Re: Possible Bootloader Optimization in inflate (get rid of unnecessary32k Window)

[H. Peter Anvin]

Coywolf Qi Hunt wrote:
> > What would the optimization be worth?
> > * A faster uncompressing of the kernel, since a total 1-time memcopy of the
> > whole kernel is been optimized away.
> > * I'm not sure about the size, the memory or disk footprint. If the 32k static
> > (!) memory array in compressed/misc.c, I don't know if it safes 32k running
> > memory, or 32k on-disk size. Since I don't know the indepth working of these 
>
> Neither for saving running memory (discarded), nor on-disk size
> (window[WSIZE] resides in BSS).

I've actually implemented this for another application (where BSS was at 
a premium.)  It even has some nice benefits for code size if you do it 
right.

It indeed would avoid a cache-to-memory copy, but that's not really a 
huge deal, which is why noone has worried too much about it.

	-hpa
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