[RFC] SMP support for RISC-V privilege architecture
Katsuhiro Suzuki
Hello All,
I'm working on SMP support for RISC-V privilege architecture. https://github.com/katsuster/zephyr/tree/riscv_virt_pc_smp It seems worked well on QEMU RV32 virt pc (*) porting. (RV64 not tested yet) But I don't understand Zephyr's SMP mechanism perfectly and don't know required conditions (Ex. regression tests) if I want to change these area. I'm welcome comments or review of my patch. (*)QEMU RV32 virt pc: https://github.com/zephyrproject-rtos/zephyr/pull/28749 Diffs of config from default: CONFIG_RISCV_USE_SWITCH=y (added by me) CONFIG_SMP=y CONFIG_MP_NUM_CPUS=4 Command line: qemu-system-riscv32 -nographic -machine virt -net none \ -chardev stdio,id=con,mux=on -serial chardev:con \ -mon chardev=con,mode=readline -kernel zephyr/zephyr.elf \ -cpu rv32 -smp cpus=4 -bios none Best Regards, Katsuhiro Suzuki
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