Re: [PATCH] GHES: correct page protection flags in ghes_ioremap_pfn_...()

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On Fri, 2012-09-07 at 07:40 +0100, Jan Beulich wrote:
> At least for Xen Dom0 it is very relevant to set the _PAGE_IO bit when
> ioremap-ing (non-RAM) areas, as that flag suppresses the PFN -> MFN
> translation otherwise done in PV guests. (The offending commit was
> 81e88fdc432a1552401d6e91a984dcccce72b8dc.)

If my understanding were correct, ghes_ioremap_pfn_nmi normally only map
RAM.

Best Regards,
Huang Ying


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