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RISC-V: Add kexec support
This patch adds support for kexec on RISC-V. On SMP systems it depends on HOTPLUG_CPU in order to be able to bring up all harts after kexec. It also needs a recent OpenSBI version that supports the HSM extension. I tested it on riscv64 QEMU on both an smp and a non-smp system. Signed-off-by:Nick Kossifidis <mick@ics.forth.gr> Signed-off-by:
Palmer Dabbelt <palmerdabbelt@google.com>
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- arch/riscv/Kconfig 15 additions, 0 deletionsarch/riscv/Kconfig
- arch/riscv/include/asm/kexec.h 49 additions, 0 deletionsarch/riscv/include/asm/kexec.h
- arch/riscv/kernel/Makefile 5 additions, 0 deletionsarch/riscv/kernel/Makefile
- arch/riscv/kernel/kexec_relocate.S 157 additions, 0 deletionsarch/riscv/kernel/kexec_relocate.S
- arch/riscv/kernel/machine_kexec.c 186 additions, 0 deletionsarch/riscv/kernel/machine_kexec.c
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