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 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html