On 12/22/06, Franck Bui-Huu <[EMAIL PROTECTED]> wrote:
Well thinking more about it, this wouldn't work for all cache types. For example, if your cache is not a direct maped one, this workaround won't work. So this is definitely not a portable solution.
From asking peterz on #mm, I think page_mkclean will do the right
thing and call something like flush_cache_page. I think that resolves the issue which I think you identified where the end symptom on archs with virtually tagged caches could be a line of pixels written by userspace through one PTE remain in-cache and therefore "undisplayed" when the kernel reads through another PTE that may fall on a different cacheline. Thanks, jayakumar - 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/
