Re: [PATCH v4 02/39] dm vdo: add the MurmurHash3 fast hashing algorithm

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On 3/18/24 13:37, Kenneth Raeburn wrote:
(resend because of accidental HTML lossage)

On Thu, Mar 14, 2024 at 7:38 PM Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
On sparc64, with gcc 11.4, the above code results in:

ERROR: modpost: "__bswapdi2" [drivers/md/dm-vdo/dm-vdo.ko] undefined!

Guenter

Thanks for catching that. I don't think our team has any sparc
machines readily available for testing.
This is an artifact of our having imported user-mode code to use in
the kernel. We should probably be using le64_to_cpup and friends, as
we do elsewhere, so it doesn't try to pull in libgcc support routines.


I am kind of getting wary about reporting such issues. Should I drop
building dm-vdo images for sparc ? Would it be possible to add
"depends on BROKEN if SPARC" configuration option to indicate that
the code isn't expected to be buildable on sparc, much less work ?

Thanks,
Guenter





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