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

From: Tabi Timur-B04825 <[email-masked]>
Date: Fri, 24 Feb 2012 02:45:36 +0000

Li Yang-R58472 wrote:

> I agree with Changming that we shouldn't setting PHYS_64BIT by default.

The default kernel should always be the compatible with as much as=20
possible.  Disabling PHYS_64BIT by default means that the default kernel=20
will not work with a 36-bit DTS.  If you attempt to boot such a kernel=20
with a 36-bit DTS, there will be no text output.  Most people will not=20
know why it's not working.

So the safest option is for PHYS_64BIT to be enabled by default.  That=20
way, the kernel will always work.

--=20
Timur Tabi
Linux kernel developer at Freescale=