linux-kernel - Re: [tip:x86/cpu] x86, msr: Add rd/wrmsr interfaces with preset registers

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Message-ID: <4AA13FCB.6050801@zytor.com>
Date:	Fri, 04 Sep 2009 09:26:51 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	mingo@...hat.com, linux-kernel@...r.kernel.org,
	petkovbb@...glemail.com, tglx@...utronix.de, petkovbb@...il.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/cpu] x86, msr: Add rd/wrmsr interfaces with preset	registers

On 09/04/2009 07:08 AM, Ingo Molnar wrote:
> * tip-bot for Borislav Petkov <petkovbb@...glemail.com> wrote:
> 
>> Commit-ID:  132ec92f3f70fe365c1f4b8d46e66cf8a2a16880
>> Gitweb:     http://git.kernel.org/tip/132ec92f3f70fe365c1f4b8d46e66cf8a2a16880
>> Author:     Borislav Petkov <petkovbb@...glemail.com>
>> AuthorDate: Mon, 31 Aug 2009 09:50:09 +0200
>> Committer:  H. Peter Anvin <hpa@...or.com>
>> CommitDate: Mon, 31 Aug 2009 15:14:26 -0700
>>
>> x86, msr: Add rd/wrmsr interfaces with preset registers
> 
> module exports are missing:
> 
>  ERROR: "native_wrmsr_safe_regs" [arch/x86/kernel/msr.ko] undefined!
>  ERROR: "native_rdmsr_safe_regs" [arch/x86/kernel/msr.ko] undefined!
> 

Uglier than that, msr-reg.o is defined as lib-y, which probably means
it's discarded completely if the kernel proper doesn't link it in.

It probably needs a new Kconfig variable or something... let me think
about it for a little bit.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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