,
Ming

             reply	other threads:[~2015-11-20  0:20 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-20  0:20 Ming Lin [this message]
2015-11-20  0:20 ` [Qemu-devel] [RFC PATCH 0/9] vhost-nvme: new qemu nvme backend using nvme target Ming Lin
2015-11-20  0:20 ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 1/9] nvme-vhost: add initial commit Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 2/9] nvme-vhost: add basic ioctl handlers Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 3/9] nvme-vhost: add basic nvme bar read/write Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 4/9] nvmet: add a controller "start" hook Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  5:13   ` Christoph Hellwig
2015-11-20  5:13   ` Christoph Hellwig
2015-11-20  5:13     ` [Qemu-devel] " Christoph Hellwig
2015-11-20  5:31     ` Ming Lin
2015-11-20  5:31       ` [Qemu-devel] " Ming Lin
2015-11-20  5:31       ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 5/9] nvme-vhost: add controller "start" callback Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 6/9] nvmet: add a "parse_extra_admin_cmd" hook Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 7/9] nvme-vhost: add "parse_extra_admin_cmd" callback Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 8/9] nvme-vhost: add vhost memory helpers Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  0:21 ` [RFC PATCH 9/9] nvme-vhost: add nvme queue handlers Ming Lin
2015-11-20  0:21   ` [Qemu-devel] " Ming Lin
2015-11-20  0:21   ` Ming Lin
2015-11-20  5:16 ` [RFC PATCH 0/9] vhost-nvme: new qemu nvme backend using nvme target Christoph Hellwig
2015-11-20  5:16 ` Christoph Hellwig
2015-11-20  5:16   ` [Qemu-devel] " Christoph Hellwig
2015-11-20  5:33   ` Ming Lin
2015-11-20  5:33     ` [Qemu-devel] " Ming Lin
2015-11-20  5:33     ` Ming Lin
2015-11-21 13:11 ` Paolo Bonzini
2015-11-21 13:11 ` Paolo Bonzini
2015-11-21 13:11   ` [Qemu-devel] " Paolo Bonzini
2015-11-23  8:17   ` Ming Lin
2015-11-23  8:17     ` [Qemu-devel] " Ming Lin
2015-11-23  8:17     ` Ming Lin
2015-11-23 14:14     ` Paolo Bonzini
2015-11-23 14:14       ` [Qemu-devel] " Paolo Bonzini
2015-11-23 14:14       ` Paolo Bonzini
2015-11-24  7:27       ` Ming Lin
2015-11-24  7:27         ` [Qemu-devel] " Ming Lin
2015-11-24  7:27         ` Ming Lin
2015-11-24  8:23         ` Ming Lin
2015-11-24  8:23           ` [Qemu-devel] " Ming Lin
2015-11-24  8:23           ` Ming Lin
2015-11-24 10:51         ` Paolo Bonzini
2015-11-24 10:51           ` [Qemu-devel] " Paolo Bonzini
2015-11-24 10:51           ` Paolo Bonzini
2015-11-24 19:25           ` Ming Lin
2015-11-24 19:25             ` [Qemu-devel] " Ming Lin
2015-11-24 19:25             ` Ming Lin
2015-11-25 11:27             ` Paolo Bonzini
2015-11-25 11:27               ` [Qemu-devel] " Paolo Bonzini
2015-11-25 11:27               ` Paolo Bonzini
2015-11-25 18:51               ` Ming Lin
2015-11-25 18:51                 ` [Qemu-devel] " Ming Lin
2015-11-25 18:51                 ` Ming Lin
2015-11-25 19:32                 ` Paolo Bonzini
2015-11-25 19:32                   ` [Qemu-devel] " Paolo Bonzini
2015-11-25 19:32                   ` Paolo Bonzini
2015-11-30 23:20       ` Ming Lin
2015-11-30 23:20         ` [Qemu-devel] " Ming Lin
2015-11-30 23:20         ` Ming Lin
2015-12-01 16:02         ` Paolo Bonzini
2015-12-01 16:02           ` [Qemu-devel] " Paolo Bonzini
2015-12-01 16:02           ` Paolo Bonzini
2015-12-01 16:26           ` Ming Lin
2015-12-01 16:26             ` [Qemu-devel] " Ming Lin
2015-12-01 16:26             ` Ming Lin
2015-12-01 16:59             ` Paolo Bonzini
2015-12-01 16:59               ` [Qemu-devel] " Paolo Bonzini
2015-12-01 16:59               ` Paolo Bonzini
2015-12-02  5:13               ` Ming Lin
2015-12-02  5:13                 ` [Qemu-devel] " Ming Lin
2015-12-02  5:13                 ` Ming Lin
2015-12-02 10:07                 ` Paolo Bonzini
2015-12-02 10:07                   ` [Qemu-devel] " Paolo Bonzini
2015-12-02 10:07                   ` Paolo Bonzini

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