From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux Subject: Re: [PATCH v4] ARM: l2c: add options to overwrite prefetching behavior Date: Thu, 11 Jun 2015 10:34:17 +0100 Message-ID: <20150611093417.GV7557@n2100.arm.linux.org.uk> References: <1432941541-18588-1-git-send-email-hauke@hauke-m.de> <20150610172100.230c0e71@free-electrons.com> <55788F6B.7060406@hauke-m.de> <20150611112459.6590ab05@free-electrons.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20150611112459.6590ab05-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Thomas Petazzoni Cc: Hauke Mehrtens , arnd-r2nGTMty4D4@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, f.fainelli-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org, catalin.marinas-5wv7dgnIgG8@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Gregory =?iso-8859-1?Q?Cl=E9ment?= List-Id: devicetree@vger.kernel.org On Thu, Jun 11, 2015 at 11:24:59AM +0200, Thomas Petazzoni wrote: > Dear Hauke Mehrtens, > > On Wed, 10 Jun 2015 21:26:35 +0200, Hauke Mehrtens wrote: > > > Thanks for asking, I did not know Russell's patch process, but Florian > > guided me and now it is submitted, see > > http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=8391/1 > > I tested your patch, and I'm not sure how it can work for you, because > the changes made to the PREFETCH_CTRL register on the data/instruction > prefetch bits are later overridden by changes made to the AUX_CTRL > register. There's also a patch I sent on May 14th which needs to be applied for this to work, and fixes the above. > How does your patch handles the fact that the prefetch data and > prefetch instr are cloned between PREFETCH_CTRL and AUX_CTRL ? It needs my patch. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Thu, 11 Jun 2015 10:34:17 +0100 Subject: [PATCH v4] ARM: l2c: add options to overwrite prefetching behavior In-Reply-To: <20150611112459.6590ab05@free-electrons.com> References: <1432941541-18588-1-git-send-email-hauke@hauke-m.de> <20150610172100.230c0e71@free-electrons.com> <55788F6B.7060406@hauke-m.de> <20150611112459.6590ab05@free-electrons.com> Message-ID: <20150611093417.GV7557@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Jun 11, 2015 at 11:24:59AM +0200, Thomas Petazzoni wrote: > Dear Hauke Mehrtens, > > On Wed, 10 Jun 2015 21:26:35 +0200, Hauke Mehrtens wrote: > > > Thanks for asking, I did not know Russell's patch process, but Florian > > guided me and now it is submitted, see > > http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=8391/1 > > I tested your patch, and I'm not sure how it can work for you, because > the changes made to the PREFETCH_CTRL register on the data/instruction > prefetch bits are later overridden by changes made to the AUX_CTRL > register. There's also a patch I sent on May 14th which needs to be applied for this to work, and fixes the above. > How does your patch handles the fact that the prefetch data and > prefetch instr are cloned between PREFETCH_CTRL and AUX_CTRL ? It needs my patch. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net.