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=-8.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 16B2EC282DD for ; Fri, 10 Jan 2020 17:56:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C79CB2080D for ; Fri, 10 Jan 2020 17:56:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VDHTmh4N" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728883AbgAJR4z (ORCPT ); Fri, 10 Jan 2020 12:56:55 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:44162 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728778AbgAJR4x (ORCPT ); Fri, 10 Jan 2020 12:56:53 -0500 Received: by mail-pg1-f194.google.com with SMTP id x7so1324614pgl.11 for ; Fri, 10 Jan 2020 09:56:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:autocrypt:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=LV3ZO51UnSzYbU8f+RohedOpPRRnxaXUWqjrXj7/zLM=; b=VDHTmh4NJXlsjOFE5IoHJv3DrkRBok8rss1fiJ9kXXBecuqVneoYsDwCBg/7UrtgPM xMjDR0Fi96n2+BXJ/8G6QdB/yH6F6RWyoChp0jcFlqbTVHQxEsvAx+VrZ+PBUjpIFngo Za3M7rTYCVMXPxKMd2lJg98qOb4vqF8ITLRcvTbCYDMbr3iyZCYce/iE+e1I5guzo+cy QbMdc4zB52dtQpsdtQVsatZrCuj10My3Wkqhv7htMeXkYbeXMGYD/9QX7hO95R84bpva Px4RUa7DYKRjZ2nh1Xz6qL3v71YyB/uBxpAlkBWOTHwgFfkxhU5hknhxqHl4a+p0Hi0v iNag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=LV3ZO51UnSzYbU8f+RohedOpPRRnxaXUWqjrXj7/zLM=; b=E6eWSmyvLQaAynizZ7GlJTFhPbH2xPqkTzyhM3mO42fRwvzJQT3yrVuqmIsvPMSHkW aQJpdNiBu8/yCcB3SukLNlQ/TA+q0gTuLHRt5e7vXBgzF5420O5OyZN90rBTK53dlycq +vFuJKOLXgeWatfDkZTFlkjWdc4nmUdAiC9xo4QBZeTyPFqh2PAZb9Npaiz0kq3eORTf e0fqtrDBkfsnXdPGCUJVgvt+HXkr+Z6Dd/16xduy3K7SkariVlUGJxPfnXX9wbLZRjDM rx2e4jJMMA0ILVqoyUM5kVpSwYmIE8aTK+7JUhDu+dph+hJt5LrxlEZvDyjFCAq+9axY dGjA== X-Gm-Message-State: APjAAAWLB7GxAFnLYAHvfxyL8PyOTnREC+Zi2yyxSvxc4FyB1xEfKTeI bqzRcc11pIDJ76IxSmPcGHu26v7c X-Google-Smtp-Source: APXvYqzfBxUGFYn3Yc+VhTxmob3vaFEXrFDjxvlMIPBq2Skh3j5kLcfSwJffLEhLdcGLfofkSGsh8g== X-Received: by 2002:a65:5788:: with SMTP id b8mr5813123pgr.324.1578679012342; Fri, 10 Jan 2020 09:56:52 -0800 (PST) Received: from [10.67.50.41] ([192.19.223.252]) by smtp.googlemail.com with ESMTPSA id 144sm3995871pfc.124.2020.01.10.09.56.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Jan 2020 09:56:51 -0800 (PST) Subject: Re: [RFC] ARM: add multi_v7_lpae_defconfig To: Nicolas Saenz Julienne , Russell King Cc: phil@raspberrypi.org, wahrenst@gmx.net, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20200110173425.21895-1-nsaenzjulienne@suse.de> From: Florian Fainelli Autocrypt: addr=f.fainelli@gmail.com; prefer-encrypt=mutual; keydata= xsDiBEjPuBIRBACW9MxSJU9fvEOCTnRNqG/13rAGsj+vJqontvoDSNxRgmafP8d3nesnqPyR xGlkaOSDuu09rxuW+69Y2f1TzjFuGpBk4ysWOR85O2Nx8AJ6fYGCoeTbovrNlGT1M9obSFGQ X3IzRnWoqlfudjTO5TKoqkbOgpYqIo5n1QbEjCCwCwCg3DOH/4ug2AUUlcIT9/l3pGvoRJ0E AICDzi3l7pmC5IWn2n1mvP5247urtHFs/uusE827DDj3K8Upn2vYiOFMBhGsxAk6YKV6IP0d ZdWX6fqkJJlu9cSDvWtO1hXeHIfQIE/xcqvlRH783KrihLcsmnBqOiS6rJDO2x1eAgC8meAX SAgsrBhcgGl2Rl5gh/jkeA5ykwbxA/9u1eEuL70Qzt5APJmqVXR+kWvrqdBVPoUNy/tQ8mYc nzJJ63ng3tHhnwHXZOu8hL4nqwlYHRa9eeglXYhBqja4ZvIvCEqSmEukfivk+DlIgVoOAJbh