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=-4.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 9833AC433E6 for ; Tue, 1 Sep 2020 13:19:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 4894120767 for ; Tue, 1 Sep 2020 13:19:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="n375t2zd"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="brOl6QMQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4894120767 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5MRh+g/xG01uwkhSqE3sDVp86C4dhH7qJByarfcEQvo=; b=n375t2zdMYhXnmk7GSDUNgnoO XTEoyuMiP8by606IaZkJ+CsCmQicmBJePF5A+GiWIlUU8rvv3Rr/VRFbi+no+D9hKRmoTpF+9H7EM kgwq9FCofIshK0aReEQ/OswwyAtA0ZNnMGW+7gpNTXj3JQPp0FzpwZPFfWJ8wiQ1UIO/7QF7rlEPj iEvsFWIIR3bv5KYutV3HwYqjq70A6SfbfVTYUcq9jfwueZzU2kvybWxCsN1DMYIpwY0+Amoz1Vupq bXvlNuH0okZWtq9waa2CXeVieMzCVaf5qBhLaE1/QTCph0s/QfCFE56jE6GUh79ax6Y+kAZXrgO7X 0SjBH2TiQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD6Ae-0001Gu-Nv; Tue, 01 Sep 2020 13:17:56 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD6Ad-0001G8-2M for linux-arm-kernel@merlin.infradead.org; Tue, 01 Sep 2020 13:17:55 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=9uW7HqUpxdzqV40dT/tamC4W2czgW8JE3IFLKMzq3Eo=; b=brOl6QMQuceus0POSkNwRKBOPc a4W5E4fFl7mLou9iwqiW83OOIPD5tloQdE1hL+3dHtn3KeDWt1WiK/amSqHISq0Ms6iR6KD+ijhX1 9pD/BauzyKChN3tT8YoEAhpVb3nFR1j1Xdj247X9Jk8/yn+AlnpZ+6CGwTAR4yUSM6qXC2Uh7KuFx 0jSgoTqBKhEA1eCqArL9i2lvKkEx6/NcG6KBFZZ6HvoaHI0oy+GXHXokOG0RopsEGzAzz7N3jz57I 3+HG3RbBSp9JJ9QZLfwWv95iRlJhKcuZrEEIAmLPBos5B/+SSld/kA0mMpTtIQmbe7o2hkcq3QQi8 1UYGo03w==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kD6AX-0000v5-Gv; Tue, 01 Sep 2020 13:17:49 +0000 Date: Tue, 1 Sep 2020 14:17:49 +0100 From: Matthew Wilcox To: Alex Shi Subject: Re: [PATCH v3 3/3] mm/armv6: work around armv6 cmpxchg support issue Message-ID: <20200901131749.GL14765@casper.infradead.org> References: <1598928612-68996-1-git-send-email-alex.shi@linux.alibaba.com> <1598928612-68996-3-git-send-email-alex.shi@linux.alibaba.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Hildenbrand , Anshuman Khandual , Russell King , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Baolin Wang , Andrew Morton , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Sep 01, 2020 at 02:30:51PM +0800, Alex Shi wrote: > seems there are couples archs can not do cmpxchg1 > So update the patch here. And it's easy to fix if more arch issue find here. > +/* > + * cmpxchg only support 32-bits operands on the following archs ARMv6, SPARC32 > + * sh2, XTENSA. > + */ > +#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_SH2) || \ > + defined(CONFIG_SPARC32) || defined(CONFIG_XTENSA) Looks like we need a HAVE_CMPXCHG_BYTE in Kconfig to parallel HAVE_CMPXCHG_DOUBLE. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel