[RFC] arm64: defconfig: enable 48-bit VA by default

[Stuart Yoder]

> -----Original Message-----
> From: Catalin Marinas [mailto:catalin.marinas at arm.com]
>
> For the time being, I would keep defconfig to 39-bit VA. If we start
> seeing systems with lots of RAM (over 256GB), we'll probably change the
> defconfig.

Somone who follows the "Principles" doc "correctly" will hit an issue
with the linear memory map after 32GB of RAM, right?   2 GB in 1st alias,
30 GB in 2nd alias, and rest at the 544 GB offset.

But, I guess it still remains to be seen who else will hit that
and when.

Thanks,
Stuart