Re: [PATCH] x86: put initial_pg_tables into .bss -v4

[H. Peter Anvin]

Yinghai Lu wrote:
> it just estimates initial_pg_tables size, and make _end a little bigger (1M), so boot loader could have idea of correct size of vmlinux aka the uncompressed size of in kernel.
>
> I assume brk patches could estimate the extra size that it needs too.

Yes, and I have made that point several times in this thread already.

I really like the brk interface because it's a clean, general-purpose 
allocator.

We can create a brk segment in vmlinux (and even bound the brk to catch 
overflows, instead of randomly failing) to advertise the presence of the 
brk.

	-hpa

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