diff options
| -rw-r--r-- | Documentation/arm/memory.txt | 2 | ||||
| -rw-r--r-- | arch/arm/include/asm/fixmap.h | 2 | ||||
| -rw-r--r-- | arch/arm/mm/highmem.c | 15 | ||||
| -rw-r--r-- | arch/arm/mm/mmu.c | 6 |
4 files changed, 13 insertions, 12 deletions
diff --git a/Documentation/arm/memory.txt b/Documentation/arm/memory.txt index 38dc06d0a791..4178ebda6e66 100644 --- a/Documentation/arm/memory.txt +++ b/Documentation/arm/memory.txt @@ -41,7 +41,7 @@ fffe8000 fffeffff DTCM mapping area for platforms with fffe0000 fffe7fff ITCM mapping area for platforms with ITCM mounted inside the CPU. -ffc00000 ffdfffff Fixmap mapping region. Addresses provided +ffc00000 ffefffff Fixmap mapping region. Addresses provided by fix_to_virt() will be located here. fee00000 feffffff Mapping of PCI I/O space. This is a static diff --git a/arch/arm/include/asm/fixmap.h b/arch/arm/include/asm/fixmap.h index a7add6f9315d..d984ca69ce19 100644 --- a/arch/arm/include/asm/fixmap.h +++ b/arch/arm/include/asm/fixmap.h @@ -2,7 +2,7 @@ #define _ASM_FIXMAP_H #define FIXADDR_START 0xffc00000UL -#define FIXADDR_END 0xffe00000UL +#define FIXADDR_END 0xfff00000UL #define FIXADDR_TOP (FIXADDR_END - PAGE_SIZE) #include <asm/kmap_types.h> diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c index 45aeaaca9052..81061987ac45 100644 --- a/arch/arm/mm/highmem.c +++ b/arch/arm/mm/highmem.c @@ -18,19 +18,20 @@ #include <asm/tlbflush.h> #include "mm.h" -pte_t *fixmap_page_table; - static inline void set_fixmap_pte(int idx, pte_t pte) { unsigned long vaddr = __fix_to_virt(idx); - set_pte_ext(fixmap_page_table + idx, pte, 0); + pte_t *ptep = pte_offset_kernel(pmd_off_k(vaddr), vaddr); + + set_pte_ext(ptep, pte, 0); local_flush_tlb_kernel_page(vaddr); } static inline pte_t get_fixmap_pte(unsigned long vaddr) { - unsigned long idx = __virt_to_fix(vaddr); - return *(fixmap_page_table + idx); + pte_t *ptep = pte_offset_kernel(pmd_off_k(vaddr), vaddr); + + return *ptep; } void *kmap(struct page *page) @@ -84,7 +85,7 @@ void *kmap_atomic(struct page *page) * With debugging enabled, kunmap_atomic forces that entry to 0. * Make sure it was indeed properly unmapped. */ - BUG_ON(!pte_none(*(fixmap_page_table + idx))); + BUG_ON(!pte_none(get_fixmap_pte(vaddr))); #endif /* * When debugging is off, kunmap_atomic leaves the previous mapping @@ -134,7 +135,7 @@ void *kmap_atomic_pfn(unsigned long pfn) idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(idx); #ifdef CONFIG_DEBUG_HIGHMEM - BUG_ON(!pte_none(*(fixmap_page_table + idx))); + BUG_ON(!pte_none(get_fixmap_pte(vaddr))); #endif set_fixmap_pte(idx, pfn_pte(pfn, kmap_prot)); diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 8348ed6b2efe..7fa0966cd15f 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1326,10 +1326,10 @@ static void __init kmap_init(void) #ifdef CONFIG_HIGHMEM pkmap_page_table = early_pte_alloc(pmd_off_k(PKMAP_BASE), PKMAP_BASE, _PAGE_KERNEL_TABLE); - - fixmap_page_table = early_pte_alloc(pmd_off_k(FIXADDR_START), - FIXADDR_START, _PAGE_KERNEL_TABLE); #endif + + early_pte_alloc(pmd_off_k(FIXADDR_START), FIXADDR_START, + _PAGE_KERNEL_TABLE); } static void __init map_lowmem(void) |