On Wed, 2012-03-07 at 10:14 -0800, Yinghai Lu wrote: > > + > > + if (end <= max_low_pfn << PAGE_SHIFT) > > + max_low_pfn_mapped = last_pfn_mapped; > > those two line could be dropped if you have > last_pfn_mapped = 1<<(20 - 12); > before the loop When you say "dropped" do you mean "not executed" or "deleted because they are unnecessary"? > Also you can not use max_low_pfn here... Why not? Please explain. > you need to update e820_end_pfn to search max pfn for several types like > > + case E820_RAM: > > + case E820_RESERVED_EFI: > > + case E820_ACPI: > > + case E820_NVS: Yeah, that's a good point. I'll make that change. > but my question is: > is there any system that will put EFI runtime, or ACPI or NVS above > 4G? is that legal? Matthew already answered this. I think it's entirely possible that EFI runtime regions can reside above 4G. -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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