tests: mem_protect/mem_map: pin test_page in memory

This pins the test_page in memory for tests about memory
mapping. This is simply to make sure the whole array
is in physical memory for mapping or else the mapping
function would fail due to having nothing to map.

Signed-off-by: Daniel Leung <[email protected]>

Author: dcpleung

tests/kernel/mem_protect/mem_map/src/main.c

@@ -8,6 +8,7 @@
 #include <sys/mem_manage.h>
 #include <toolchain.h>
 #include <mmu.h>
+#include <linker/sections.h>
 
 /* 32-bit IA32 page tables have no mechanism to restrict execution */
 #if defined(CONFIG_X86) && !defined(CONFIG_X86_64) && !defined(CONFIG_X86_PAE)
@@ -17,6 +18,7 @@
 #define BASE_FLAGS	(K_MEM_CACHE_WB)
 volatile bool expect_fault;
 
+__pinned_noinit
 static uint8_t __aligned(CONFIG_MMU_PAGE_SIZE)
 			test_page[2 * CONFIG_MMU_PAGE_SIZE];