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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boot	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00
configs	RISC-V: Enable CPU Hotplug in defconfigs	2021-02-26 21:24:02 -08:00
errata	riscv: sifive: Apply errata "cip-1200" patch	2021-04-26 08:24:58 -07:00
include	RISC-V: Add kdump support	2021-04-26 08:25:23 -07:00
kernel	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
lib	riscv: Add support for function error injection	2021-01-14 15:09:09 -08:00
mm	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
net	riscv: bpf: Avoid breaking W^X	2021-04-26 08:25:14 -07:00
Kbuild	riscv: Allow device trees to be built into the kernel	2020-05-18 11:38:05 -07:00
Kconfig	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
Kconfig.debug	RISC-V: Remove EARLY_PRINTK support	2018-12-17 10:23:46 -08:00
Kconfig.erratas	riscv: sifive: Apply errata "cip-1200" patch	2021-04-26 08:24:58 -07:00
Kconfig.socs	riscv: sifive: Add SiFive alternative ports	2021-04-26 08:24:56 -07:00
Makefile	riscv: Introduce alternative mechanism to apply errata solution	2021-04-26 08:24:55 -07:00