On 2021/3/5 11:37 上午, Yongji Xie wrote:
On Fri, Mar 5, 2021 at 11:11 AM Jason Wang <jasowang@xxxxxxxxxx> wrote:
On 2021/3/4 4:19 下午, Yongji Xie wrote:
On Thu, Mar 4, 2021 at 3:30 PM Jason Wang <jasowang@xxxxxxxxxx> wrote:
On 2021/2/23 7:50 下午, Xie Yongji wrote:
Add a parameter for the ioctl VDUSE_INJECT_VQ_IRQ to support
injecting virtqueue's interrupt to the specified cpu.
How userspace know which CPU is this irq for? It looks to me we need to
do it at different level.
E.g introduce some API in sys to allow admin to tune for that.
But I think we can do that in antoher patch on top of this series.
OK. I will think more about it.
It should be soemthing like
/sys/class/vduse/$dev_name/vq/0/irq_affinity. Also need to make sure
eventfd could not be reused.
Looks like we doesn't use eventfd now. Do you mean we need to use
eventfd in this case?
No, I meant if we're using eventfd, do we allow a single eventfd to be
used for injecting irq for more than one virtqueue? (If not, I guess it
should be ok).
Thanks
Thanks,
Yongji
