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Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:40376) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jg5wQ-0002ma-DN; Tue, 02 Jun 2020 13:22:50 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1jg5wN-0004NJ-Mu; Tue, 02 Jun 2020 13:22:47 +0100 Date: Tue, 2 Jun 2020 13:22:47 +0100 From: Russell King - ARM Linux admin To: Geert Uytterhoeven Subject: Re: [PATCH 0/2] ARM: Allow either FLATMEM or SPARSEMEM on the multiplatform build Message-ID: <20200602122247.GV1551@shell.armlinux.org.uk> References: <20200521081825.1348844-1-rppt@linux.ibm.com> <20200521120308.GR1551@shell.armlinux.org.uk> <20200521123327.GQ1059226@linux.ibm.com> <20200521140745.GS1059226@linux.ibm.com> <20200521145020.GS1551@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200602_052301_665693_46BAC405 X-CRM114-Status: GOOD ( 17.42 ) 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: Florian Fainelli , Arnd Bergmann , Stephen Boyd , Kevin Cernekee , Mike Rapoport , Doug Berger , Gregory Fong , Linux ARM 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 Tue, Jun 02, 2020 at 02:18:48PM +0200, Geert Uytterhoeven wrote: > Hi Russell, > > On Thu, May 21, 2020 at 4:50 PM Russell King - ARM Linux admin > wrote: > > On Thu, May 21, 2020 at 05:07:45PM +0300, Mike Rapoport wrote: > > > Ah, when either of these patforms will become a part of the > > > multiplatform build, the only option for multiplatform build will be > > > sparsemem. > > > So it would be nice if somebody could check the cost of using sparsemem > > > vs flatmem, espessially on low end machines. > > > > Do you think they will become part of multiplatform? > > > > If they're low-end machines, then adding: > > > > (a) the additional memory overhead of a multiplatform kernel > > (b) the additional runtime overhead of the complexities of multiplatform > > kernels > > > > is surely an odd thing to do, especially when few really care about > > these platforms becoming part of a multiplatform kernel, except those > > who like the idea of multiplat. > > The fallacy of "multi-platform", again? > > Isn't it a requirement for any new ARM v7-A platforms to be part of > ARCH_MULTI_V7, even if it's a low-end machine? What does ARMv7 have to do with this thread, that is discussing the older ARMv4 platforms? I find your comments above irrelevent to this discussion, and seems to be worded to provoke a reaction. Not playing. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC for 0.8m (est. 1762m) line in suburbia: sync at 13.1Mbps down 424kbps up _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel