Am Freitag, 19. Februar 2010 18:36:51 schrieb Catalin Marinas: > If a page is already mapped in user space, flush_dcache_page() on ARM > does the flushing rather than deferring it to update_mmu_cache(). The > PIO HCD drivers, however, don't call flush_dcache_page(). Is it possible > that the HCD could transfer data into a page cache page already mapped > in user space? My understanding is that the scenario above is possible. Yes, video drivers do that. Regards Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
