From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mick Jordan Subject: Re: Design question for PV superpage support Date: Mon, 02 Mar 2009 08:43:02 -0800 Message-ID: <49AC0C96.7070608@Sun.COM> References: <200903020754.23534.dcm@mccr.org> Reply-To: Mick.Jordan@sun.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7BIT Return-path: In-reply-to: <200903020754.23534.dcm@mccr.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Dave McCracken Cc: Xen Developers List List-Id: xen-devel@lists.xenproject.org On 03/02/09 05:54, Dave McCracken wrote: > The solution I am working on for how to support Linux hugepages (Xen > superpages) involves creating domains made up entirely of superpages. I can > create a working domain with superpages and am in the process of supporting > it in save/restore. > > This wouldn't work too well for me in the case of thread stacks because we need to map out parts of the stack and, although we want large virtual stacks, we don't want do dedicate that much physical memory. Is it really difficult to support mixed pages sizes in the general case, e.g., save/restore etc.? Mick