diff options
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/dma-default.c | 23 | ||||
| -rw-r--r-- | arch/mips/mm/mmap.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/pgtable-32.c | 6 |
3 files changed, 22 insertions, 9 deletions
diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index fe8df14b6169..e08598c70b3e 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -68,12 +68,25 @@ static inline struct page *dma_addr_to_page(struct device *dev, * systems and only the R10000 and R12000 are used in such systems, the * SGI IP28 Indigo² rsp. SGI IP32 aka O2. */ -static inline int cpu_needs_post_dma_flush(struct device *dev) +static inline bool cpu_needs_post_dma_flush(struct device *dev) { - return !plat_device_is_coherent(dev) && - (boot_cpu_type() == CPU_R10000 || - boot_cpu_type() == CPU_R12000 || - boot_cpu_type() == CPU_BMIPS5000); + if (plat_device_is_coherent(dev)) + return false; + + switch (boot_cpu_type()) { + case CPU_R10000: + case CPU_R12000: + case CPU_BMIPS5000: + return true; + + default: + /* + * Presence of MAARs suggests that the CPU supports + * speculatively prefetching data, and therefore requires + * the post-DMA flush/invalidate. + */ + return cpu_has_maar; + } } static gfp_t massage_gfp_flags(const struct device *dev, gfp_t gfp) diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c index 64dd8bdd92c3..28adeabe851f 100644 --- a/arch/mips/mm/mmap.c +++ b/arch/mips/mm/mmap.c @@ -93,7 +93,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp, vma = find_vma(mm, addr); if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + (!vma || addr + len <= vm_start_gap(vma))) return addr; } diff --git a/arch/mips/mm/pgtable-32.c b/arch/mips/mm/pgtable-32.c index adc6911ba748..b19a3c506b1e 100644 --- a/arch/mips/mm/pgtable-32.c +++ b/arch/mips/mm/pgtable-32.c @@ -51,15 +51,15 @@ void __init pagetable_init(void) /* * Fixed mappings: */ - vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; - fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base); + vaddr = __fix_to_virt(__end_of_fixed_addresses - 1); + fixrange_init(vaddr & PMD_MASK, vaddr + FIXADDR_SIZE, pgd_base); #ifdef CONFIG_HIGHMEM /* * Permanent kmaps: */ vaddr = PKMAP_BASE; - fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base); + fixrange_init(vaddr & PMD_MASK, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base); pgd = swapper_pg_dir + __pgd_offset(vaddr); pud = pud_offset(pgd, vaddr); |