Nick Kossifidis 5640975003 RISC-V: Add crash kernel support ... This patch allows Linux to act as a crash kernel for use with kdump. Userspace will let the crash kernel know about the memory region it can use through linux,usable-memory property on the /memory node (overriding its reg property), and about the memory region where the elf core header of the previous kernel is saved, through a reserved-memory node with a compatible string of "linux,elfcorehdr". This approach is the least invasive and re-uses functionality already present. I tested this on riscv64 qemu and it works as expected, you may test it by retrieving the dmesg of the previous kernel through /proc/vmcore, using the vmcore-dmesg utility from kexec-tools. Signed-off-by: Nick Kossifidis <mick@ics.forth.gr> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>		2021-04-26 08:25:24 -07:00
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cacheflush.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
context.c	RISC-V: Implement ASID allocator	2021-02-18 23:18:06 -08:00
extable.c	riscv: abstract out CSR names for supervisor vs machine mode	2019-11-05 09:20:42 -08:00
fault.c	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00
hugetlbpage.c	hugetlbfs: remove hugetlb_add_hstate() warning for existing hstate	2020-06-03 20:09:46 -07:00
init.c	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
kasan_init.c	riscv: add __init section marker to some functions	2021-04-26 08:25:07 -07:00
Makefile	riscv: Fixup patch_text panic in ftrace	2021-01-14 15:09:04 -08:00
pageattr.c	RISC-V Patches for the 5.11 Merge Window, Part 1	2020-12-18 10:43:07 -08:00
physaddr.c	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00
ptdump.c	riscv: add __init section marker to some functions	2021-04-26 08:25:07 -07:00
tlbflush.c	RISC-V: Issue a tlb page flush if possible	2019-10-29 11:32:18 -07:00