Hi Alex,
 The DMAR show that  'DMAR:[fault reason 02] Present bit in context entry is 
clear'. I read from a book,it shows that DMA data transmission of IGD device is 
invalid. That is to say,GPA can't convert to HPA. Could I confirm that my GPU 
platform has some problems?






At 2016-09-14 11:57:54, "Alex Williamson" <[email protected]> wrote:

[adding the list back, again]


On Tue, Sep 13, 2016 at 9:52 PM, fulaiyang <[email protected]> wrote:

thanks for your advise.
    I have removed the modprobe.blacklist and video options and unsafe 
interrupts thing. After reboot, I unbind the i915 driver and bind to the  
vfio-pci. However it still doesn't work,the screen has nothing output.


I don't know then.  You could try adding a serial port in order to collect the 
seabios log.  This processor may just be incompatible with the support we have 
so far, especially if you've already made IGD assignment work with other 
hardware.
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