On Fri, Jun 26, 2015 at 4:54 PM, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote: > On Fri, 2015-06-26 at 15:41 -0700, Luis R. Rodriguez wrote: > >> > It wasn't nullified for the main user at the time, the fb. And I >> > mentioned an IB adapter or two for which the code had been hand >> tuned. >> >> This still means there could be some affected drivers when used on >> powerpc, no? > > Yes. In fact what about things like ARM who also have barriers in their > writel() ? Won't they also break WC ? Not sure if they have that write-combine notion on their CPUs / interconnects. Russel, Stefano, does ARM have write-combining ? Luis -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
