[POWERPC] Clean up some linker and symbol usage
No comments. Straight forward patch.
Well, it is changing behaviour. In particular, klimit is not
necessarily the same as _end. It starts out initialized to &_end but
then gets advanced by some allocations very early in the boot IIRC.
It might be true by now that nothing reserves memory by advancing
klimit any more, but if that is true then the patch description needs
to mention that klimit is no longer used and this patch makes it no
longer usable. In fact in that case you should remove all mention of
klimit.
Also, this patch means that the region from PHYSICAL_START to
__pa(stext) is no longer reserved, which is another behaviour change
that deserves to be mentioned.
so I see iseries updating klimit.
[POWERPC] Update linker script to properly set physical addresses
You felt LOAD_OFFSET should be (CONFIG_PAGE_OFFSET -
CONFIG_PHYSICAL_START). I disagreed. We need to resolve.
I think you're right, actually, now, assuming that
CONFIG_PHYSICAL_START is the physical address of the start of the
kernel (actually, why don't you use that instead of __pa(stext) in
your patch [9/11]?).
I think I can just drop that change in the patch now that I look at
it. My previous plan had been to get ride of PHYSICAL_START but now
that we still have it I don't see any reason I need to change that
particular lmb reserve.
(i'll repost the full series with a minor bit of re-ordering).
- k
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