diff options
Diffstat (limited to 'exec.c')
| -rw-r--r-- | exec.c | 29 |
1 files changed, 8 insertions, 21 deletions
@@ -160,29 +160,21 @@ typedef struct PageDesc { #define L2_BITS 10 #define L2_SIZE (1 << L2_BITS) +#define P_L2_LEVELS \ + (((TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS - 1) / L2_BITS) + 1) + /* The bits remaining after N lower levels of page tables. */ -#define P_L1_BITS_REM \ - ((TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS) #define V_L1_BITS_REM \ ((L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS) % L2_BITS) -/* Size of the L1 page table. Avoid silly small sizes. */ -#if P_L1_BITS_REM < 4 -#define P_L1_BITS (P_L1_BITS_REM + L2_BITS) -#else -#define P_L1_BITS P_L1_BITS_REM -#endif - #if V_L1_BITS_REM < 4 #define V_L1_BITS (V_L1_BITS_REM + L2_BITS) #else #define V_L1_BITS V_L1_BITS_REM #endif -#define P_L1_SIZE ((target_phys_addr_t)1 << P_L1_BITS) #define V_L1_SIZE ((target_ulong)1 << V_L1_BITS) -#define P_L1_SHIFT (TARGET_PHYS_ADDR_SPACE_BITS - TARGET_PAGE_BITS - P_L1_BITS) #define V_L1_SHIFT (L1_MAP_ADDR_SPACE_BITS - TARGET_PAGE_BITS - V_L1_BITS) unsigned long qemu_real_host_page_size; @@ -202,7 +194,7 @@ typedef struct PhysPageDesc { /* This is a multi-level map on the physical address space. The bottom level has pointers to PhysPageDesc. */ -static void *l1_phys_map[P_L1_SIZE]; +static void *phys_map; static void io_mem_init(void); static void memory_map_init(void); @@ -404,11 +396,10 @@ static PhysPageDesc *phys_page_find_alloc(target_phys_addr_t index, int alloc) void **lp; int i; - /* Level 1. Always allocated. */ - lp = l1_phys_map + ((index >> P_L1_SHIFT) & (P_L1_SIZE - 1)); + lp = &phys_map; - /* Level 2..N-1. */ - for (i = P_L1_SHIFT / L2_BITS - 1; i > 0; i--) { + /* Level 1..N-1. */ + for (i = P_L2_LEVELS - 1; i > 0; i--) { void **p = *lp; if (p == NULL) { if (!alloc) { @@ -2560,11 +2551,7 @@ static void destroy_l2_mapping(void **lp, unsigned level) static void destroy_all_mappings(void) { - unsigned i; - - for (i = 0; i < P_L1_SIZE; ++i) { - destroy_l2_mapping(&l1_phys_map[i], P_L1_SHIFT / L2_BITS - 1); - } + destroy_l2_mapping(&phys_map, P_L2_LEVELS - 1); } /* register physical memory. |