powerpc/pseries: Enable RAS hotplug events later
Currently if the kernel receives a memory hot-unplug event early enough, it may get stuck in an infinite loop in dissolve_free_huge_pages(). This appears as a stall just after: pseries-hotplug-mem: Attempting to hot-remove XX LMB(s) at YYYYYYYY It appears to be caused by "minimum_order" being uninitialized, due to init_ras_IRQ() executing before hugetlb_init(). To correct this, extract the part of init_ras_IRQ() that enables hotplug event processing and place it in the machine_late_initcall phase, which is guaranteed to be after hugetlb_init() is called. Signed-off-by: NSam Bobroff <sam.bobroff@au1.ibm.com> Acked-by: NBalbir Singh <bsingharora@gmail.com> [mpe: Reorder the functions to make the diff readable] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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