On 04/19/2010 01:46 PM, Peter Zijlstra wrote:
quoted text
> On Sat, 2010-04-17 at 21:48 +0300, Avi Kivity wrote:
>    
>>> After this patch is applied, I don't see a single warp in time during 5 days
>>> of execution, in any of the machines I saw them before.
>>>
>>>
>>>        
>> Please define a cpuid bit that makes this optional.  When we eventually
>> enable it in the future, it will allow a wider range of guests to enjoy it.
>>      
> Right, so on x86 we have:
>
> X86_FEATURE_CONSTANT_TSC, which only states that TSC is frequency
> independent, not that it doesn't stop in C states and similar fun stuff.
>
> X86_FEATURE_TSC_RELIABLE, which IIRC should indicate the TSC is constant
> and synced between cores.
>
>    

Sockets and boards too?  (IOW, how reliable is TSC_RELIABLE)?

-- 
error compiling committee.c: too many arguments to function

--
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/