From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@redhat.com>
Subject: Re: [PATCH v3 7/8] Move IO APIC to its own lock.
Date: Thu, 13 Aug 2009 13:44:06 +0300
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Cc: Marcelo Tosatti <mtosatti@redhat.com>, kvm@vger.kernel.org,
	"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Gleb Natapov <gleb@redhat.com>
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On 08/13/2009 01:09 PM, Gleb Natapov wrote:
>> There's also srcu.
>>
>>      
> What are the disadvantages? There should be some, otherwise why not use
> it all the time.
>    

I think it incurs an atomic op in the read path, but not much overhead 
otherwise.  Paul?

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