Re: [PATCH 3/4] tools/selftests: expand all guard region tests to file-backed

[Vlastimil Babka]

On 2/13/25 19:17, Lorenzo Stoakes wrote:
> Extend the guard region tests to allow for test fixture variants for anon,
> shmem, and local file files.
> 
> This allows us to assert that each of the expected behaviours of anonymous
> memory also applies correctly to file-backed (both shmem and an a file
> created locally in the current working directory) and thus asserts the same
> correctness guarantees as all the remaining tests do.
> 
> The fixture teardown is now performed in the parent process rather than
> child forked ones, meaning cleanup is always performed, including unlinking
> any generated temporary files.
> 
> Additionally the variant fixture data type now contains an enum value
> indicating the type of backing store and the mmap() invocation is
> abstracted to allow for the mapping of whichever backing store the variant
> is testing.
> 
> We adjust tests as necessary to account for the fact they may now reference
> files rather than anonymous memory.
> 
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>