This patchset primarily adds IRQ affinity support in PLIC driver and other improvements.
The patchset gives mechanism for explicitly routing external interrupts to particular CPUs using smp_affinity attribute of each Linux IRQs. Also, we can now use IRQ balancer from kernel-space or user-space. The patchset is tested on QEMU virt machine. It is based on Linux-4.19-rc2 and can be found at riscv_plic_irq_affinity_v1 branch of: https://github.com/avpatel/linux.git Anup Patel (4): irqchip: sifive-plic: Pre-compute context hart base and enable base irqchip: sifive-plic: More flexible plic_irq_toggle() irqchip: sifive-plic: Differentiate between PLIC handler and context irqchip: sifive-plic: Implement irq_set_affinity() for SMP host drivers/irqchip/irq-sifive-plic.c | 164 ++++++++++++++++++------------ 1 file changed, 99 insertions(+), 65 deletions(-) -- 2.17.1
