On Wed, Jun 12, 2013 at 06:23:29PM +0100, Laura Abbott wrote: > +int set_memory_ro(unsigned long addr, int numpages) > +{ > + unsigned long start = addr; > + unsigned long size = PAGE_SIZE*numpages; > + unsigned end = start + size; > + > + apply_to_page_range(&init_mm, start, size, pte_set_ro, NULL); > + dsb(); > + flush_tlb_kernel_range(start, end); I think flush_tlb_kernel_range() already has a DSB. -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html