Cc'ing Igor for vCPU hotplugging expertise.
On 10/2/25 10:36, Bibo Mao wrote:
> Interrupt controller ipi and extioi on LoongArch system can send
> intterrupt to multiple CPUs, physical cpu id is used to route interrupt
> for CPUs.
>
> With cpu hotplug feature in future, notification with ipi and extioi
> interrupt controller is required. Since there is common Notifier API for
> CPU hotplug, cpu hotplug interface is added on ipi and extioi class for
> notification usage.
>
> With CPU hotplug event notfication, gpio irq line is connected to cpu irq
> line, and irq routing for irqchip is setup.
>
> ---
> v1 .. v2:
> 1. Combine patchset ipi and extioi irq routing enhancement together
> 2. Rebase patch based on latest version
> ---
> Bibo Mao (7):
> hw/intc/loongarch_ipi: Add basic hotplug framework
> hw/intc/loongarch_ipi: Implment cpu hotplug interface
> hw/intc/loongarch_ipi: Notify ipi object when cpu is plugged
> hw/intc/loongarch_extioi: Move gpio irq initial to common code
> hw/intc/loongarch_extioi: Add basic hotplug framework
> hw/intc/loongarch_extioi: Implment cpu hotplug interface
> hw/intc/loongarch_extioi: Use cpu plug notification
>
> hw/intc/loongarch_extioi.c | 8 +--
> hw/intc/loongarch_extioi_common.c | 84 ++++++++++++++++++++++++++++++-
> hw/intc/loongarch_ipi.c | 71 ++++++++++++++++++++++++++
> hw/loongarch/virt.c | 17 ++-----
> 4 files changed, 159 insertions(+), 21 deletions(-)
>