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From: Greg KH <gregkh@suse.de>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Hans J. Koch" <hjk@linutronix.de>,
	anthony@codemonkey.ws, avi@redhat.com, kvm@vger.kernel.org,
	chrisw@redhat.com, linux-kernel@vger.kernel.org,
	Jesse Barnes <jbarnes@virtuousgeek.org>
Subject: Re: [PATCHv5] uio: add generic driver for PCI 2.3 devices
Date: Mon, 20 Jul 2009 12:55:36 -0700	[thread overview]
Message-ID: <20090720195536.GA30483@suse.de> (raw)
In-Reply-To: <20090720195227.GB19009@redhat.com>

On Mon, Jul 20, 2009 at 10:52:27PM +0300, Michael S. Tsirkin wrote:
> On Mon, Jul 20, 2009 at 09:09:43PM +0200, Hans J. Koch wrote:
> > On Mon, Jul 20, 2009 at 10:29:34AM +0300, Michael S. Tsirkin wrote:
> > > This adds a generic uio driver that can bind to any PCI device.  First
> > > user will be virtualization where a qemu userspace process needs to give
> > > guest OS access to the device.
> > > 
> > > Interrupts are handled using the Interrupt Disable bit in the PCI command
> > > register and Interrupt Status bit in the PCI status register.  All devices
> > > compliant to PCI 2.3 (circa 2002) and all compliant PCI Express devices should
> > > support these bits.  Driver detects this support, and won't bind to devices
> > > which do not support the Interrupt Disable Bit in the command register.
> > > 
> > > It's expected that more features of interest to virtualization will be
> > > added to this driver in the future. Possibilities are: mmap for device
> > > resources, MSI/MSI-X, eventfd (to interface with kvm), iommu.
> > 
> > Thanks for adding the docs! Looks alright to me.
> > 
> > Thanks,
> > Hans
> > 
> > > 
> > > Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
> > > Acked-by: Chris Wright <chrisw@redhat.com>
> > 
> > Signed-off-by: Hans J. Koch <hjk@linutronix.de>
> 
> Jesse just acked this patch in a private mail, as well.
> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>

Odd, but ok...

I'll queue it up now.

thanks,

greg k-h

  reply	other threads:[~2009-07-20 19:59 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-20  7:29 [PATCHv5] uio: add generic driver for PCI 2.3 devices Michael S. Tsirkin
2009-07-20 19:09 ` Hans J. Koch
2009-07-20 19:52   ` Michael S. Tsirkin
2009-07-20 19:55     ` Greg KH [this message]
2009-07-20 23:15       ` Jesse Barnes

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