Subject: Re: [PATCH 0/7] AlacrityVM guest drivers Reply-To:

From: "Michael S. Tsirkin" <[email-masked]>
Date: Thu, 6 Aug 2009 11:19:56 +0300

On Mon, Aug 03, 2009 at 01:17:30PM -0400, Gregory Haskins wrote:
> (Applies to v2.6.31-rc5, proposed for linux-next after review is complete)

These are guest drivers, right? Merging the guest first means relying on
kernel interface from an out of tree driver, which well might change
before it goes in.  Would it make more sense to start merging with the
host side of the project?

> This series implements the guest-side drivers for accelerated IO
> when running on top of the AlacrityVM hypervisor, the details of
> which you can find here:
> 
> http://developer.novell.com/wiki/index.php/AlacrityVM

Since AlacrityVM is kvm based, Cc [email-masked].

> This series includes the basic plumbing, as well as the driver for
> accelerated 802.x (ethernet) networking.

The graphs comparing virtio with vbus look interesting.
However, they do not compare apples to apples, do they?
These compare userspace virtio with kernel vbus, where for
apples to apples comparison one would need to compare
kernel virtio with kernel vbus. Right?

> Regards,
> -Greg
> 
> ---
> 
> Gregory Haskins (7):
>       venet: add scatter-gather/GSO support
>       net: Add vbus_enet driver
>       ioq: add driver-side vbus helpers
>       vbus-proxy: add a pci-to-vbus bridge
>       vbus: add a "vbus-proxy" bus model for vbus_driver objects
>       ioq: Add basic definitions for a shared-memory, lockless queue
>       shm-signal: shared-memory signals
> 
> 
>  arch/x86/Kconfig            |    2 
>  drivers/Makefile            |    1 
>  drivers/net/Kconfig         |   14 +
>  drivers/net/Makefile        |    1 
>  drivers/net/vbus-enet.c     |  899 +++++++++++++++++++++++++++++++++++++++++++
>  drivers/vbus/Kconfig        |   24 +
>  drivers/vbus/Makefile       |    6 
>  drivers/vbus/bus-proxy.c    |  216 ++++++++++
>  drivers/vbus/pci-bridge.c   |  824 +++++++++++++++++++++++++++++++++++++++
>  include/linux/Kbuild        |    4 
>  include/linux/ioq.h         |  415 ++++++++++++++++++++
>  include/linux/shm_signal.h  |  189 +++++++++
>  include/linux/vbus_driver.h |   80 ++++
>  include/linux/vbus_pci.h    |  127 ++++++
>  include/linux/venet.h       |   84 ++++
>  lib/Kconfig                 |   21 +
>  lib/Makefile                |    2 
>  lib/ioq.c                   |  294 ++++++++++++++
>  lib/shm_signal.c            |  192 +++++++++
>  19 files changed, 3395 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/net/vbus-enet.c
>  create mode 100644 drivers/vbus/Kconfig
>  create mode 100644 drivers/vbus/Makefile
>  create mode 100644 drivers/vbus/bus-proxy.c
>  create mode 100644 drivers/vbus/pci-bridge.c
>  create mode 100644 include/linux/ioq.h
>  create mode 100644 include/linux/shm_signal.h
>  create mode 100644 include/linux/vbus_driver.h
>  create mode 100644 include/linux/vbus_pci.h
>  create mode 100644 include/linux/venet.h
>  create mode 100644 lib/ioq.c
>  create mode 100644 lib/shm_signal.c
> 
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