From: Yinghai Lu <yinghai@kernel.org>
Date: Tue, 28 Jan 2014 01:06:50 +0000 (-0800)
Subject: x86: revert wrong memblock current limit setting
X-Git-Tag: v3.14-rc1~79^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ce7a8697cb795fda6bdf082c14743b4bcd551c3;p=pandora-kernel.git

x86: revert wrong memblock current limit setting

Dave reported big numa system booting is broken.

It turns out that commit 5b6e529521d3 ("x86: memblock: set current limit
to max low memory address") sets the limit to low wrongly.

max_low_pfn_mapped is different from max_pfn_mapped.
max_low_pfn_mapped is always under 4G.

That will memblock_alloc_nid all go under 4G.

Revert 5b6e529521d3 to fix a no-boot regression which was triggered by
457ff1de2d24 ("lib/swiotlb.c: use memblock apis for early memory
allocations").

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reported-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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