Re: Early memory patch, revised

["H. Peter Anvin" <hpa@zytor.com>]

Eric W. Biederman wrote:
> 
> Thanks.  :)
> 
> Two little tweaks I can think of.
> 1) Can we reserve space between __bss_stop and _end for the page
>    tables and the bitmap of memory?   
>    
>    This should make it obvious that the early boot code is touching
>    that memory.
> 

The bitmap of memory, perhaps, I'll let wli speak to that one.  The page
tables shouldn't need to be fixed-sized like what you're proposing;
although the current patch doesn't make use of it, I'd like to in the
future, and this would make it impossible.

> 2) Can we export _end in setup.S so a bootloader can verify the
>    kernel + bss will fit in memory?

For what good?  Seriously... you're just pushing further into the kernel
the point where you will run completely out of memory during
initialization -- this case dynamic.

There is absolutely no use in trying to pointf*ck this.  Really.

	-hpa