From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752093AbdK0LiC (ORCPT ); Mon, 27 Nov 2017 06:38:02 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:54615 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751350AbdK0LiB (ORCPT ); Mon, 27 Nov 2017 06:38:01 -0500 Date: Mon, 27 Nov 2017 12:37:52 +0100 (CET) From: Thomas Gleixner To: Ingo Molnar cc: Rik van Riel , Dave Hansen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, bp@suse.de, moritz.lipp@iaik.tugraz.at, daniel.gruss@iaik.tugraz.at, michael.schwarz@iaik.tugraz.at, richard.fellner@student.tugraz.at, luto@kernel.org, torvalds@linux-foundation.org, keescook@google.com, hughd@google.com, x86@kernel.org Subject: Re: [PATCH 04/30] x86, kaiser: disable global pages by default with KAISER In-Reply-To: <20171126144842.7ojxbo5wsu44w4ti@gmail.com> Message-ID: References: <20171110193058.BECA7D88@viggo.jf.intel.com> <20171110193105.02A90543@viggo.jf.intel.com> <1510688325.1080.1.camel@redhat.com> <20171126144842.7ojxbo5wsu44w4ti@gmail.com> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 26 Nov 2017, Ingo Molnar wrote: > * Disable global pages for anything using the default > * __PAGE_KERNEL* macros. > * > * PGE will still be enabled and _PAGE_GLOBAL may still be used carefully > * for a few selected kernel mappings which must be visible to userspace, > * when KAISER is enabled, like the entry/exit code and data. > */ > #ifdef CONFIG_KAISER > #define __PAGE_KERNEL_GLOBAL 0 > #else > #define __PAGE_KERNEL_GLOBAL _PAGE_GLOBAL > #endif > > ... and I've added your Reviewed-by tag which I assume now applies? Ideally we replace the whole patch with the __supported_pte_mask one which I posted as a delta patch. Thanks, tglx