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  • Ingo Molnar's avatar
    x86: add X86_RESERVE_LOW_64K · fc381519
    Ingo Molnar authored
    This bugzilla:
    
      http://bugzilla.kernel.org/show_bug.cgi?id=11237
    
    
    
    Documents a wide range of systems where the BIOS utilizes the first
    64K of physical memory during suspend/resume and other hardware events.
    
    Currently we reserve this memory on all AMI and Phoenix BIOS systems.
    Life is too short to hunt subtle memory corruption problems like this,
    so we try to be robust by default.
    
    Still, allow this to be overriden: allow users who want that first 64K
    of memory to be available to the kernel disable the quirk, via
    CONFIG_X86_RESERVE_LOW_64K=n.
    
    Also, allow the early reservation to overlap with other
    early reservations.
    
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    fc381519