diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memblock.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index 3c474502d92..a925866e145 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -13,6 +13,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/bitops.h> +#include <linux/poison.h> #include <linux/memblock.h> struct memblock memblock; @@ -112,6 +113,10 @@ void __init memblock_init(void) memblock.reserved.regions = memblock_reserved_init_regions; memblock.reserved.max = INIT_MEMBLOCK_REGIONS; + /* Write a marker in the unused last array entry */ + memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE; + memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE; + /* Create a dummy zero size MEMBLOCK which will get coalesced away later. * This simplifies the memblock_add() code below... */ @@ -131,6 +136,12 @@ void __init memblock_analyze(void) { int i; + /* Check marker in the unused last array entry */ + WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base + != (phys_addr_t)RED_INACTIVE); + WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base + != (phys_addr_t)RED_INACTIVE); + memblock.memory_size = 0; for (i = 0; i < memblock.memory.cnt; i++) |