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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-12-08 18:02:04 +0000 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-12-08 18:02:04 +0000 |
commit | 6ae25a5b9d7ba86d6ac19c403dfa57dae6caa73d (patch) | |
tree | 41d04269f268d6162e5f1866496dd42fbc79d2a4 /arch/arm/mm/ioremap.c | |
parent | 3ee0fc5ca129cbae81c073756febcb1c552af446 (diff) | |
parent | 497b7e943d0dc5743454de56dcdb67352bbf96b2 (diff) | |
download | kernel_goldelico_gta04-6ae25a5b9d7ba86d6ac19c403dfa57dae6caa73d.zip kernel_goldelico_gta04-6ae25a5b9d7ba86d6ac19c403dfa57dae6caa73d.tar.gz kernel_goldelico_gta04-6ae25a5b9d7ba86d6ac19c403dfa57dae6caa73d.tar.bz2 |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux into devel-stable
Conflicts:
arch/arm/mm/ioremap.c
Diffstat (limited to 'arch/arm/mm/ioremap.c')
-rw-r--r-- | arch/arm/mm/ioremap.c | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index 12c7ad2..80632e8 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -58,7 +58,7 @@ void __check_kvm_seq(struct mm_struct *mm) } while (seq != init_mm.context.kvm_seq); } -#ifndef CONFIG_SMP +#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE) /* * Section support is unsafe on SMP - If you iounmap and ioremap a region, * the other CPUs will not see this change until their next context switch. @@ -73,13 +73,16 @@ static void unmap_area_sections(unsigned long virt, unsigned long size) { unsigned long addr = virt, end = virt + (size & ~(SZ_1M - 1)); pgd_t *pgd; + pud_t *pud; + pmd_t *pmdp; flush_cache_vunmap(addr, end); pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmdp = pmd_offset(pud, addr); do { - pmd_t pmd, *pmdp = pmd_offset(pgd, addr); + pmd_t pmd = *pmdp; - pmd = *pmdp; if (!pmd_none(pmd)) { /* * Clear the PMD from the page table, and @@ -98,8 +101,8 @@ static void unmap_area_sections(unsigned long virt, unsigned long size) pte_free_kernel(&init_mm, pmd_page_vaddr(pmd)); } - addr += PGDIR_SIZE; - pgd++; + addr += PMD_SIZE; + pmdp += 2; } while (addr < end); /* @@ -118,6 +121,8 @@ remap_area_sections(unsigned long virt, unsigned long pfn, { unsigned long addr = virt, end = virt + size; pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; /* * Remove and free any PTE-based mapping, and @@ -126,17 +131,17 @@ remap_area_sections(unsigned long virt, unsigned long pfn, unmap_area_sections(virt, size); pgd = pgd_offset_k(addr); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); do { - pmd_t *pmd = pmd_offset(pgd, addr); - pmd[0] = __pmd(__pfn_to_phys(pfn) | type->prot_sect); pfn += SZ_1M >> PAGE_SHIFT; pmd[1] = __pmd(__pfn_to_phys(pfn) | type->prot_sect); pfn += SZ_1M >> PAGE_SHIFT; flush_pmd_entry(pmd); - addr += PGDIR_SIZE; - pgd++; + addr += PMD_SIZE; + pmd += 2; } while (addr < end); return 0; @@ -148,6 +153,8 @@ remap_area_supersections(unsigned long virt, unsigned long pfn, { unsigned long addr = virt, end = virt + size; pgd_t *pgd; + pud_t *pud; + pmd_t *pmd; /* * Remove and free any PTE-based mapping, and @@ -156,6 +163,8 @@ remap_area_supersections(unsigned long virt, unsigned long pfn, unmap_area_sections(virt, size); pgd = pgd_offset_k(virt); + pud = pud_offset(pgd, addr); + pmd = pmd_offset(pud, addr); do { unsigned long super_pmd_val, i; @@ -164,14 +173,12 @@ remap_area_supersections(unsigned long virt, unsigned long pfn, super_pmd_val |= ((pfn >> (32 - PAGE_SHIFT)) & 0xf) << 20; for (i = 0; i < 8; i++) { - pmd_t *pmd = pmd_offset(pgd, addr); - pmd[0] = __pmd(super_pmd_val); pmd[1] = __pmd(super_pmd_val); flush_pmd_entry(pmd); - addr += PGDIR_SIZE; - pgd++; + addr += PMD_SIZE; + pmd += 2; } pfn += SUPERSECTION_SIZE >> PAGE_SHIFT; @@ -189,11 +196,13 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, unsigned long addr; struct vm_struct * area; +#ifndef CONFIG_ARM_LPAE /* * High mappings must be supersection aligned */ if (pfn >= 0x100000 && (__pfn_to_phys(pfn) & ~SUPERSECTION_MASK)) return NULL; +#endif type = get_mem_type(mtype); if (!type) @@ -237,7 +246,7 @@ void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn, return NULL; addr = (unsigned long)area->addr; -#ifndef CONFIG_SMP +#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE) if (DOMAIN_IO == 0 && (((cpu_architecture() >= CPU_ARCH_ARMv6) && (get_cr() & CR_XP)) || cpu_is_xsc3()) && pfn >= 0x100000 && @@ -343,7 +352,7 @@ void __iounmap(volatile void __iomem *io_addr) read_unlock(&vmlist_lock); return; } -#ifndef CONFIG_SMP +#if !defined(CONFIG_SMP) && !defined(CONFIG_ARM_LPAE) /* * If this is a section based mapping we need to handle it * specially as the VM subsystem does not know how to handle |