[RFC PATCH] ARM: add fixmap based earlycon support

[Ard Biesheuvel]

On 1 May 2015 at 18:18, Russell King - ARM Linux <linux at arm.linux.org.uk> wrote:
> On Wed, Apr 29, 2015 at 03:51:48PM +0200, Ard Biesheuvel wrote:
>> This adds support for fixmap based earlycon by moving the fixmap
>> initialization to an earlier stage and introducing the Kconfig symbol
>> that wires up the existing code.
>
> I don't see the patches for this fixmap based earlycon.  What's the
> status of those, and how are they getting into mainline?
>

They are already /in/ mainline. This single patch is all that is
required to wire it up for ARM.

However, I did notice after sending this that another implementation
had been proposed already:
http://lkml.iu.edu/hypermail/linux/kernel/1412.3/00855.html

I am not sure which one is more correct, but the general idea is the
same, i.e., to allocate the fixmap PTEs from bss rather than the heap.