diff options
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/init.c | 66 |
1 files changed, 34 insertions, 32 deletions
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 51f919febf6..1ce0d033faf 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -274,16 +274,6 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, memset(mr, 0, sizeof(mr)); nr_range = split_mem_range(mr, 0, start, end); - /* - * Find space for the kernel direct mapping tables. - * - * Later we should allocate these tables in the local node of the - * memory mapped. Unfortunately this is done currently before the - * nodes are discovered. - */ - if (!after_bootmem) - find_early_table_space(start, end); - for (i = 0; i < nr_range; i++) ret = kernel_physical_mapping_init(mr[i].start, mr[i].end, mr[i].page_size_mask); @@ -296,6 +286,36 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, __flush_tlb_all(); + return ret >> PAGE_SHIFT; +} + +void __init init_mem_mapping(void) +{ + probe_page_size_mask(); + + /* + * Find space for the kernel direct mapping tables. + * + * Later we should allocate these tables in the local node of the + * memory mapped. Unfortunately this is done currently before the + * nodes are discovered. + */ +#ifdef CONFIG_X86_64 + find_early_table_space(0, max_pfn<<PAGE_SHIFT); +#else + find_early_table_space(0, max_low_pfn<<PAGE_SHIFT); +#endif + max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); + max_pfn_mapped = max_low_pfn_mapped; + +#ifdef CONFIG_X86_64 + if (max_pfn > max_low_pfn) { + max_pfn_mapped = init_memory_mapping(1UL<<32, + max_pfn<<PAGE_SHIFT); + /* can we preseve max_low_pfn ?*/ + max_low_pfn = max_pfn; + } +#endif /* * Reserve the kernel pagetable pages we used (pgt_buf_start - * pgt_buf_end) and free the other ones (pgt_buf_end - pgt_buf_top) @@ -311,32 +331,14 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, * RO all the pagetable pages, including the ones that are beyond * pgt_buf_end at that time. */ - if (!after_bootmem && pgt_buf_end > pgt_buf_start) + if (pgt_buf_end > pgt_buf_start) x86_init.mapping.pagetable_reserve(PFN_PHYS(pgt_buf_start), PFN_PHYS(pgt_buf_end)); - if (!after_bootmem) - early_memtest(start, end); + /* stop the wrong using */ + pgt_buf_top = 0; - return ret >> PAGE_SHIFT; -} - -void __init init_mem_mapping(void) -{ - probe_page_size_mask(); - - /* max_pfn_mapped is updated here */ - max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT); - max_pfn_mapped = max_low_pfn_mapped; - -#ifdef CONFIG_X86_64 - if (max_pfn > max_low_pfn) { - max_pfn_mapped = init_memory_mapping(1UL<<32, - max_pfn<<PAGE_SHIFT); - /* can we preseve max_low_pfn ?*/ - max_low_pfn = max_pfn; - } -#endif + early_memtest(0, max_pfn_mapped << PAGE_SHIFT); } /* |