diff options
Diffstat (limited to 'arch/powerpc/mm/pgtable_32.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable_32.c | 42 |
1 files changed, 22 insertions, 20 deletions
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index ded71126ce4c..6e56a6240bfa 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -254,26 +254,20 @@ static void __init __mapin_ram_chunk(unsigned long offset, unsigned long top) void __init mapin_ram(void) { - unsigned long s, top; - -#ifndef CONFIG_WII - top = total_lowmem; - s = mmu_mapin_ram(top); - __mapin_ram_chunk(s, top); -#else - if (!wii_hole_size) { - s = mmu_mapin_ram(total_lowmem); - __mapin_ram_chunk(s, total_lowmem); - } else { - top = wii_hole_start; - s = mmu_mapin_ram(top); - __mapin_ram_chunk(s, top); - - top = memblock_end_of_DRAM(); - s = wii_mmu_mapin_mem2(top); - __mapin_ram_chunk(s, top); + struct memblock_region *reg; + + for_each_memblock(memory, reg) { + phys_addr_t base = reg->base; + phys_addr_t top = min(base + reg->size, total_lowmem); + + if (base >= top) + continue; + base = mmu_mapin_ram(base, top); + if (IS_ENABLED(CONFIG_BDI_SWITCH)) + __mapin_ram_chunk(reg->base, top); + else + __mapin_ram_chunk(base, top); } -#endif } /* Scan the real Linux page tables and return a PTE pointer for @@ -359,7 +353,10 @@ void mark_initmem_nx(void) unsigned long numpages = PFN_UP((unsigned long)_einittext) - PFN_DOWN((unsigned long)_sinittext); - change_page_attr(page, numpages, PAGE_KERNEL); + if (v_block_mapped((unsigned long)_stext) + 1) + mmu_mark_initmem_nx(); + else + change_page_attr(page, numpages, PAGE_KERNEL); } #ifdef CONFIG_STRICT_KERNEL_RWX @@ -368,6 +365,11 @@ void mark_rodata_ro(void) struct page *page; unsigned long numpages; + if (v_block_mapped((unsigned long)_sinittext)) { + mmu_mark_rodata_ro(); + return; + } + page = virt_to_page(_stext); numpages = PFN_UP((unsigned long)_etext) - PFN_DOWN((unsigned long)_stext); |