This patch series implements following smp related features. Some of the work has been inspired from ARM64.
1. Decouple linux logical cpu ids from hardware cpu id 2. Introduce cpu_operations structure for better flexibility & extesnability of future smp enablement methods. It also makes it easier to implement different booting algorithms later. 3. Support cpu hotplug. Tested on QEMU & HighFive Unleashed board with/without SMP enabled. Atish Patra (5): RISC-V: Add logical CPU indexing for RISC-V RISC-V: Use Linux logical cpu number instead of hartid RISC-V: Add cpu_operatios structure RISC-V: Move interrupt cause declarations to irq.h RISC-V: Support cpu hotplug. arch/riscv/Kconfig | 12 ++- arch/riscv/include/asm/irq.h | 7 ++ arch/riscv/include/asm/smp.h | 42 +++++++++- arch/riscv/include/asm/tlbflush.h | 17 +++- arch/riscv/kernel/cpu.c | 4 +- arch/riscv/kernel/head.S | 13 +++ arch/riscv/kernel/irq.c | 7 -- arch/riscv/kernel/process.c | 7 ++ arch/riscv/kernel/setup.c | 27 +++++++ arch/riscv/kernel/smp.c | 51 +++++++++--- arch/riscv/kernel/smpboot.c | 161 +++++++++++++++++++++++++++++++++----- arch/riscv/kernel/traps.c | 6 +- drivers/clocksource/riscv_timer.c | 12 ++- drivers/irqchip/irq-sifive-plic.c | 11 ++- 14 files changed, 325 insertions(+), 52 deletions(-) -- 2.7.4
