Re: io_uring failure on parisc with VIPT caches

[Jens Axboe <axboe@kernel.dk>]

On 2/15/23 9:38 AM, John David Anglin wrote:
> On 2023-02-15 10:56 a.m., Jens Axboe wrote:
>>> Is there maybe somewhere a more detailled testcase which I could try too?
>> Just git clone liburing:
>>
>> git clone git://git.kernel.dk/liburing
>>
>> and run make && make runtests in there, that'll go through the whole
>> regression suite.
> Here are test results for Debian liburing 2.3-3 (hppa) with Helge's original patch:
> https://buildd.debian.org/status/fetch.php?pkg=liburing&arch=hppa&ver=2.3-3&stamp=1676478898&raw=0

Most of the test failures seem to be related to O_DIRECT opens, which
I'm guessing is because it's run on an fs without O_DIRECT support?
Outside of that, I think some of the syzbot cases are just generally
broken on various archs.

Lastly, there's a few of these:

Running test buf-ring.t                                             bad run 0/0 = -233

and similar (like -223) which I really don't know what is, where do
these values come from? Ah hang on, they are in the parisc errno,
so that'd be -ENOBUFS and -EOPNOTSUPP. I wonder if there's some
discrepancy between the kernel and user side errno values here?

-- 
Jens Axboe