> Even though we no longer call smp_function if an IPI was not sent by > U-Boot, we still need to clear any IPIs which were pending from the > execution environment. Otherwise, secondary harts will busy-wait in > secondary_hart_loop, instead of relaxing. > > Along with the previous commit ("riscv: Use a valid bit to ignore > already-pending IPIs"), this fixes SMP booting on the Kendryte K210. > > Signed-off-by: Sean Anderson <sean...@gmail.com> > Reviewed-by: Bin Meng <bin.m...@windriver.com> > > --- > > Changes in v3: > - Rename riscv_ipi_init_secondary_hart to dummy_pending_ipi_clear > - Only compile dummy_pending_ipi_clear when SMP is enabled > > Changes in v2: > - Make riscv_ipi_init_secondary_hart static > > arch/riscv/cpu/cpu.c | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) >
Reviewed-by: Rick Chen <r...@andestech.com>