> > -----Original Message----- > > From: Tabi Timur-B04825 > > Sent: Friday, February 24, 2012 10:46 AM > > To: Li Yang-R58472 > > Cc: Huang Changming-R66093; ga...@kernel.crashing.org; > > b...@kernel.crashing.org; Wood Scott-B07421; linuxppc-...@ozlabs.org > > Subject: Re: [PATCH] powerpc/85xx: allow CONFIG_PHYS_64BIT to be > > selectable > > > > 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 > > possible. Disabling PHYS_64BIT by default means that the default > > kernel will not work with a 36-bit DTS. If you attempt to boot such a > > kernel with a 36-bit DTS, there will be no text output. Most people > > will not know why it's not working. > > > > So the safest option is for PHYS_64BIT to be enabled by default. That > > way, the kernel will always work. > > Even though the user still need to know the addressing mode that u-boot > is using. It won't work if the addressing mode of u-boot and device tree > are different. > Yes, u-boot must has the same address mode with DTS, otherwise, we can't boot the kernel.
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