Re: [Xen-devel] BUG: bad page map under Xen

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 21.10.13 at 14:59, konrad wilk <konrad.wilk@xxxxxxxxxx> wrote:
> It is a bug in the drivers I believe. The issue is that the mapping 
> created for the second mmap
> call is done without VM_IO and on an PFN that is RAM (and not the BAR). 

So while putting together the reply that I had sent to Lukas a
minute ago I was actually hunting for that VM_IO -> _PAGE_IOMAP
translation, and wasn't able to find it anywhere. As you say it
nevertheless exists - what am I overlooking (and why would then
pci_mmap_page_range() nevertheless have to set _PAGE_IOMAP
by hand)?

Jan


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