[EMAIL PROTECTED] writes: > x86_64: Map only usable memory in identity map.
I don't think that is needed or makes sense for reserved/ACPI * etc. Only e820 holes should be truly unmapped because only those should contain mmio. > All reserved memory maps to a > zero page. Why zero page? Why not unmap. Anyways you could make that a zillion times more simple by just rounding the e820 areas to 2MB -- for the holes only that should be ok I think; i would expect them to be near always already suitably aligned. In short this can be all done much simpler. -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/