Hi Konrad, On Sat, Jun 30, 2012 at 12:47:18AM -0400, Konrad Rzeszutek Wilk wrote: > On Thu, Jun 28, 2012 at 02:55:44PM +0200, Andrea Arcangeli wrote: > > Xen has taken over the last reserved bit available for the pagetables > > Some time ago when I saw this patch I asked about it (if there is way > to actually stop using this bit) and you mentioned it is not the last > bit available for pagemaps. Perhaps you should alter the comment > in this description? As far as I can tell the comment is correct, it is the last bit available. Simply I don't need to use it anymore. There are 3 reserved bits, one is used by Xen, the second is used by SPECIAL the third is used by kmemcheck. > > which is set through ioremap, this documents it and makes the code > > It actually is through ioremap, gntdev (to map another guest memory), > and on pfns which fall in E820 on the non-RAM and gap sections. Well I dropped this patch, there's too much other important work to do, this is only a documentation improvement and a cleanup and I don't need it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>