linux-kernel - [PATCH] Simple brk allocator for very early allocations

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Date:	Fri, 27 Feb 2009 17:51:17 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] Simple brk allocator for very early allocations

This series adds a very simple brk-like allocator for very early
allocations.  By default it extends the bss segment, starting at _end.

This is used to allocate x86-32's initial head_32.S pagetable, removing
init_pg_table_start/end and pg0, replacing them with brk allocations.

dmi_alloc() is also changed to use extend_brk.

	J
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