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Date: Mon, 01 May 2006 12:13:13 -0700
From: Maxim Sobolev <sobomax@FreeBSD.org>
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To: John Baldwin <jhb@FreeBSD.org>
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Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org,
	Nate Lawson <nate@root.org>
Subject: Re: cvs commit: src/sys/dev/sk if_sk.c if_skreg.h
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John Baldwin wrote:

>> BTW, can you check the following URL, it's the changes intel has made 
>> to ia32 manual after releasing Core Duo. Maybe you can spot something 
>> there. There are some lapic-related changes.
>>
>> http://download.intel.com/design/Pentium4/specupdt/25204616.pdf
> 
> None of the APIC-related changes affect us.  We always access APIC
> registers using 32-bit loads and stores for example.

I see, do you have any other ideas why it doesn't work on FreeBSD, while 
works OOB on Linux 2.6 (reportedly) and definitely on Windows XP SP2? 
Anything specific in our way of lapic/SMP handling?

BTW, I have noticed that we don't mark lapic page as noncacheable, which 
seemingly required by the spec. I have made small change (3 lines), but 
it doesn't help either.

-Maxim
P.S. I will bring the laptop to BSDCan so that I can let you or anybody 
else play with it if it helps to fix the problem.