Re: [PATCHSET 0/5] User mapped provided buffer rings

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On 2023-03-17 11:57 a.m., Jens Axboe wrote:
Running test buf-ring.t register buf ring failed -22
test_full_page_reg failed
Test buf-ring.t failed with ret 1
The buf-ring failure with the patch from my previous message is because
it manually tries to set up a ring with an address that won't work. The
test case itself never uses the ring, it's just a basic
register/unregister test. So would just need updating if that patch goes
in to pass on hppa, there's nothing inherently wrong here.

I would suggest it.  From page F-7 of the PA-RISC 2.0 Architecture:

   All other uses of non-equivalent aliasing (including simultaneously enabling multiple non-equivalently
   aliased translations where one or more allow for write access) are prohibited, and can cause machine
   checks or silent data corruption, including data corruption of unrelated memory on unrelated pages.


John David Anglin  dave.anglin@xxxxxxxx

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