qIWgvr3SIEuR6ayY3f5j0f2ejUMYlYYnKdiHXFlF9uXm1ELrb0YX4GMHz80nRmxvcmlhbiBG YWluZWxsaSA8Zi5mYWluZWxsaUBnbWFpbC5jb20+wmYEExECACYCGyMGCwkIBwMCBBUCCAME FgIDAQIeAQIXgAUCVF/S8QUJHlwd3wAKCRBhV5kVtWN2DvCVAJ4u4/bPF4P3jxb4qEY8I2gS 6hG0gACffNWlqJ2T4wSSn+3o7CCZNd7SLSDOwU0EVxvH8AEQAOqv6agYuT4x3DgFIJNv9i0e S443rCudGwmg+CbjXGA4RUe1bNdPHYgbbIaN8PFkXfb4jqg64SyU66FXJJJO+DmPK/t7dRNA 3eMB1h0GbAHlLzsAzD0DKk1ARbjIusnc02aRQNsAUfceqH5fAMfs2hgXBa0ZUJ4bLly5zNbr r0t/fqZsyI2rGQT9h1D5OYn4oF3KXpSpo+orJD93PEDeseho1EpmMfsVH7PxjVUlNVzmZ+tc IDw24CDSXf0xxnaojoicQi7kzKpUrJodfhNXUnX2JAm/d0f9GR7zClpQMezJ2hYAX7BvBajb Wbtzwi34s8lWGI121VjtQNt64mSqsK0iQAE6OYk0uuQbmMaxbBTT63+04rTPBO+gRAWZNDmQ b2cTLjrOmdaiPGClSlKx1RhatzW7j1gnUbpfUl91Xzrp6/Rr9BgAZydBE/iu57KWsdMaqu84 JzO9UBGomh9eyBWBkrBt+Fe1qN78kM7JO6i3/QI56NA4SflV+N4PPgI8TjDVaxgrfUTV0gVa cr9gDE5VgnSeSiOleChM1jOByZu0JTShOkT6AcSVW0kCz3fUrd4e5sS3J3uJezSvXjYDZ53k +0GS/Hy//7PSvDbNVretLkDWL24Sgxu/v8i3JiYIxe+F5Br8QpkwNa1tm7FK4jOd95xvYADl BUI1EZMCPI7zABEBAAHCwagEGBECAAkFAlcbx/ACGwICKQkQYVeZFbVjdg7BXSAEGQECAAYF Alcbx/AACgkQh9CWnEQHBwSJBw//Z5n6IO19mVzMy/ZLU/vu8flv0Aa0kwk5qvDyvuvfiDTd WQzq2PLs+obX0y1ffntluhvP+8yLzg7h5O6/skOfOV26ZYD9FeV3PIgR3QYF26p2Ocwa3B/k P6ENkk2pRL2hh6jaA1Bsi0P34iqC2UzzLq+exctXPa07ioknTIJ09BT31lQ36Udg7NIKalnj 5UbkRjqApZ+Rp0RAP9jFtq1n/gjvZGyEfuuo/G+EVCaiCt3Vp/cWxDYf2qsX6JxkwmUNswuL C3duQ0AOMNYrT6Pn+Vf0kMboZ5UJEzgnSe2/5m8v6TUc9ZbC5I517niyC4+4DY8E2m2V2LS9 es9uKpA0yNcd4PfEf8bp29/30MEfBWOf80b1yaubrP5y7yLzplcGRZMF3PgBfi0iGo6kM/V2 13iD/wQ45QTV0WTXaHVbklOdRDXDHIpT69hFJ6hAKnnM7AhqZ70Qi31UHkma9i/TeLLzYYXz zhLHGIYaR04dFT8sSKTwTSqvm8rmDzMpN54/NeDSoSJitDuIE8givW/oGQFb0HGAF70qLgp0 2XiUazRyRU4E4LuhNHGsUxoHOc80B3l+u3jM6xqJht2ZyMZndbAG4LyVA2g9hq2JbpX8BlsF skzW1kbzIoIVXT5EhelxYEGqLFsZFdDhCy8tjePOWK069lKuuFSssaZ3C4edHtkZ8gCfWWtA 8dMsqeOIg9Trx7ZBCDOZGNAAnjYQmSb2eYOAti3PX3Ex7vI8ZhJCzsNNBEjPuBIQEAC/6NPW 6EfQ91ZNU7e/oKWK91kOoYGFTjfdOatp3RKANidHUMSTUcN7J2mxww80AQHKjr3Yu2InXwVX SotMMR4UrkQX7jqabqXV5G+88bj0Lkr3gi6qmVkUPgnNkIBe0gaoM523ujYKLreal2OQ3GoJ PS6hTRoSUM1BhwLCLIWqdX9AdT6FMlDXhCJ1ffA/F3f3nTN5oTvZ0aVF0SvQb7eIhGVFxrlb WS0+dpyulr9hGdU4kzoqmZX9T/r8WCwcfXipmmz3Zt8o2pYWPMq9Utby9IEgPwultaP06MHY nhda1jfzGB5ZKco/XEaXNvNYADtAD91dRtNGMwRHWMotIGiWwhEJ6vFc9bw1xcR88oYBs+7p gbFSpmMGYAPA66wdDKGj9+cLhkd0SXGht9AJyaRA5AWB85yNmqcXXLkzzh2chIpSEawRsw8B rQIZXc5QaAcBN2dzGN9UzqQArtWaTTjMrGesYhN+aVpMHNCmJuISQORhX5lkjeg54oplt6Zn QyIsOCH3MfG95ha0TgWwyFtdxOdY/UY2zv5wGivZ3WeS0TtQf/BcGre2y85rAohFziWOzTaS BKZKDaBFHwnGcJi61Pnjkz82hena8OmsnsBIucsz4N0wE+hVd6AbDYN8ZcFNIDyt7+oGD1+c PfqLz2df6qjXzq27BBUboklbGUObNwADBQ//V45Z51Q4fRl/6/+oY5q+FPbRLDPlUF2lV6mb hymkpqIzi1Aj/2FUKOyImGjbLAkuBQj3uMqy+BSSXyQLG3sg8pDDe8AJwXDpG2fQTyTzQm6l OnaMCzosvALk2EOPJryMkOCI52+hk67cSFA0HjgTbkAv4Mssd52y/5VZR28a+LW+mJIZDurI Y14UIe50G99xYxjuD1lNdTa/Yv6qFfEAqNdjEBKNuOEUQOlTLndOsvxOOPa1mRUk8Bqm9BUt LHk3GDb8bfDwdos1/h2QPEi+eI+O/bm8YX7qE7uZ13bRWBY+S4+cd+Cyj8ezKYAJo9B+0g4a RVhdhc3AtW44lvZo1h2iml9twMLfewKkGV3oG35CcF9mOd7n6vDad3teeNpYd/5qYhkopQrG k2oRBqxyvpSLrJepsyaIpfrt5NNaH7yTCtGXcxlGf2jzGdei6H4xQPjDcVq2Ra5GJohnb/ix uOc0pWciL80ohtpSspLlWoPiIowiKJu/D/Y0bQdatUOZcGadkywCZc/dg5hcAYNYchc8AwA4 