[PATCH] testsuite/spcache01: Clear allocated coherent cache memory

[Sebastian Huber]

On 18/10/2021 09:53, Chris Johns wrote:
> On 18/10/21 4:50 pm, Sebastian Huber wrote:
>> On 18/10/2021 07:19,chrisj at rtems.org  wrote:
>>> From: Chris Johns<chrisj at rtems.org>
>>>
>>> - Coherent cache memory is used in libbsd for things like descriptors
>>>     and it optionally clears the memory on allocation. Test is works.
>> There is no guarantee that memset() and memcpy() work with cache coherent
>> memory. Such memory areas may disallow misaligned access for example.
> That seems reasonable however this change about testing the implicit
> requirements we have that memset works. LibBSD requires memset works ...
> 
> https://git.rtems.org/rtems-libbsd/tree/rtemsbsd/rtems/rtems-kernel-bus-dma.c?h=6-freebsd-12#n260

Using memset() here could be a bug in libbsd.

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