From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753347AbcFJW2T (ORCPT ); Fri, 10 Jun 2016 18:28:19 -0400 Received: from ale.deltatee.com ([207.54.116.67]:55799 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751724AbcFJW2R (ORCPT ); Fri, 10 Jun 2016 18:28:17 -0400 To: "Rafael J. Wysocki" , Kees Cook References: <573DF82D.50006@deltatee.com> <34107887.ATgOLutrT1@vostro.rjw.lan> <6452365.7hjtWaBW7Y@vostro.rjw.lan> Cc: "Rafael J. Wysocki" , Stephen Smalley , Ingo Molnar , Ingo Molnar , the arch/x86 maintainers , "linux-pm@vger.kernel.org" , Linux Kernel Mailing List , Andy Lutomirski , Borislav Petkov , Denys Vlasenko , Brian Gerst From: Logan Gunthorpe Message-ID: <575B3EF1.3060507@deltatee.com> Date: Fri, 10 Jun 2016 16:28:01 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.8.0 MIME-Version: 1.0 In-Reply-To: <6452365.7hjtWaBW7Y@vostro.rjw.lan> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 172.16.1.111 X-SA-Exim-Rcpt-To: brgerst@gmail.com, dvlasenk@redhat.com, bp@alien8.de, luto@kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, x86@kernel.org, mingo@redhat.com, mingo@kernel.org, sds@tycho.nsa.gov, rafael@kernel.org, keescook@chromium.org, rjw@rjwysocki.net X-SA-Exim-Mail-From: logang@deltatee.com Subject: Re: PROBLEM: Resume form hibernate broken by setting NX on gap X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/06/16 04:29 PM, Rafael J. Wysocki wrote: > OK, I have a theory, but I need a bit of help. > > This may be a dumb question, but I don't quite remember the answer readily. > > Given a physical address, how do I get the corresponding virtual one under > the kernel identity mapping? Is that not just 'phys_to_virt(x)'?? Logan