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SubjectRe: [PATCH] OLPC: Add XO-1 suspend/resume support
On 10/19/2010 03:01 PM, Daniel Drake wrote:
> Add code needed for basic suspend/resume of the XO-1 laptop.
>
> swsusp_pg_dir needs to be exposed as it is used by the assembly
> code run in the wakeup path.
>

Okay... this is Yet Another Reason why we need to unify all the bloody
trampoline page tables.

What it comes down to is that there are several users which need a 1:1
mapped pagetable and a chunk of memory < 1 MiB, and they should all be
combined and linked together, and share a single pagetable set that
sticks around.

Borislav has already been doing some of this work:

[PATCH] x86-32, mm: Add an initial page table for core bootstrapping

I thought that patch was already in -tip, but it looks like it's not...
Borislav/Joerg... was there a newer patch or did we just miss the final
version? I remember we talked about this at some length, but it looks
like I dropped the ball (I was on vacation when the above message was
posted.)

-hpa


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