• Olaf Hering's avatar
    crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr,... · 93a72052
    Olaf Hering authored
    crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn
    The Xen PV drivers in a crashed HVM guest can not connect to the dom0
    backend drivers because both frontend and backend drivers are still in
    connected state.  To run the connection reset function only in case of a
    crashdump, the is_kdump_kernel() function needs to be available for the PV
    driver modules.
    Consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn into
    kernel/crash_dump.c Also export elfcorehdr_addr to make is_kdump_kernel()
    usable for modules.
    Leave 'elfcorehdr' as early_param().  This changes powerpc from __setup()
    to early_param().  It adds an address range check from x86 also on ia64
    and powerpc.
    [akpm@linux-foundation.org: additional #includes]
    [akpm@linux-foundation.org: remove elfcorehdr_addr export]
    [akpm@linux-foundation.org: fix for Tejun's mm/nobootmem.c changes]
    Signed-off-by: default avatarOlaf Hering <olaf@aepfle.de>
    Cc: Russell King <rmk@arm.linux.org.uk>
    Cc: "Luck, Tony" <tony.luck@intel.com>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Paul Mundt <lethal@linux-sh.org>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Johannes Weiner <hannes@cmpxchg.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
nobootmem.c 11 KB