On 06/02/2010 12:42 PM, Joerg Roedel wrote:
quoted text
> On Tue, Jun 01, 2010 at 12:55:32PM +0300, Michael S. Tsirkin wrote:
>
>    
>> There seems to be some misunderstanding.  The userspace interface
>> proposed forces a separate domain per device and forces userspace to
>> repeat iommu programming for each device.  We are better off sharing a
>> domain between devices and programming the iommu once.
>>
>> The natural way to do this is to have an iommu driver for programming
>> iommu.
>>      
> IMO a seperate iommu-userspace driver is a nightmare for a userspace
> interface. It is just too complicated to use. We can solve the problem
> of multiple devices-per-domain with an ioctl which allows binding one
> uio-device to the address-space on another. Thats much simpler.
>    

This is non trivial with hotplug.

-- 
error compiling committee.c: too many arguments to function

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