From patchwork Sun May 28 06:52:07 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Noam Camus X-Patchwork-Id: 767825 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wb9Y92pb8z9s7t for ; Sun, 28 May 2017 16:52:45 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="HQ6fexy3"; dkim-atps=neutral DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=W1L4Pt+Kw/zKWPtA5T/lALWAO95nAKBTO75Jf9Z91g4=; b=HQ6fexy3XAAH1Csw5aV9d/nX/u ego2sa0KQPxfCayN8u5gLQu2JdZbO8VbpxXyNFcFvl9xnavvwYQFcsWqCqAcoa8yCyribWWwZgCO9 MBQyKluswoy0974+Sjh4nqBuSjo8wFaWuKi9TMqASWO4KghmUPg5b8OsoGWOSbFQ6OHvxn0jdTUqb QGjkMkq2m1Uwcrlh2XhoB2dDp26oIB9To5y1qIAVxvekRHF1crVWI1cBLp0+/GDOWca+jq41vDK19 RZtjEJHX8siRmuGRC3SGg1yL651XGutNaVnaC72vA0s/7QMy3VPZ06csuIQcon14ItxE+c7VdPfVQ lFKWzAVw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dEs4B-0005jy-RJ; Sun, 28 May 2017 06:52:43 +0000 Received: from mail-il-dmz.mellanox.com ([193.47.165.129] helo=mellanox.co.il) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dEs45-0005cv-Ts for linux-snps-arc@lists.infradead.org; Sun, 28 May 2017 06:52:41 +0000 Received: from Internal Mail-Server by MTLPINE1 (envelope-from noamca@mellanox.com) with ESMTPS (AES256-SHA encrypted); 28 May 2017 09:52:10 +0300 Received: from nps20.mtl.labs.mlnx. (l-nps20.mtl.labs.mlnx [10.7.191.20]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id v4S6qAdp014805; Sun, 28 May 2017 09:52:10 +0300 From: Noam Camus To: linux-snps-arc@lists.infradead.org Subject: [PATCH v2 10/11] ARC: enable platform specific mem_service implementation Date: Sun, 28 May 2017 09:52:07 +0300 Message-Id: <1495954328-28736-11-git-send-email-noamca@mellanox.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1495954328-28736-1-git-send-email-noamca@mellanox.com> References: <1495954328-28736-1-git-send-email-noamca@mellanox.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170527_235238_435071_602E9E75 X-CRM114-Status: UNSURE ( 6.36 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Noam Camus , linux-kernel@vger.kernel.org MIME-Version: 1.0 Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Noam Camus For User Mode Memory Bus Error some platforms do not creat interrupt level 2 e.g. nps400 creates machine check exception. Turning mem_service into weak symbol allows each platform to override mem_service with its own implementation. Signed-off-by: Noam Camus --- arch/arc/kernel/entry-compact.S | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/arch/arc/kernel/entry-compact.S b/arch/arc/kernel/entry-compact.S index f285dbb..c5736d6 100644 --- a/arch/arc/kernel/entry-compact.S +++ b/arch/arc/kernel/entry-compact.S @@ -200,8 +200,9 @@ END(handle_interrupt_level2) ; --------------------------------------------- ; User Mode Memory Bus Error Interrupt Handler ; (Kernel mode memory errors handled via separate exception vectors) +; Platforms can override this weak version if needed ; --------------------------------------------- -ENTRY(mem_service) +WEAK(mem_service) INTERRUPT_PROLOGUE 2