On Thu, 10 Mar, at 03:36:24PM, Ard Biesheuvel wrote:

Thank you. I am perfectly happy exercising some more caution here,
though, considering that our past experiences involving reshuffling
stub code for x86 were not a huge success (and broke Linus's laptop,
among others')

I was very careful not to introduce cross-object data symbol
references (which were the culprit before), and I tested both i386 and
x86_64 to the extent feasible to me, but we'd need to confirm that
those things are still fully correct before queuing this.

I agree 100% with Ard. It's far too late in the development cycle to
be introducing cross-architecture changes, and in particular, changes
to the code driving the early boot console.

I haven't reviewed the patches yet, but this is all v4.7 material.