Re: [PATCH v5 3/3] vfio/pci: make use of irq_update_devid and optimize irq ops

在 2019/8/31 上午4:06, Alex Williamson 写道: On Fri, 30 Aug 2019 16:42:06 +0800 Ben Luo wrote: When userspace (e.g. qemu) triggers a switch between KVM irqfd and userspace eventfd, only dev_id of irqaction (i.e. the "trigger" in this patch's context) will be changed, but a free-then-request-irq a

Re: [PATCH v5 3/3] vfio/pci: make use of irq_update_devid and optimize irq ops

On Fri, 30 Aug 2019 16:42:06 +0800 Ben Luo wrote: > When userspace (e.g. qemu) triggers a switch between KVM > irqfd and userspace eventfd, only dev_id of irqaction > (i.e. the "trigger" in this patch's context) will be > changed, but a free-then-request-irq action is taken in > current code. And