Messages in this thread | | | Subject | Re: [RFC] /dev/ioasid uAPI proposal | From | Jason Wang <> | Date | Wed, 2 Jun 2021 16:54:26 +0800 |
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在 2021/6/2 上午1:31, Jason Gunthorpe 写道: > On Tue, Jun 01, 2021 at 04:47:15PM +0800, Jason Wang wrote: > >> We can open up to ~0U file descriptors, I don't see why we need to restrict >> it in uAPI. > There are significant problems with such large file descriptor > tables. High FD numbers man things like select don't work at all > anymore and IIRC there are more complications.
I don't see how much difference for IOASID and other type of fds. People can choose to use poll or epoll.
And with the current proposal, (assuming there's a N:1 ioasid to ioasid). I wonder how select can work for the specific ioasid.
Thanks
> > A huge number of FDs for typical usages should be avoided. > > Jason >
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