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From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: 1G huge pages in Linux guest VM
Date: Mon, 14 May 2012 23:53:19 -0300
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To: Sriram Murthy <sriramsm@yahoo.com>
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On Thu, May 10, 2012 at 08:53:33AM -0700, Sriram Murthy wrote:
> If I have a mix of 2M and 1G pages on the host, how will I be able to pass the same to the guest?. Does KVM and Libvirtd allow multiple -mem-path options?. 
> Also, where in the source can I find more info about hugepage support in KVM?
> Thanks and regards,
> Sriram

You can't, only a single large page size is supported for guest RAM.