[PATCH] powerpc/85xx: allow CONFIG_PHYS_64BIT to be selectable

[Tabi Timur-B04825]

Li Yang-R58472 wrote:

> The mpc85xx_defconfig does include silicons with e500v1 core which
> doesn't have the 36-bit support.  Won't enabling 36-bit support by
> default break the support for them?

No.  The kernel will detect at runtime that that it's an e500v1 core and 
it won't try to create 36-bit TLBs. (e.g. it won't write to MAS7).

Please remember that the Kconfig for the P1022DS already forced PHYS_64BIT 
for all mpc85xx platforms.  All we're doing is making it possible to 
deselect PHYS_64BIT.

-- 
Timur Tabi
Linux kernel developer at Freescale