[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [Query] Flow of PCI device dedicated to a domU
Hello Ian, >> If I read this correctly you are saying that the MMIO region is >> already mapped into my domain by xl? So when I go and read the BAR >> register from the PCI configuration I can just go and access it >> directly or do I have to update the VA mapping? > Stefano meant mapped in the p2m which under ARM or x86 HVM still means > you need to make a virtual mapping of those PFNs. > Under X86 PV "mapping" in this context really just means giving > permission to map the underlying MFNs, so you still need to create a > virtual mapping but they don't exist in your p2m until you put them > there. Thanks Ian, that is what I had understood from the mail that you sent me on the thread I started about "Consuming PCI device in PV kernel". Just wanted to confirm. I have just about worked my way up to implementing the MMIO access now and wanted to make sure before I carry on. -- Best regards, Simon mailto:furryfuttock@xxxxxxxxx _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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