On Fri, Jun 26, 2015 at 4:54 PM, Benjamin Herrenschmidt <b...@kernel.crashing.org> 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 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
