diff --git a/kernel/Kconfig.vm b/kernel/Kconfig.vm
index 923d511d9dbd..009d409e5f1c 100644
--- a/kernel/Kconfig.vm
+++ b/kernel/Kconfig.vm
@@ -100,7 +100,7 @@ endif # KERNEL_VM_SUPPORT
 
 menuconfig MMU
 	bool "MMU features"
-	depends on CPU_HAS_MMU
+	depends on CPU_HAS_MMU && (!X86 || (X86 && X86_MMU))
 	select KERNEL_VM_SUPPORT
 	help
 	  This option is enabled when the CPU's memory management unit is active
diff --git a/tests/posix/xsi_realtime/testcase.yaml b/tests/posix/xsi_realtime/testcase.yaml
index d3b98962cf2d..f084983c38b3 100644
--- a/tests/posix/xsi_realtime/testcase.yaml
+++ b/tests/posix/xsi_realtime/testcase.yaml
@@ -13,10 +13,6 @@ common:
   platform_exclude:
     # linker_zephyr_pre0.cmd:140: syntax error (??)
     - qemu_xtensa/dc233c
-    # CONFIG_MMU=y but no arch_mem_map() or arch_mem_unmap()
-    - intel_ish_5_4_1
-    - intel_ish_5_6_0
-    - intel_ish_5_8_0
     - native_sim
     - native_sim/native/64
 tests: