From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61BDFC433FF for ; Fri, 2 Aug 2019 04:21:16 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8AF342073D for ; Fri, 2 Aug 2019 04:21:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8AF342073D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=informatik.wtf Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 460DVx1vyjzDqf9 for ; Fri, 2 Aug 2019 14:21:13 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 460DT110NWzDqkV for ; Fri, 2 Aug 2019 14:19:33 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=informatik.wtf Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) by bilbo.ozlabs.org (Postfix) with ESMTP id 460DT024pBz8t7p for ; Fri, 2 Aug 2019 14:19:32 +1000 (AEST) Received: by ozlabs.org (Postfix) id 460DT01Yh0z9sBF; Fri, 2 Aug 2019 14:19:32 +1000 (AEST) Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=informatik.wtf (client-ip=131.153.2.44; helo=h3.fbrelay.privateemail.com; envelope-from=cmr@informatik.wtf; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=informatik.wtf Received: from h3.fbrelay.privateemail.com (h3.fbrelay.privateemail.com [131.153.2.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 460DSz2r7Xz9s3Z for ; Fri, 2 Aug 2019 14:19:30 +1000 (AEST) Received: from MTA-06-3.privateemail.com (mta-06.privateemail.com [68.65.122.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by h3.fbrelay.privateemail.com (Postfix) with ESMTPS id 985678162B for ; Fri, 2 Aug 2019 00:19:26 -0400 (EDT) Received: from MTA-06.privateemail.com (localhost [127.0.0.1]) by MTA-06.privateemail.com (Postfix) with ESMTP id 3921960039; Fri, 2 Aug 2019 00:19:19 -0400 (EDT) Received: from wrwlf0000.attlocal.net (unknown [10.20.151.234]) by MTA-06.privateemail.com (Postfix) with ESMTPA id C464A60055; Fri, 2 Aug 2019 04:19:18 +0000 (UTC) From: "Christopher M. Riedl" To: linuxppc-dev@ozlabs.org Subject: [PATCH v2 0/3] Fix oops in shared-processor spinlocks Date: Thu, 1 Aug 2019 23:22:30 -0500 Message-Id: <20190802042233.20835-1-cmr@informatik.wtf> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Christopher M. Riedl" , ajd@linux.ibm.com, bauerman@linux.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Fixes an oops when calling the shared-processor spinlock implementation from a non-SP LPAR. Also take this opportunity to refactor SHARED_PROCESSOR a bit. Reference: https://github.com/linuxppc/issues/issues/229 Changes since v1: - Improve comment wording to make it clear why the BOOK3S #ifdef is required in is_shared_processor() in spinlock.h - Replace empty #define of splpar_*_yield() with actual functions with empty bodies. Christopher M. Riedl (3): powerpc/spinlocks: Refactor SHARED_PROCESSOR powerpc/spinlocks: Rename SPLPAR-only spinlocks powerpc/spinlocks: Fix oops in shared-processor spinlocks arch/powerpc/include/asm/spinlock.h | 62 +++++++++++++++++++++-------- arch/powerpc/lib/locks.c | 6 +-- 2 files changed, 48 insertions(+), 20 deletions(-) -- 2.22.0