2dp6w8SlIsm1yIGafWlNnfvqbRBglSTnxFuKqVggiz2zk+1wa/oP+B96lm7N4/3Aw6uy7lWC HvsHIcv4lxCWkFXkwsuWqzEKK6kxVpRDoEQPDj+Oy/ZJ5fYuMbkdHrlegwoQ64LrqdmiVVPC TwQYEQIADwIbDAUCVF/S8QUJHlwd3wAKCRBhV5kVtWN2Do+FAJ956xSz2XpDHql+Wg/2qv3b G10n8gCguORqNGMsVRxrlLs7/himep7MrCc= Message-ID: <28c80303-1476-a9ce-32f5-15e0148167b7@gmail.com> Date: Fri, 10 Jan 2020 09:56:50 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <20200110173425.21895-1-nsaenzjulienne@suse.de> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/10/20 9:34 AM, Nicolas Saenz Julienne wrote: > The only missing configuration option preventing us from using > multi_v7_defconfig with the RPi4 is ARM_LPAE. It's needed as the PCIe > controller found on the SoC depends on 64bit addressing, yet can't be > included as not all v7 boards support LPAE. You might still be able to map the PCIe space above 4GB by using a super section though I am not sure how easy that would be to do with __map_init_section for instance and for the 4GB Pi4, we would not be able to address the entire DRAM space anyway. Besides, having a LPAE variant of the multi_v7_defconfig has a lot of value given that there are a few ARMv7 platforms that support LPAE. > > Introduce multi_v7_lpae_defconfig, built off multi_v7_defconfig, which will > avoid us having to duplicate and maintain multiple similar configurations. > > Note that merge_into_defconfig was taken from arch/powerpc/Makefile. Would it make sense to move that make macro to scripts and keep just the multi_v7_lape_defconfig make target under arch/arm/Makefile? > > Signed-off-by: Nicolas Saenz Julienne > --- > arch/arm/Makefile | 14 ++++++++++++++ > arch/arm/configs/lpae.config | 1 + > 2 files changed, 15 insertions(+) > create mode 100644 arch/arm/configs/lpae.config > > diff --git a/arch/arm/Makefile b/arch/arm/Makefile > index db857d07114f..3d157777a465 100644 > --- a/arch/arm/Makefile > +++ b/arch/arm/Makefile > @@ -356,6 +356,20 @@ archclean: > # My testing targets (bypasses dependencies) > bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage > > +# Used to create 'merged defconfigs' > +# To use it $(call) it with the first argument as the base defconfig > +# and the second argument as a space separated list of .config files to merge, > +# without the .config suffix. > +define merge_into_defconfig > + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ > + -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \ > + $(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config) > + +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig > +endef > + > +PHONY += multi_v7_lpae_defconfig > +multi_v7_lpae_defconfig: > + $(call merge_into_defconfig,multi_v7_defconfig,lpae) > > define archhelp > echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' > diff --git a/arch/arm/configs/lpae.config b/arch/arm/configs/lpae.config > new file mode 100644 > index 000000000000..19bab134e014 > --- /dev/null > +++ b/arch/arm/configs/lpae.config > @@ -0,0 +1 @@ > +CONFIG_ARM_LPAE=y > -- Florian