Messages in this thread |  | | Date | Sun, 15 Jun 2008 22:43:01 -0700 | From | "Yinghai Lu" <> | Subject | Re: [PATCH] x86: use add_highpages_with_active_regions for high pages init |
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On Sun, Jun 15, 2008 at 10:38 PM, H. Peter Anvin <hpa@zytor.com> wrote: > Huang, Ying wrote: >> >> On Sun, 2008-06-15 at 20:46 -0700, Yinghai Lu wrote: >> [...] >>> >>> don't need, >>> EFI memmap should be reserved in e820map, so it should not show up in >>> early_node_map. >> >> I don't think so. EFI memmap comes from boot-loader not from BIOS. It >> contains boot-loader execution information (such as EfiLoaderCode, >> EfiLoaderData, etc), and it will be located at different position for >> each system reboot. >> >> If it is reserved in E820 memmap, hibernation can not work. Because the >> memory area for EFI memmap is not E820 RAM, it is not saved during >> hibernating and restored after restoring from disk. >> >> Linked list of struct setup_data has similar requirement too. >> > > That doesn't mean we can't use the E820 memory map structure for it. We > just have to define a new kernel-internal memory type, instead of using type > 2 (reserved).
yes. then just modify e820_mark_nosave_regions a little bit.
YH
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