Messages in this thread | | | Subject | Re: [RFC] /dev/ioasid uAPI proposal | From | Jason Wang <> | Date | Thu, 10 Jun 2021 12:03:52 +0800 |
| |
在 2021/6/10 上午10:00, Jason Wang 写道: > > 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.
IORING_OP_POLL_ADD actually.
Thanks
> > >> >> 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 >>
| |