Re: [PATCH] x86/microcode_intel_early.c: Get 32-bit physical addressby __pa_nodebug()

From: H. Peter Anvin
Date: Tue Mar 19 2013 - 20:06:16 EST

On 03/19/2013 04:48 PM, Yinghai Lu wrote:
> So do you mean we have to change all __pa_symbol before
> setup.c::setup_arch/find_low_pfn_range ?
> because only at that time max_low_pfn get setup.

No, I suspect the problem is that the debugging code fails to notice
that max_low_pfn isn't set up yet because it is in linear mode, and so
it reads the wrong address when it checks max_low_pfn.


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