Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751300AbbD2V7G (ORCPT ); Wed, 29 Apr 2015 17:59:06 -0400 Received: from mail-pa0-f45.google.com ([209.85.220.45]:36006 "EHLO mail-pa0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750737AbbD2V7E (ORCPT ); Wed, 29 Apr 2015 17:59:04 -0400 From: "Luis R. Rodriguez" To: mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com, bp@suse.de, plagnioj@jcrosoft.com, tomi.valkeinen@ti.com, daniel.vetter@intel.com, airlied@linux.ie Cc: dledford@redhat.com, awalls@md.metrocast.net, syrjala@sci.fi, luto@amacapital.net, mst@redhat.com, cocci@systeme.lip6.fr, linux-kernel@vger.kernel.org, "Luis R. Rodriguez" , Juergen Gross , Daniel Vetter , Dave Airlie , Bjorn Helgaas , x86@kernel.org Subject: [PATCH v4 5/8] arch/x86/mm/pat: export pat_enabled() Date: Wed, 29 Apr 2015 14:44:24 -0700 Message-Id: <1430343867-1001-6-git-send-email-mcgrof@do-not-panic.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430343867-1001-1-git-send-email-mcgrof@do-not-panic.com> References: <1430343867-1001-1-git-send-email-mcgrof@do-not-panic.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1540 Lines: 48 From: "Luis R. Rodriguez" 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. Cc: Andy Walls Cc: Doug Ledford Cc: Andy Lutomirski Cc: Ingo Molnar Cc: Thomas Gleixner Cc: Juergen Gross Cc: Daniel Vetter Cc: Dave Airlie Cc: Bjorn Helgaas Cc: Borislav Petkov Cc: Michael S. Tsirkin Cc: linux-kernel@vger.kernel.org Cc: x86@kernel.org Signed-off-by: Luis R. Rodriguez --- 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 b1f9a67..4524b78 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -45,6 +45,7 @@ bool pat_enabled(void) { return !!__pat_enabled; } +EXPORT_SYMBOL_GPL(pat_enabled); int pat_debug_enable; -- 2.3.2.209.gd67f9d5.dirty -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/