From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Fwd: do_mmu_update Date: Fri, 16 Jan 2009 11:18:56 -0800 Message-ID: <4970DDA0.9020300@goop.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Furquan Shaikh Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Furquan Shaikh wrote: > > > Can you please explain a bit more about it? Isnt this the default for > the switch case where matches with any of the l1, l2, l3 are not > found. what does this default of /not_a_pt /signify You can use do_mmu_update to write a pte entry in a page which is not (yet) considered to be a pagetable. J