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SubjectRe: [3.9-rc1 x86] Bug in ioremap code?
Does anybody know what this business is in __cpa_process_fault()?

> /*
> * Ignore the NULL PTE for kernel identity mapping, as it is expected
> * to have holes.
> * Also set numpages to '1' indicating that we processed cpa req for
> * one virtual address page and its pfn. TBD: numpages can be set based
> * on the initial value and the level returned by lookup_address().
> */

If this is expecting the identity mapping to have holes, then the
BUG_ON() is wrong. But how would it _get_ holes?



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