[vfio-users] issues about igd-passthrough using vfio-pci

[fulaiyang]

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" <alex.l.williamson at gmail.com> wrote:

[adding the list back, again]


On Tue, Sep 13, 2016 at 9:52 PM, fulaiyang <fulaiyang at 163.com> 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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