Re: [PATCH v3 0/2] RDMA/rxe: Fix no completion event issue

[Li, Zhijian]

on 6/25/2022 8:59 PM, Yanjun Zhu wrote:
> 在 2022/6/7 16:32, lizhijian@xxxxxxxxxxx 写道:
> > Hi Json & Yanjun
> >
> >
> > I know there are still a few regressions on RXE, but i do wish you 
> > could take some time to review these *simple and bugfix* patches
> > They are not related to the regressions.
>
> Now there are some problems from Redhat and other Linux Vendors.
>
> We had better focus on these problems.

+ Xiao
I do believe regression is high priority,  and I'm very willing to contribute our efforts to improve the stability of RXE :)
Yang,Xiao and me tried to reproduce the issues in maillist and we also tried to review the their corresponding patches.
However actually we didn't find a unified way something like bugzilla to maintain the issues and their status, and most of
them are not reproduced by our local environment. So it's a bit hard for us to review/verify the patches especially for the
large/complicate patch if we don't have the use cases.

BTW, IMO we shouldn't stop reviewing other fixes expect recent regressions.

Zhijian

> Zhu Yanjun
>
> > Thanks
> > Zhijian
> >
> >
> > On 16/05/2022 09:53, Li Zhijian wrote:
> > > Since RXE always posts RDMA_WRITE successfully, it's observed that
> > > no more completion occurs after a few incorrect posts. Actually, it
> > > will block the polling. we can easily reproduce it by the below 
> > > pattern.
> > >
> > > a. post correct RDMA_WRITE
> > > b. poll completion event
> > > while true {
> > >     c. post incorrect RDMA_WRITE(wrong rkey for example)
> > >     d. poll completion event <<<< block after 2 incorrect RDMA_WRITE 
> > > posts
> > > }
> > >
> > >
> > > Li Zhijian (2):
> > >     RDMA/rxe: Update wqe_index for each wqe error completion
> > >     RDMA/rxe: Generate error completion for error requester QP state
> > >
> > >    drivers/infiniband/sw/rxe/rxe_req.c | 12 +++++++++++-
> > >    1 file changed, 11 insertions(+), 1 deletion(-)