On Tue, 2015-07-21 at 16:31 +0200, Thomas Gleixner wrote: > On Thu, 16 Jul 2015, Toshi Kani wrote: > > Note, removing the call to region_is_ram() is also necessary to > > fix bugs in region_is_ram(). walk_system_ram_range() requires > > RAM ranges be page-aligned in the iomem_resource table to work > > properly. This restriction has allowed multiple ioremaps to RAM > > (setup_data) which are page-unaligned. Using fixed region_is_ram() > > will cause these callers to start failing. > > Which callers? They are the callers I noticed. - Multiple ioremap calls from arch/x86/kernel/kdebugfs.c. - Multiple ioremap calls from arch/x86/kernel/ksysfs.c. - pcibios_add_device() Thanks, -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>