netdev - Re: Re: [RFC v4 11/11] vduse: Support binding irq to the specified cpu

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Date:   Thu, 4 Mar 2021 16:19:06 +0800
From:   Yongji Xie <xieyongji@...edance.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Stefan Hajnoczi <stefanha@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>,
        Parav Pandit <parav@...dia.com>, Bob Liu <bob.liu@...cle.com>,
        Christoph Hellwig <hch@...radead.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Matthew Wilcox <willy@...radead.org>, viro@...iv.linux.org.uk,
        Jens Axboe <axboe@...nel.dk>, bcrl@...ck.org,
        Jonathan Corbet <corbet@....net>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        kvm@...r.kernel.org, linux-aio@...ck.org,
        linux-fsdevel@...r.kernel.org
Subject: Re: Re: [RFC v4 11/11] vduse: Support binding irq to the specified cpu

On Thu, Mar 4, 2021 at 3:30 PM Jason Wang <jasowang@...hat.com> 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.

Thanks,
Yongji