From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 30 Jul 2024 10:10:57 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1sYhwf-004OwH-0o for lore@lore.pengutronix.de; Tue, 30 Jul 2024 10:10:57 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sYhwe-000498-MK for lore@pengutronix.de; Tue, 30 Jul 2024 10:10:57 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:To: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gXthlA8XFXs+YKDkhpXCo+7VQ7ieg3ls82+oQzSrWuI=; b=R0X2kIST7Qn4Itrc/XUPtxQvdF 1j09Pq0B7vxtHD59kfI16mukEpRYi86/o+3JTlKQzI2uA4gWWS69cYkxBmSk8nccUh0tzSTJ9kt+k U3qUavGeNFgQ2azL4IFQm0zLzeKB2pBl4e9mNDFLCueJqDkfJDSt0M5OeUADBmXTpXrWL+QtQptWy LLN0qWpu7gtK2ndurOlk5c90jWYaVm7QGI/TNGdok7H51jNe4reXJf1ZbrldtaLza9+fDC6zwoBRD vMV+Y7oVtBZWHuq6+Rr/Q+S2a1JYxQDYWEjPGjDLz/TiIp2lkHzfAeCA2fXg8vY4P0aL1aPFXq+Cn 4mwGvg4g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sYhwD-0000000EB3P-05ga; Tue, 30 Jul 2024 08:10:29 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sYhwA-0000000EB34-3AZn for barebox@lists.infradead.org; Tue, 30 Jul 2024 08:10:28 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sYhw9-00046A-7w; Tue, 30 Jul 2024 10:10:25 +0200 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sYhw8-003Emh-Qe; Tue, 30 Jul 2024 10:10:24 +0200 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1sYhw8-004YBT-2Q; Tue, 30 Jul 2024 10:10:24 +0200 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum In-Reply-To: <20240724152327.3328745-1-a.fatoum@pengutronix.de> References: <20240724152327.3328745-1-a.fatoum@pengutronix.de> Message-Id: <172232702475.1084652.5007689214174275778.b4-ty@pengutronix.de> Date: Tue, 30 Jul 2024 10:10:24 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.12.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240730_011026_820816_7369E6A4 X-CRM114-Status: UNSURE ( 7.28 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] net: designware: dma_sync_single_for_device buffer before passing to HW X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Wed, 24 Jul 2024 17:23:27 +0200, Ahmad Fatoum wrote: > For cache-incoherent DMA, dma_sync_single_for_cpu with DMA_FROM_DEVICE > invalidates the cache, so no stale lines in the cache hide what the > hardware had written to RAM. > > On the same systems, dma_sync_single_for_device with DMA_FROM_DEVICE also > invalidates the cache, so no dirty lines from the CPU are evicted > clobbering what the hardware had written to RAM. > > [...] Applied, thanks! [1/1] net: designware: dma_sync_single_for_device buffer before passing to HW https://git.pengutronix.de/cgit/barebox/commit/?id=dcd743414b15 (link may not be stable) Best regards, -- Sascha Hauer