paper on reverse-engineering drivers

[Nate Lawson]

On 5/26/2011 1:19 PM, Andriy Gapon wrote:
> on 26/05/2011 22:25 Nate Lawson said the following:
>> This might be a useful source for making ACPI compatible with Windows.
>>
>> http://dslab.epfl.ch/pubs/revnic
>>
>> I had thought of a project like this before. My idea was to take QEMU
>> and map PCI config space and allow direct access to the bare hardware
>> for only one device. The developer would install Windows in this QEMU
>> image on a system with the target device, identify it by its PCI id, and
>> then run Windows normally. The VM would log the driver's accesses to
>> config space as well as use CoW semantics for DMA accesses to memory and
>> IO ports.
> 
> Something like this?
> http://www.serialice.com/News/News.html
> 
>> Now that Intel/AMD support hardware virtualization and DMA isolation, it
>> would be better to do this with a modified Xen hypervisor.

Yes, that is a nice project but requires flashing firmware. With
hardware virtualization you can trap all IO accesses and do this in
software.

-- 
Nate