diff options
Diffstat (limited to 'arch/powerpc/mm/mem.c')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index ad299e72ec30..617c2777926f 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -121,7 +121,7 @@ static void flush_dcache_range_chunked(unsigned long start, unsigned long stop, unsigned long i; for (i = start; i < stop; i += chunk) { - flush_dcache_range(i, min(stop, start + chunk)); + flush_dcache_range(i, min(stop, i + chunk)); cond_resched(); } } @@ -289,6 +289,14 @@ void __init mem_init(void) BUILD_BUG_ON(MMU_PAGE_COUNT > 16); #ifdef CONFIG_SWIOTLB + /* + * Some platforms (e.g. 85xx) limit DMA-able memory way below + * 4G. We force memblock to bottom-up mode to ensure that the + * memory allocated in swiotlb_init() is DMA-able. + * As it's the last memblock allocation, no need to reset it + * back to to-down. + */ + memblock_set_bottom_up(true); swiotlb_init(0); #endif |