diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-02-04 14:51:49 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-02-04 14:51:49 +0000 |
| commit | 2fb20e2e35cd1455d022ab7a553d7f1663ffbdeb (patch) | |
| tree | 4b3bb0f76c15264fe7d4cced91127f3d96ff31f5 /arch/arm/mm | |
| parent | 9cb543124a2d31af42ce61a4c30765ecc8e5f1fa (diff) | |
| parent | 5b91ab0abc957145c3ff6be03eb9a3901797019f (diff) | |
Merge branch 'for-rmk/broadcast' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into devel-stable
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 18 | ||||
| -rw-r--r-- | arch/arm/mm/mmu.c | 2 |
2 files changed, 11 insertions, 9 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 6b2fb87c869..076c26d4386 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -774,25 +774,27 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, void (*op)(const void *, size_t, int)) { + unsigned long pfn; + size_t left = size; + + pfn = page_to_pfn(page) + offset / PAGE_SIZE; + offset %= PAGE_SIZE; + /* * A single sg entry may refer to multiple physically contiguous * pages. But we still need to process highmem pages individually. * If highmem is not configured then the bulk of this loop gets * optimized out. */ - size_t left = size; do { size_t len = left; void *vaddr; + page = pfn_to_page(pfn); + if (PageHighMem(page)) { - if (len + offset > PAGE_SIZE) { - if (offset >= PAGE_SIZE) { - page += offset / PAGE_SIZE; - offset %= PAGE_SIZE; - } + if (len + offset > PAGE_SIZE) len = PAGE_SIZE - offset; - } vaddr = kmap_high_get(page); if (vaddr) { vaddr += offset; @@ -809,7 +811,7 @@ static void dma_cache_maint_page(struct page *page, unsigned long offset, op(vaddr, len, dir); } offset = 0; - page++; + pfn++; left -= len; } while (left); } diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 1f51d712b55..8fcf8bd3ee4 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -298,7 +298,7 @@ static struct mem_type mem_types[] = { }, [MT_MEMORY_SO] = { .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | - L_PTE_MT_UNCACHED, + L_PTE_MT_UNCACHED | L_PTE_XN, .prot_l1 = PMD_TYPE_TABLE, .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_S | PMD_SECT_UNCACHED | PMD_SECT_XN, |