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    SubjectRe: immediately reboots/resets on EFI system

    Op 13-06-11 20:33, Matthew Garrett schreef:
    > Ok, that's odd. These are 0x01800000-0x01900000, which should lie inside
    > the kernel data range (01580279-01aa4cff : Kernel data). We should be
    > skipping that region. How are we touching that reange at all? Can you
    > add a printk to reserve_boot_services to see what it actually ends up
    > reserving?
    Finally success!

    Didn't notice it before, but my efi memmap has:
    [ 0.000000] EFI: mem00: type=3, attr=0xf, range=[0x0000000000000000-0x0000000000008000) (0MB)

    Later on this range gets reserved for bios:

    [ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved)
    [ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable)

    So I've added a check for e820.

    Also with some digging into the swapper warning, it appears to be because
    some memory was allocated in the _init part of the kernel, which you didn't check for.
    this probably caused the warnings I had. Now I made sure to cover
    the entire kernel from _text to _end, which should cover the entire kernel.


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