linux-kernel - Re: [PATCH 2/4] x86, CPU: Fix show

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Message-ID: <20120601225030.GC30418@aftab.osrc.amd.com>
Date:	Sat, 2 Jun 2012 00:50:30 +0200
From:	Borislav Petkov <borislav.petkov@....com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Borislav Petkov <bp@...64.org>, "H. Peter Anvin" <hpa@...or.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Jacob Shin <jacob.shin@....com>,
	Andre Przywara <andre.przywara@....com>, <jeremy@...p.org>,
	<xen-devel@...ts.xensource.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jan Beulich <JBeulich@...e.com>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 2/4] x86, CPU: Fix show_msr MSR accessing function

On Fri, Jun 01, 2012 at 11:22:03AM -0700, Yinghai Lu wrote:
> can you double check if the range will need special passcode ?
> 
>         { 0x00000000, 0x00000418},
>         { 0xc0000000, 0xc000040b},
>         { 0xc0010000, 0xc0010142},
>         { 0xc0011000, 0xc001103b},
> 
> passcode should be
>        gprs[7] = 0x9c5a203a;

This currently reads the MSRs it can read without the passcode. There's
no reason I'm aware of to access the other MSRs.

-- 
Regards/Gruss,
Boris.

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