Benjamin Herrenschmidt wrote: > On Wed, 2006-05-24 at 10:04 +0200, Brice Goglin wrote: > > >> I am not sure what you mean. >> The only ppc64 with PCI-E that we have seen so far (a G5) couldn't do >> write combining according to Apple. >> > > That is not 100% true.... I don't know what apple had in mind. It also > depends in what slot you are. > > Do you have ways to measure the difference ? >
No, we don't have any PPC with PCIe running Linux. The only G5 PCIe that we have is running MacOSX. > Try doing __ioremap(mgp->iomem_base, mgp->board_span, _PAGE_NO_CACHE); > instead of using the normal ioremap for #ifdef powerpc and tell us if it > makes a difference. > I'll try it as soon as we get our G5 PCIe to run Linux. thanks, Brice - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
