Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH] x86: move fix mapping page table range early | Date | Wed, 25 Jun 2008 21:51:28 -0700 |
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do that in init_memory_mapping
also remove one init_ohci1394_dma_on_all_controllers
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
--- arch/x86/kernel/setup.c | 23 +++++++++-------------- arch/x86/mm/init_32.c | 15 +++++++++++---- 2 files changed, 20 insertions(+), 18 deletions(-)
Index: linux-2.6/arch/x86/kernel/setup.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/setup.c +++ linux-2.6/arch/x86/kernel/setup.c @@ -615,11 +615,6 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_X86_32 probe_roms(); -#else -# ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT - if (init_ohci1394_dma_early) - init_ohci1394_dma_on_all_controllers(); -# endif #endif /* after parse_early_param, so could debug it */ @@ -679,6 +674,15 @@ void __init setup_arch(char **cmdline_p) #endif init_memory_mapping(0, (max_low_pfn << PAGE_SHIFT)); + /* + * NOTE: On x86-32, only from this point on, fixmaps are ready for use. + */ + +#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT + if (init_ohci1394_dma_early) + init_ohci1394_dma_on_all_controllers(); +#endif + reserve_initrd(); #ifdef CONFIG_X86_64 @@ -746,15 +750,6 @@ void __init setup_arch(char **cmdline_p) map_vsyscall(); #endif - /* - * NOTE: On x86-32, only from this point on, fixmaps are ready for use. - */ - -#if defined(CONFIG_PROVIDE_OHCI1394_DMA_INIT) && defined(CONFIG_X86_32) - if (init_ohci1394_dma_early) - init_ohci1394_dma_on_all_controllers(); -#endif - #ifdef CONFIG_X86_GENERICARCH generic_apic_probe(); #endif Index: linux-2.6/arch/x86/mm/init_32.c =================================================================== --- linux-2.6.orig/arch/x86/mm/init_32.c +++ linux-2.6/arch/x86/mm/init_32.c @@ -442,13 +442,10 @@ void __init native_pagetable_setup_done( * be partially populated, and so it avoids stomping on any existing * mappings. */ -static void __init pagetable_init(void) +static void __init early_ioremap_page_table_range_init(pgd_t *pgd_base) { - pgd_t *pgd_base = swapper_pg_dir; unsigned long vaddr, end; - paravirt_pagetable_setup_start(pgd_base); - /* * Fixed mappings, only the page table structure has to be * created - mappings will be set by set_fixmap(): @@ -458,6 +455,13 @@ static void __init pagetable_init(void) end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK; page_table_range_init(vaddr, end, pgd_base); early_ioremap_reset(); +} + +static void __init pagetable_init(void) +{ + pgd_t *pgd_base = swapper_pg_dir; + + paravirt_pagetable_setup_start(pgd_base); permanent_kmaps_init(pgd_base); @@ -783,6 +787,8 @@ unsigned long __init_refok init_memory_m kernel_physical_mapping_init(pgd_base, start, end); + early_ioremap_page_table_range_init(pgd_base); + load_cr3(swapper_pg_dir); __flush_tlb_all(); @@ -794,6 +800,7 @@ unsigned long __init_refok init_memory_m return end >> PAGE_SHIFT; } + /* * paging_init() sets up the page tables - note that the first 8MB are * already mapped by head.S.
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