From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH] drm/amdgpu: replace readq/writeq with atomic64 operations Date: Wed, 7 Aug 2019 00:08:34 -0700 Message-ID: <20190807070834.GA24792@infradead.org> References: <20190807025640.682-1-tao.zhou1@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20190807025640.682-1-tao.zhou1@amd.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Tao Zhou Cc: linux-arm-kernel@lists.infradead.org, kernel-build-reports@lists.linaro.org, amd-gfx@lists.freedesktop.org, broonie@kernel.org, linux-next@vger.kernel.org, alexander.deucher@amd.com, akpm@linux-foundation.org, christian.koenig@amd.com, dennis.li@amd.com, hawking.zhang@amd.com List-Id: amd-gfx.lists.freedesktop.org On Wed, Aug 07, 2019 at 10:56:40AM +0800, Tao Zhou wrote: > readq/writeq are not supported on all architectures NAK. You must not use atomic_* on __iomem (MMIO) memory. 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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 1C366C19759 for ; Wed, 7 Aug 2019 07:08:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DC8B921E6C for ; Wed, 7 Aug 2019 07:08:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="G/pio6E5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726697AbfHGHIh (ORCPT ); Wed, 7 Aug 2019 03:08:37 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:41206 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726159AbfHGHIh (ORCPT ); Wed, 7 Aug 2019 03:08:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=6oMBJ81nXRB0KFK8KufiKsptCeJsMRRDmyRxvUsPSkQ=; b=G/pio6E5CwweDYTkjY9WyrZyx 99Og40vF25oNzLL1D4O5lJXOoKtPMSBDBW4UM44fi1NFlerY07eGBN8LZy1Fk7l0osC4S/3hNaI5/ YkbMubYPzOZfO0zW3EroHHlcanjeqQGDWkHcE81nxYlTVqMKgB3X6xNicXZ3bqTA4KOR+pQRTCIIQ BSDpW/THFBljSd46XrrghAsf7Q26y6OeCtqa8fBX2oVeIk5xA5H9gPgVW6eDJ29R9cM/4DGLicTbR a+lxRJtA/fV5nMT+E6+h005dvSSAv0Ef8D1r0Wr5LbKgC3xLu4FimAkoc+tsJS2/v/vTgD8Dsttmh qsRpkAJ/Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1hvG3m-0007yE-Qu; Wed, 07 Aug 2019 07:08:34 +0000 Date: Wed, 7 Aug 2019 00:08:34 -0700 From: Christoph Hellwig To: Tao Zhou Cc: amd-gfx@lists.freedesktop.org, alexander.deucher@amd.com, hawking.zhang@amd.com, dennis.li@amd.com, broonie@kernel.org, akpm@linux-foundation.org, christian.koenig@amd.com, linux-next@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-build-reports@lists.linaro.org Subject: Re: [PATCH] drm/amdgpu: replace readq/writeq with atomic64 operations Message-ID: <20190807070834.GA24792@infradead.org> References: <20190807025640.682-1-tao.zhou1@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190807025640.682-1-tao.zhou1@amd.com> User-Agent: Mutt/1.11.4 (2019-03-13) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Wed, Aug 07, 2019 at 10:56:40AM +0800, Tao Zhou wrote: > readq/writeq are not supported on all architectures NAK. You must not use atomic_* on __iomem (MMIO) memory. 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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 AEC1DC19759 for ; Wed, 7 Aug 2019 07:09:02 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 843C02199C for ; Wed, 7 Aug 2019 07:09:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="sPbEg9rL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 843C02199C 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+infradead-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=bombadil.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=/P9Yv/mXbFsifJYzwyyspg8Cb15yck7f8AmfqzDvl3U=; b=sPbEg9rL6wQWOn 9bHtO8NA5I+OCqyPVK90Z5H2CgowMGJfwnqNNjtkhi4WtMAH8P81xXFOqwI34J9L0Q1V1kShieO0X jcYK0F4qfHsQnkmkwF2Arb78aiXU3o0c4Sj3iz8DuJio4GLXX/u6+C9WIcORyl1yLXNhUQwUMNCXr wsvMpIPuqSzHic1JEGlGRIQ9VrtykQZPr5v4HSBVmCMiRKR8Q2+HBM/VIu1AuGw+VcuHoNPTEbBuK jFGHPmyVb/vO4ClzZABDN9pGxatA43VZovQ9LjnB3wMn440IzHbEohKPT2WqI9Vi/dYRPULap7gz8 ZuzGNj2cWxAQvObtGqLw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvG3p-0007yO-Me; Wed, 07 Aug 2019 07:08:37 +0000 Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1hvG3m-0007yE-Qu; Wed, 07 Aug 2019 07:08:34 +0000 Date: Wed, 7 Aug 2019 00:08:34 -0700 From: Christoph Hellwig To: Tao Zhou Subject: Re: [PATCH] drm/amdgpu: replace readq/writeq with atomic64 operations Message-ID: <20190807070834.GA24792@infradead.org> References: <20190807025640.682-1-tao.zhou1@amd.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190807025640.682-1-tao.zhou1@amd.com> User-Agent: Mutt/1.11.4 (2019-03-13) 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: linux-arm-kernel@lists.infradead.org, kernel-build-reports@lists.linaro.org, amd-gfx@lists.freedesktop.org, broonie@kernel.org, linux-next@vger.kernel.org, alexander.deucher@amd.com, akpm@linux-foundation.org, christian.koenig@amd.com, dennis.li@amd.com, hawking.zhang@amd.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Aug 07, 2019 at 10:56:40AM +0800, Tao Zhou wrote: > readq/writeq are not supported on all architectures NAK. You must not use atomic_* on __iomem (MMIO) memory. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel