Benjamin Herrenschmidt wrote: > For PHYS_64BIT, I'm not 100% certain at this point what the best > approach it. It should clearly be fixed and hidden for real 64-bit. As > for the rest, should it be user selectable ?
I have been unable to convince our BSP teams that the minor performance improvement of a 32-bit kernel vs 36-bit is not worth the hassle. We ship a lot of lower-end e500 systems that will never have more than 2GB of memory. The P1022DS is an example. We ship 32-bit and 36-bit versions of U-Boot, the kernel, and the device tree. I recently added code to U-boot to detect if you have a mismatched U-Boot and device tree, because it is so easy to mess that up. I would like nothing more than to abandon 32-bit for all e500, but I don't see Freescale allowing that any time soon. -- Timur Tabi Linux kernel developer at Freescale _______________________________________________ Linuxppc-dev mailing list [email protected] https://lists.ozlabs.org/listinfo/linuxppc-dev
