On Tue, Feb 05, 2008 at 08:05:35AM +0100, Ingo Molnar wrote: > there are many GART drivers, and the method used depends on the GART > driver. The following GART drivers still use ioremap in one way or > another:
There is another issue I see in the recent pageattr changes, again in the GART driver context. GART drivers use map_page_into_agp() and unmap_page_from_agp() during runtime (and not just during load and unload of the driver module). In the recent pageattr changes, we seem to have dropped the concept of reverting to the large page(for the kernel identity mapping) while changing the attribute back to WB. In this GART driver context, over the time, potentially kernel identity mappings might be backed by small pages, if we don't revert to large page again during set_memory_wb() which gets called during unmap_page_from_agp() for a RAM page. And thus loosing the advantage of large page mapping for kernel identity mappings. thanks, suresh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/