Messages in this thread |  | | Date | Sun, 15 Jun 2008 22:38:56 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86: use add_highpages_with_active_regions for high pages init |
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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).
-hpa
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