This set of patches attempts to add support to generic MIPS kernels for kexec and crashkernel loading, as well as fix some existing potential issues with KASLR Patches 1-7 fix various bootmem region definition problems, most importantly ensuring that a firmware-loaded DTB is not corrupt during kernel relocation or during bootmem initialisation Patches 8-9 add some error checking and debug messages for kexec Patch 10 adds support for loading the device tree blob through kexec on generic platforms using UHI boot protocol. I will be publishing supporting patches for kexec (especially for generic platform dtb support) soon. * Notes for crashkernel core dumps * The following patches are required: https://patchwork.linux-mips.org/patch/14588/ https://patchwork.linux-mips.org/patch/14587/ https://patchwork.linux-mips.org/patch/14586/ For non-generic platforms there is no standard method of passing boot commandline, hence the required boot arguments (mem, elfcorehdr) need to be set with CONFIG_CMDLINE (except for Cavium Octeon platforms which have their own method implemented in soc-specific code as well as in kexec userspace tool). Marcin Nowakowski (10): MIPS: do not request resources for crashkernel if one isn't defined MIPS: init: ensure reserved memory regions are not added to bootmem MIPS: init: ensure bootmem does not corrupt reserved memory MIPS: use early_init_fdt_reserve_self to protect DTB location MIPS: platform: allow for DTB to be moved during kernel relocation MIPS: relocate: optionally relocate the DTB MIPS: fix mem=X@Y commandline processing MIPS: kexec: do not reserve invalid crashkernel memory on boot MIPS: kexec: add debug info about the new kexec'ed image MIPS: generic/kexec: add support for a DTB passed in a separate buffer arch/mips/generic/Makefile | 1 + arch/mips/generic/init.c | 13 ++++++ arch/mips/generic/kexec.c | 45 +++++++++++++++++++ arch/mips/include/asm/bootinfo.h | 13 ++++++ arch/mips/kernel/machine_kexec.c | 22 ++++++++++ arch/mips/kernel/prom.c | 7 +++ arch/mips/kernel/relocate.c | 37 +++++++++++++++- arch/mips/kernel/setup.c | 94 ++++++++++++++++++++++++++++++++++++++-- 8 files changed, 228 insertions(+), 4 deletions(-) create mode 100644 arch/mips/generic/kexec.c -- 2.7.4
