linux-kernel - Re: [PATCH 1/3] x86: Move msr accesses out of line

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Message-ID: <20150225183454.GA31672@pd.tnic>
Date:	Wed, 25 Feb 2015 19:34:55 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Andi Kleen <ak@...ux.intel.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] x86: Move msr accesses out of line

On Wed, Feb 25, 2015 at 07:20:32PM +0100, Andi Kleen wrote:
> Also we do quite a few RDMSRs, which are not necessarily
> serializing.

RDMSR is not serializing. Not even WRMSR when to certain ranges, see
section 8.3 in the SDM 3A.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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