From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964924AbbKEVdN (ORCPT ); Thu, 5 Nov 2015 16:33:13 -0500 Received: from mail-ig0-f174.google.com ([209.85.213.174]:38507 "EHLO mail-ig0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755548AbbKEVdL (ORCPT ); Thu, 5 Nov 2015 16:33:11 -0500 MIME-Version: 1.0 In-Reply-To: References: <20151103111649.GA3477@gmail.com> <20151104233907.GA25925@codemonkey.org.uk> <20151105021710.GA22941@codemonkey.org.uk> Date: Thu, 5 Nov 2015 13:33:10 -0800 X-Google-Sender-Auth: BAi-fJ2AR8Cmz4TIQDSRpbpnIsc Message-ID: Subject: Re: [GIT PULL] x86/mm changes for v4.4 From: Linus Torvalds To: Dave Jones , Linus Torvalds , Ingo Molnar , Linux Kernel Mailing List , Thomas Gleixner , "H. Peter Anvin" , Borislav Petkov , Andrew Morton , Andy Lutomirski , Denys Vlasenko , Stephen Smalley Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 5, 2015 at 1:27 PM, Linus Torvalds wrote: > > I suspect CONFIG_EFI_PGT_DUMP instead. > > Anyway, as it stands now, I think the CONFIG_DEBUG_WX option should > not default to 'y' unless it is made more useful if it actually > triggers. Ingo? Actually, I guess I should have cc'd Steven Smalley too, since he's the author. Steven, the problem is that without other debug options, the CONFIG_DEBUG_WX option doesn't seem useful. It shows a problem, but it doesn't actually show any information about where that issue comes from or any other details to even *guess* at what is going on. And if this turns out to be due to EFI wanting those permissions, what should we do? People have talked about running the EFI callbacks in their own private page table setup, which sounds like the right idea, but until that actually *happens*.... Linus