Eric added the qemu_irq/gsi hash table to let VFIO platform device setup irqfd when kvm enabled [1]. And he setup the qemu_irq/gsi mapping in arm_gic_kvm.c [2]. But this mapping is not setting up in arm_gicv3_kvm.c. When VM use VFIO platform device with gicv3, the irqfd setup will fail and fallback to userspace handled eventfd in `vfio_start_irqfd_injection`.
This patch will setup the qemu_irq/gsi mapping for gicv3, so that VFIO platform device with gicv3 can use kvm irqfd to accelerate. [1] https://lore.kernel.org/qemu-devel/20150706183506.15635.61812.st...@gimli.home/ [2] https://lore.kernel.org/qemu-devel/20150706183512.15635.915.st...@gimli.home/ Signed-off-by: Luca Wei <luca....@verisilicon.com> --- hw/intc/arm_gicv3_kvm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/intc/arm_gicv3_kvm.c b/hw/intc/arm_gicv3_kvm.c index 72ad916d3d..7e90f8b723 100644 --- a/hw/intc/arm_gicv3_kvm.c +++ b/hw/intc/arm_gicv3_kvm.c @@ -807,6 +807,11 @@ static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp) gicv3_init_irqs_and_mmio(s, kvm_arm_gicv3_set_irq, NULL); + for (i = 0; i < s->num_irq - GIC_INTERNAL; i++) { + qemu_irq irq = qdev_get_gpio_in(dev, i); + kvm_irqchip_set_qemuirq_gsi(kvm_state, irq, i); + } + for (i = 0; i < s->num_cpu; i++) { ARMCPU *cpu = ARM_CPU(qemu_get_cpu(i)); -- 2.41.0.windows.3
