tests: kernel: mem_protect: run tests with ARMV8-M MPU gap filling

We add a new test-case for the mem_protect and userspace tests,
to test the ARMv8-M MPU driver without the skipping of full SRAM
partitioning (i.e. gap filling).

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

tests/kernel/mem_protect/mem_protect/testcase.yaml

@@ -4,3 +4,9 @@ tests:
     filter: CONFIG_ARCH_HAS_USERSPACE
     platform_exclude: twr_ke18f
     tags: kernel security userspace ignore_faults
+  kernel.memory_protection.armv8m_gap_filling:
+    arch_whitelist: arm
+    filter: CONFIG_ARCH_HAS_USERSPACE and CONFIG_MPU_REQUIRES_NON_OVERLAPPING_REGIONS
+    extra_args: CONFIG_MPU_GAP_FILLING=y
+    min_ram: 32
+    tags: kernel security userspace ignore_faults

tests/kernel/mem_protect/userspace/testcase.yaml

@@ -3,3 +3,9 @@ tests:
     filter: CONFIG_ARCH_HAS_USERSPACE
     tags: kernel security userspace ignore_faults
     min_ram: 36
+  kernel.memory_protection.userspace.armv8m_gap_filling:
+    arch_whitelist: arm
+    filter: CONFIG_ARCH_HAS_USERSPACE and CONFIG_MPU_REQUIRES_NON_OVERLAPPING_REGIONS
+    extra_args: CONFIG_MPU_GAP_FILLING=y
+    tags: kernel security userspace ignore_faults
+    min_ram: 36