Re: [PATCH v3 0/5] RISC-V: Add kexec/kdump support

Palmer Dabbelt
2021-04-23T03:31:59Z

On Mon, 05 Apr 2021 01:57:07 PDT (-0700), mick@ics.forth.gr wrote:
> This patch series adds kexec/kdump and crash kernel
> support on RISC-V. For testing the patches a patched
> version of kexec-tools is needed (still a work in
> progress) which can be found at:
>
> https://riscv.ics.forth.gr/kexec-tools-patched.tar.xz
>
> v3:
> * Rebase on newer kernel tree
> * Minor cleanups
> * Split UAPI changes to a separate patch
> * Improve / cleanup init_resources
> * Resolve Palmer's comments
>
> v2:
> * Rebase on newer kernel tree
> * Minor cleanups
> * Properly populate the ioresources tre, so that it
> can be used later on for implementing strict /dev/mem
> * Use linux,usable-memory on /memory instead of a new binding
> * USe a reserved-memory node for ELF core header
>
> Nick Kossifidis (5):
> RISC-V: Add EM_RISCV to kexec UAPI header
> RISC-V: Add kexec support
> RISC-V: Improve init_resources
> RISC-V: Add kdump support
> RISC-V: Add crash kernel support
>
> arch/riscv/Kconfig | 25 ++++
> arch/riscv/include/asm/elf.h | 6 +
> arch/riscv/include/asm/kexec.h | 54 +++++++
> arch/riscv/kernel/Makefile | 6 +
> arch/riscv/kernel/crash_dump.c | 46 ++++++
> arch/riscv/kernel/crash_save_regs.S | 56 +++++++
> arch/riscv/kernel/kexec_relocate.S | 222 ++++++++++++++++++++++++++++
> arch/riscv/kernel/machine_kexec.c | 193 ++++++++++++++++++++++++
> arch/riscv/kernel/setup.c | 113 ++++++++------
> arch/riscv/mm/init.c | 110 ++++++++++++++
> include/uapi/linux/kexec.h | 1 +
> 11 files changed, 787 insertions(+), 45 deletions(-)
> create mode 100644 arch/riscv/include/asm/kexec.h
> create mode 100644 arch/riscv/kernel/crash_dump.c
> create mode 100644 arch/riscv/kernel/crash_save_regs.S
> create mode 100644 arch/riscv/kernel/kexec_relocate.S
> create mode 100644 arch/riscv/kernel/machine_kexec.c

Thanks. There were some minor issues and some merge conflicts, I put
this on for-next with some fixups.