diff options
| author | Vinod Rex <vrex@nvidia.com> | 2011-10-07 11:30:35 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:49:18 -0800 |
| commit | 3e6793f5b88bdbe33294bb50f7424c0a3af70b0a (patch) | |
| tree | 472746a8ffb1d80d2ceb7376f578636d0b4ed2c2 /arch/arm/mm/mmu.c | |
| parent | 25ff8cf8fae7de0a7a47afbe54ea4e298b93e66d (diff) | |
arm: mm: change_page_attr support
bug 865816
Adapted from x86 change_page_attr() implementation
Change-Id: I398c9d460b841484de4fcfcac10ffffdf49a4a5a
Reviewed-on: http://git-master/r/56769
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Tested-by: Krishna Reddy <vdumpa@nvidia.com>
Rebase-Id: Rddeccf358c948ba84af52316f084814ae53dca5e
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 594d677b92c8..fd38662098cd 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -554,6 +554,7 @@ static void __init alloc_init_section(pud_t *pud, unsigned long addr, const struct mem_type *type) { pmd_t *pmd = pmd_offset(pud, addr); + unsigned long pages_2m = 0, pages_4k = 0; /* * Try a section mapping - end, addr and phys must all be aligned @@ -572,6 +573,8 @@ static void __init alloc_init_section(pud_t *pud, unsigned long addr, phys += SECTION_SIZE; } while (pmd++, addr += SECTION_SIZE, addr != end); + pages_2m += (end-addr) >> SECTION_SHIFT; + flush_pmd_entry(p); } else { /* @@ -579,6 +582,12 @@ static void __init alloc_init_section(pud_t *pud, unsigned long addr, * individual L1 entries. */ alloc_init_pte(pmd, addr, end, __phys_to_pfn(phys), type); + pages_4k += (end-addr) >> PAGE_SHIFT; + } + + if ((addr < lowmem_limit) && (end < lowmem_limit)) { + update_page_count(PG_LEVEL_2M, pages_2m); + update_page_count(PG_LEVEL_4K, pages_4k); } } @@ -757,7 +766,7 @@ static int __init early_vmalloc(char *arg) } early_param("vmalloc", early_vmalloc); -static phys_addr_t lowmem_limit __initdata = 0; +phys_addr_t lowmem_limit; void __init sanity_check_meminfo(void) { |