[Xen-devel] error messages when doing VT-d device passthrough

["Kay, Allen M" <allen.m.kay@xxxxxxxxx>]

I’m getting the following error messages when doing Vt-d device passthrough:

 

…

 (XEN) p2m.c:2626:d0 clear_mmio_p2m_entry: gfn_to_mfn failed! gfn=000f303b

…

 

This message is printed out for each MMIO page used by the device.  This seems to be cause by the code change from “if ( INVALID_MFN == mfn)” to “if (!mfn_valid(mfn) )” in p2m.c/clear_mmio_p2m_entry().

 

What is the reason for the change?

 

Allen

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel