[PATCH v5 2/5] lib/test_bitmap: add tests for bitmap_{read,write}()
Andy Shevchenko
andriy.shevchenko at linux.intel.com
Mon Sep 25 05:23:11 PDT 2023
On Mon, Sep 25, 2023 at 02:16:37PM +0200, Alexander Potapenko wrote:
...
> > +/*
> > + * Test bitmap should be big enough to include the cases when start is not in
> > + * the first word, and start+nbits lands in the following word.
> > + */
> > +#define TEST_BIT_LEN (1000)
>
> Dunno why this didn't fire previously, but CONFIG_CPU_BIG_ENDIAN=y
> kernel reports mismatches here, presumably because the last quad word
> ends up partially initialized.
Hmm... But if designed and used correctly it shouldn't be the issue,
and 1000, I believe, is carefully chosen to be specifically not dividable
by pow-of-2 value.
> The easiest fix is to make TEST_BIT_LEN divisible by 64 (e.g. 1024)
Wouldn't it hide the real issue somewhere?
--
With Best Regards,
Andy Shevchenko
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