Re: [PATCH v4 0/7] mm/mprotect: Fix dax puds

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed,  7 Aug 2024 15:48:04 -0400 Peter Xu <peterx@xxxxxxxxxx> wrote:

> 
> Tests
> =====
> 
> What I did test:
> 
> - cross-build tests that I normally cover [1]
> 
> - smoke tested on x86_64 the simplest program [2] on dev_dax 1G PUD
>   mprotect() using QEMU's nvdimm emulations [3] and ndctl to create
>   namespaces with proper alignments, which used to throw "bad pud" but now
>   it'll run through all fine.  I checked sigbus happens if with illegal
>   access on protected puds.
> 
> - vmtests.
> 
> What I didn't test:
> 
> - fsdax: I wanted to also give it a shot, but only until then I noticed it
>   doesn't seem to be supported (according to dax_iomap_fault(), which will
>   always fallback on PUD_ORDER).  I did remember it was supported before, I
>   could miss something important there.. please shoot if so.

OK.  Who are you addressing this question to?

> - userfault wp-async: I also wanted to test userfault-wp async be able to
>   split huge puds (here it's simply a clear_pud.. though), but it won't
>   work for devdax anyway due to not allowed to do smaller than 1G faults in
>   this case. So skip too.

Sounds OK.  So that's an additional project if anyone cares enough?

> - Power, as no hardware on hand.

Hopefully the powerpc people can help with that.  What tests do you ask
that they run?





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux