Messages in this thread Patch in this message | | | Date | Wed, 24 Feb 2010 17:04:47 +0200 (EET) | From | Pekka J Enberg <> | Subject | [RFT/PATCH] x86: Unify kernel_physical_mapping_init() API |
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From: Pekka Enberg <penberg@cs.helsinki.fi>
This patch changes the 32-bit version of kernel_physical_mapping_init() to return the last mapped address like the 64-bit one so that we can unify the call-site in init_memory_mapping().
Cc: Yinghai Lu <yinghai@kernel.org> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> --- Note: I have only tested this on VirtualBox which is why I tagged the patch as RFT.
arch/x86/mm/init.c | 7 ------- arch/x86/mm/init_32.c | 8 +++++--- 2 files changed, 5 insertions(+), 10 deletions(-)
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index d406c52..e71c5cb 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -266,16 +266,9 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, if (!after_bootmem) find_early_table_space(end, use_pse, use_gbpages);
-#ifdef CONFIG_X86_32 - for (i = 0; i < nr_range; i++) - kernel_physical_mapping_init(mr[i].start, mr[i].end, - mr[i].page_size_mask); - ret = end; -#else /* CONFIG_X86_64 */ for (i = 0; i < nr_range; i++) ret = kernel_physical_mapping_init(mr[i].start, mr[i].end, mr[i].page_size_mask); -#endif
#ifdef CONFIG_X86_32 early_ioremap_page_table_range_init(); diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index 9a0c258..2226f2c 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -241,6 +241,7 @@ kernel_physical_mapping_init(unsigned long start, unsigned long page_size_mask) { int use_pse = page_size_mask == (1<<PG_LEVEL_2M); + unsigned long last_map_addr = end; unsigned long start_pfn, end_pfn; pgd_t *pgd_base = swapper_pg_dir; int pgd_idx, pmd_idx, pte_ofs; @@ -341,9 +342,10 @@ repeat: prot = PAGE_KERNEL_EXEC;
pages_4k++; - if (mapping_iter == 1) + if (mapping_iter == 1) { set_pte(pte, pfn_pte(pfn, init_prot)); - else + last_map_addr = (pfn << PAGE_SHIFT) + PAGE_SIZE; + } else set_pte(pte, pfn_pte(pfn, prot)); } } @@ -368,7 +370,7 @@ repeat: mapping_iter = 2; goto repeat; } - return 0; + return last_map_addr; }
pte_t *kmap_pte; -- 1.5.6.4
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