[{"id":1773013,"web_url":"http://patchwork.ozlabs.org/comment/1773013/","msgid":"<20170921172126.GJ30097@localhost>","list_archive_url":null,"date":"2017-09-21T17:21:26","subject":"Re: [PATCH v2] dmaengine: edma: Align the memcpy acnt array size\n\twith the transfer","submitter":{"id":8232,"url":"http://patchwork.ozlabs.org/api/people/8232/","name":"Vinod Koul","email":"vinod.koul@intel.com"},"content":"On Mon, Sep 18, 2017 at 11:16:26AM +0300, Peter Ujfalusi wrote:\n> Memory to Memory transfers does not have any special alignment needs\n> regarding to acnt array size, but if one of the areas are in memory mapped\n> regions (like PCIe memory), we need to make sure that the acnt array size\n> is aligned with the mem copy parameters.\n> \n> Before \"dmaengine: edma: Optimize memcpy operation\" change the memcpy was set\n> up in a different way: acnt == number of bytes in a word based on\n> __ffs((src | dest | len), bcnt and ccnt for looping the necessary number of\n> words to comlete the trasnfer.\n> \n> Instead of reverting the commit we can fix it to make sure that the ACNT size\n> is aligned to the traswnfer.\n\nApplied, thanks","headers":{"Return-Path":"","X-Original-To":"incoming-imx@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming-imx@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.infradead.org\n\t(client-ip=65.50.211.133; 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d=\"scan'208\";a=\"137990518\"","Date":"Thu, 21 Sep 2017 22:51:26 +0530","From":"Vinod Koul ","To":"Peter Ujfalusi ","Subject":"Re: [PATCH v2] dmaengine: edma: Align the memcpy acnt array size\n\twith the transfer","Message-ID":"<20170921172126.GJ30097@localhost>","References":"<20170918081626.12878-1-peter.ujfalusi@ti.com>","MIME-Version":"1.0","Content-Disposition":"inline","In-Reply-To":"<20170918081626.12878-1-peter.ujfalusi@ti.com>","User-Agent":"Mutt/1.5.24 (2015-08-30)","X-CRM114-Version":"20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ","X-CRM114-CacheID":"sfid-20170921_101758_669431_596DBB8C ","X-CRM114-Status":"GOOD ( 10.07 )","X-Spam-Score":"-4.2 (----)","X-Spam-Report":"SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-4.2 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/,\n\tmedium trust [134.134.136.100 listed in list.dnswl.org]\n\t-0.0 SPF_PASS SPF: sender matches SPF record\n\t-0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay\n\tdomain\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]","X-BeenThere":"linux-arm-kernel@lists.infradead.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"linux-kernel@vger.kernel.org, stable@vger.kernel.org,\n\tdmaengine@vger.kernel.org, dan.j.williams@intel.com,\n\tlinux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org","Content-Type":"text/plain; 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