From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753354AbbE0OWa (ORCPT ); Wed, 27 May 2015 10:22:30 -0400 Received: from terminus.zytor.com ([198.137.202.10]:36310 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752871AbbE0OW2 (ORCPT ); Wed, 27 May 2015 10:22:28 -0400 Date: Wed, 27 May 2015 07:21:15 -0700 From: "tip-bot for Luis R. Rodriguez" Message-ID: Cc: mcgrof@suse.com, torvalds@linux-foundation.org, peterz@infradead.org, tglx@linutronix.de, mst@redhat.com, awalls@md.metrocast.net, brgerst@gmail.com, jgross@suse.com, hpa@zytor.com, linux-kernel@vger.kernel.org, dvlasenk@redhat.com, dledford@redhat.com, bp@alien8.de, bp@suse.de, luto@amacapital.net, daniel.vetter@ffwll.ch, airlied@redhat.com, bhelgaas@google.com, mingo@kernel.org Reply-To: mcgrof@suse.com, peterz@infradead.org, torvalds@linux-foundation.org, hpa@zytor.com, jgross@suse.com, linux-kernel@vger.kernel.org, mst@redhat.com, brgerst@gmail.com, awalls@md.metrocast.net, tglx@linutronix.de, bhelgaas@google.com, mingo@kernel.org, airlied@redhat.com, daniel.vetter@ffwll.ch, dvlasenk@redhat.com, dledford@redhat.com, luto@amacapital.net, bp@suse.de, bp@alien8.de In-Reply-To: <1432628901-18044-14-git-send-email-bp@alien8.de> References: <1430425520-22275-4-git-send-email-mcgrof@do-not-panic.com> <1432628901-18044-14-git-send-email-bp@alien8.de> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/mm] x86/mm/pat: Export pat_enabled() Git-Commit-ID: fbe7193aa4787f27c84216d130ab877efc310d57 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: fbe7193aa4787f27c84216d130ab877efc310d57 Gitweb: http://git.kernel.org/tip/fbe7193aa4787f27c84216d130ab877efc310d57 Author: Luis R. Rodriguez AuthorDate: Tue, 26 May 2015 10:28:16 +0200 Committer: Ingo Molnar CommitDate: Wed, 27 May 2015 14:41:02 +0200 x86/mm/pat: Export pat_enabled() Two Linux device drivers cannot work with PAT and the work required to make them work is significant. There is not enough motivation to convert these drivers over to use PAT properly, the compromise reached is to let drivers that cannot be ported to PAT check if PAT was enabled and if so fail on probe with a recommendation to boot with the "nopat" kernel parameter. Signed-off-by: Luis R. Rodriguez Signed-off-by: Borislav Petkov Cc: Andy Lutomirski Cc: Andy Walls Cc: Bjorn Helgaas Cc: Borislav Petkov Cc: Brian Gerst Cc: Daniel Vetter Cc: Dave Airlie Cc: Denys Vlasenko Cc: Doug Ledford Cc: H. Peter Anvin Cc: Juergen Gross Cc: Linus Torvalds Cc: Michael S. Tsirkin Cc: Peter Zijlstra Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1430425520-22275-4-git-send-email-mcgrof@do-not-panic.com Link: http://lkml.kernel.org/r/1432628901-18044-14-git-send-email-bp@alien8.de Signed-off-by: Ingo Molnar --- arch/x86/mm/pat.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 484dce7..a1c9654 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -55,6 +55,7 @@ bool pat_enabled(void) { return !!__pat_enabled; } +EXPORT_SYMBOL_GPL(pat_enabled); int pat_debug_enable;