Messages in this thread | | | Subject | Re: [RFC] /dev/ioasid uAPI proposal | From | Jason Wang <> | Date | Thu, 10 Jun 2021 10:00:01 +0800 |
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在 2021/6/8 下午9:20, Jason Gunthorpe 写道: > On Tue, Jun 08, 2021 at 09:10:42AM +0800, Jason Wang wrote: > >> Well, this sounds like a re-invention of io_uring which has already worked >> for multifds. > How so? io_uring is about sending work to the kernel, not getting > structued events back?
Actually it can. Userspace can poll multiple fds via preparing multiple sqes with IORING_OP_ADD flag.
> > It is more like one of the perf rings
This means another ring and we need introduce ioctl() to add or remove ioasids from the poll. And it still need a kind of fallback like a list if the ring is full.
Thanks
> > Jason >
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