[LinuxBIOS] [PATCH] LBv3: fix printk format warnings

Segher Boessenkool segher at kernel.crashing.org
Fri Aug 10 22:20:39 CEST 2007


>>> On another note, we're experimenting, for various reasons, with
>>> -fPIC mode on v3, so as to support execute-in-place. I have a
>>> question I would like to toss at some willing experimenters. If
>>> anyone is interested I will ask in this forum. Let me know.
>>
>> This makes sense too. What are the drawbacks? :)
>
> One of four registers gets permanently reserved.

Two of eight instead of one of eight, or three of eight
instead of two of eight when you have a frame pointer
(but you shouldn't, it doesn't help anything).

> The code gets bigger and about 10% slower.

Yes.


Segher





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