linux-kernel - Re: [kvm-devel] [PATCH 3/3] virtio PCI device

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Message-ID: <47331531.8070709@us.ibm.com>
Date:	Thu, 08 Nov 2007 07:54:57 -0600
From:	Anthony Liguori <aliguori@...ibm.com>
To:	Avi Kivity <avi@...ranet.com>
CC:	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...ycorp.com.au>,
	virtualization@...ts.osdl.org, kvm-devel@...ts.sourceforge.net
Subject: Re: [kvm-devel] [PATCH 3/3] virtio PCI device

Avi Kivity wrote:
> Anthony Liguori wrote:
>   
>> This is a PCI device that implements a transport for virtio.  It allows virtio
>> devices to be used by QEMU based VMMs like KVM or Xen.
>>
>>   
>>     
>
> Didn't see support for dma.

Not sure what you're expecting there.  Using dma_ops in virtio_ring?

>  I think that with Amit's pvdma patches you
> can support dma-capable devices as well without too much fuss.
>   

What is the use case you're thinking of?  A semi-paravirt driver that 
does dma directly to a device?

Regards,

Anthony Liguori


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