Message-ID: <45468620.5060805@vmware.com>
Date: Mon, 30 Oct 2006 15:09:20 -0800
From: Zachary Amsden <zach@vmware.com>
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To: Andi Kleen <ak@muc.de>
Cc: Andi Kleen <ak@suse.de>, virtualization@lists.osdl.org,
       Andrew Morton <akpm@osdl.org>, Chris Wright <chrisw@sous-sol.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/5] Skip timer works.patch
References: <200610200009.k9K09MrS027558@zach-dev.vmware.com> <20061027145650.GA37582@muc.de> <45425976.3090508@vmware.com> <200610271416.12548.ak@suse.de> <4546669F.8020706@vmware.com> <20061030225016.GA95732@muc.de>
In-Reply-To: <20061030225016.GA95732@muc.de>
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Andi Kleen wrote:
> On Mon, Oct 30, 2006 at 12:54:55PM -0800, Zachary Amsden wrote:
>   
>> Andi Kleen wrote:
>>     
>>> no_timer_check. But it's only there on x86-64 in mainline - although there
>>> were some patches to add it to i386 too.
>>>  
>>>       
>> I can rename to match the x86-64 name.
>>     
>
> I will do that in my tree.
>
>   
>>>> That is what this patch is building towards, but the boot option is
>>>> "free", so why not?  In the meantime, it helps non-paravirt kernels
>>>> booted in a VM.
>>>>    
>>>>         
>>> Hmm, you meant they paniced before?  If they just fail a few tests
>>> that is not particularly worrying (real hardware does that often too)
>>>  
>>>       
>> Yes, they sometimes fail to boot, and the failure message used to ask us 
>> to pester mingo.
>>     
>
> I still think we should figure that out automatically. Letting
> the Hypervisor pass magic boot options seems somehow unclean.
>
> But i suppose it will only work for the paravirtualized case,
> not for the case of kernel running "native" under a hypervisor
> I suppose? Or does that one not panic?
>   

That is the one that can panic, for now.  Fixing the paravirtualized 
case is easy, but we can't assume paravirtualization just yet.

Zach


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