From: Fenghua Yu <fenghua.yu@intel.com>
Date: Tue, 19 Mar 2013 15:04:44 +0000 (-0700)
Subject: x86-32, microcode_intel_early: Fix crash with CONFIG_DEBUG_VIRTUAL
X-Git-Tag: v3.9-rc5~36^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c83a9d5e425d4678b05ca058fec6254f18601474;p=pandora-kernel.git

x86-32, microcode_intel_early: Fix crash with CONFIG_DEBUG_VIRTUAL

In 32-bit, __pa_symbol() in CONFIG_DEBUG_VIRTUAL accesses kernel data
(e.g.  max_low_pfn) that not only hasn't been setup yet in such early
boot phase, but since we are in linear mode, cannot even be detected
as uninitialized.

Thus, use __pa_nodebug() rather than __pa_symbol() to get a global
symbol's physical address.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1363705484-27645-1-git-send-email-fenghua.yu@intel.com
Reported-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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