Message-ID: <4901224C.6060003@zytor.com>
Date: Thu, 23 Oct 2008 18:18:04 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: akataria@vmware.com
CC: Andi Kleen <andi@firstfloor.org>, Ingo Molnar <mingo@elte.hu>,
       LKML <linux-kernel@vger.kernel.org>,
       the arch/x86 maintainers <x86@kernel.org>,
       Daniel Hecht <dhecht@vmware.com>
Subject: Re: [PATCH] Skip tsc synchronization checks if CONSTANT_TSC bit is
 set.
References: <20081021181536.GI12825@one.firstfloor.org>	 <1224616236.6161.60.camel@alok-dev1>	 <20081021192746.GJ12825@one.firstfloor.org>	 <1224703427.13953.8.camel@alok-dev1>	 <20081022195845.GP12825@one.firstfloor.org>	 <1224712846.13953.37.camel@alok-dev1>	 <20081022221316.GW12825@one.firstfloor.org>	 <1224713518.13953.46.camel@alok-dev1>	 <20081022225409.GB27492@one.firstfloor.org>	 <1224728478.13953.79.camel@alok-dev1>	 <20081023081052.GI27492@one.firstfloor.org>	 <1224805162.21776.45.camel@alok-dev1>  <49010D1E.8070400@zytor.com> <1224810764.21776.74.camel@alok-dev1>
In-Reply-To: <1224810764.21776.74.camel@alok-dev1>
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Alok Kataria wrote:
> 
> I agree with the synthetic cpu feature thing.
> Do you think i should use one of the existing word like the word 3 which
> is for synthesized feature bits ? Or is it better to define a new
> virtualization specific word ?
> 

I don't see any point in using anything other than word 3 until it fills up.

What we want to end up with is cleanly separated: hypervisor detection, 
hypervisor features/workaround settings, and the implementation of those.

	-hpa
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