Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[pandora-kernel.git] / arch / arm / mm / mmu.c

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 45a1bc2..2858941 100644 (file)
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -14,6 +14,7 @@
 #include <linux/bootmem.h>
 #include <linux/mman.h>
 #include <linux/nodemask.h>
+#include <linux/sort.h>
 
 #include <asm/cputype.h>
 #include <asm/mach-types.h>
@@ -603,7 +604,7 @@ static void __init create_36bit_mapping(struct map_desc *md,
  * offsets, and we take full advantage of sections and
  * supersections.
  */
-void __init create_mapping(struct map_desc *md)
+static void __init create_mapping(struct map_desc *md)
 {
        unsigned long phys, addr, length, end;
        const struct mem_type *type;
@@ -1018,6 +1019,39 @@ static void __init kmap_init(void)
 #endif
 }
 
+static inline void map_memory_bank(struct membank *bank)
+{
+       struct map_desc map;
+
+       map.pfn = bank_pfn_start(bank);
+       map.virtual = __phys_to_virt(bank_phys_start(bank));
+       map.length = bank_phys_size(bank);
+       map.type = MT_MEMORY;
+
+       create_mapping(&map);
+}
+
+static void __init map_lowmem(void)
+{
+       struct meminfo *mi = &meminfo;
+       int i;
+
+       /* Map all the lowmem memory banks. */
+       for (i = 0; i < mi->nr_banks; i++) {
+               struct membank *bank = &mi->bank[i];
+
+               if (!bank->highmem)
+                       map_memory_bank(bank);
+       }
+}
+
+static int __init meminfo_cmp(const void *_a, const void *_b)
+{
+       const struct membank *a = _a, *b = _b;
+       long cmp = bank_pfn_start(a) - bank_pfn_start(b);
+       return cmp < 0 ? -1 : cmp > 0 ? 1 : 0;
+}
+
 /*
  * paging_init() sets up the page tables, initialises the zone memory
  * maps, and sets up the zero page, bad page and bad page tables.
@@ -1026,9 +1060,12 @@ void __init paging_init(struct machine_desc *mdesc)
 {
        void *zero_page;
 
+       sort(&meminfo.bank, meminfo.nr_banks, sizeof(meminfo.bank[0]), meminfo_cmp, NULL);
+
        build_mem_type_table();
        sanity_check_meminfo();
        prepare_page_table();
+       map_lowmem();
        bootmem_init();
        devicemaps_init(mdesc);
        kmap_init();