• Hannes Hering's avatar
    IB/ehca: Tolerate dynamic memory operations before driver load · 0cf89dcd
    Hannes Hering authored
    Implement toleration of dynamic memory operations and 16 GB gigantic
    pages, where "toleration" means that the driver can cope with dynamic
    memory operations that happen before the driver is loaded.  While the
    ehca driver is loaded, dynamic memory operations are still prohibited
    by returning NOTIFY_BAD from the memory notifier.
    
    On module load the driver walks through available system memory,
    checks for available memory ranges and then registers the kernel
    internal memory region accordingly.  The translation of address ranges
    is implemented via a 3-level busmap.
    Signed-off-by: default avatarHannes Hering <hering2@de.ibm.com>
    Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
    0cf89dcd
ehca_main.c 30.1 KB