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 <redacted>

Acked-by: Vlastimil Babka <redacted>