[Bug 215740] kernel warning: DMA-API: xhci_hcd: cacheline tracking EEXIST, overlapping mappings aren't supported

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https://bugzilla.kernel.org/show_bug.cgi?id=215740

--- Comment #29 from Ferry Toth (ferry.toth@xxxxxxxxxxxx) ---
(In reply to Andy Shevchenko from comment #25)
> status, it's a pointer and again 4/8 bytes. I believe we are talking about
> x86_64 case, so I fail to see how 1 and 4 map to the struct usb_hub fields.

Yes. But I just checked and the same happens with i686 kernel (on same
platform).

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