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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4548DC3ABD8 for ; Fri, 16 May 2025 15:46:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7CF446B01F4; Fri, 16 May 2025 11:46:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 730896B01F5; Fri, 16 May 2025 11:46:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 586C86B01F6; Fri, 16 May 2025 11:46:16 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 365706B01F4 for ; Fri, 16 May 2025 11:46:16 -0400 (EDT) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id CC428BCA47 for ; Fri, 16 May 2025 15:46:16 +0000 (UTC) X-FDA: 83449197552.15.A23638E Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) by imf12.hostedemail.com (Postfix) with ESMTP id 8181040009 for ; Fri, 16 May 2025 15:46:13 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=XfgNCcYH; spf=pass (imf12.hostedemail.com: domain of dave.hansen@intel.com designates 198.175.65.12 as permitted sender) smtp.mailfrom=dave.hansen@intel.com; dmarc=pass (policy=none) header.from=intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1747410374; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=ZQv9u+DBEJODjZIxxY0UyslvymZ22wnfd1lV8DkISCI=; b=VHM1kZAxHJUiXHWbQMycvuubw2tch8CraddqP5acGtB9oEXWHFy9Z9OnYnyg2V9WbcFW/q e+9TbiB532xH97Pkt0fLKmqKbICe6dxKJ8SbrFlKyX50GJ6uDZjZT81ZC6u7ZeoC2fYeoU OFQYSRcQqhS/YrIE+O7FIhZeOGCn6Wc= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1747410374; a=rsa-sha256; cv=none; b=bIk8v4Ci0O0GKuP8g8Z6sVMEdytUMxCaYlNthZft6h5qLV5LI9Di/Gg6Xg5AxY3iHtbjMQ g086O+1/OWrgngxzM9U9CwZGOKZ384KAZwUoT2MYDPWhNXP6k37N4gF2ibuxiwGk/1xDjI iDVNa+tUxWPsUbROtb72Vrwhd5uJqQ8= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=XfgNCcYH; spf=pass (imf12.hostedemail.com: domain of dave.hansen@intel.com designates 198.175.65.12 as permitted sender) smtp.mailfrom=dave.hansen@intel.com; dmarc=pass (policy=none) header.from=intel.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1747410374; x=1778946374; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=YOct36wsdsrYSPKgS496ap91/7Zq3RdptojbvTfmIc4=; b=XfgNCcYHuZnrRjzJJwt7gpmgbrxrIo2eSEStRxwVjfP/1R5xnqmfQHBO nmqD7mh6JG+DxFebIZg/1RVPMgHIGL1tueUyWfUPA83OlqyOyijwbeOoq xvudP7bMPVx37S5DHRPsBFfk9hBoe0iF0BZ3w9r5oyOxqKbOcuZ3Me/zl m/DlV3p/QdIx37d+vjrn71VN1JxZAYi5vYpc7dtaarSox47Fb5UYmq/Xl HBO1Q/t7y0nGnQhshDa7Y/XS/51Gd5f6cF+3bshouTEtP9GESgqiV1OJR OQ/KVUo9lC51RkQ1UKEPBGcCODUkM7mZM0xx7STT2nLgczsQcCz8X8jvn g==; X-CSE-ConnectionGUID: ig5W8asKSIShkNSzpnzGXQ== X-CSE-MsgGUID: BBBNN++5SUadvAktsyIlQQ== X-IronPort-AV: E=McAfee;i="6700,10204,11435"; a="60777700" X-IronPort-AV: E=Sophos;i="6.15,294,1739865600"; d="scan'208";a="60777700" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2025 08:46:12 -0700 X-CSE-ConnectionGUID: MDlUW5GlQ8qzmJTbRJ1mtQ== X-CSE-MsgGUID: tdflQrAvSjCo/HNAqOkzIA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,294,1739865600"; d="scan'208";a="169767272" Received: from vverma7-desk1.amr.corp.intel.com (HELO [10.125.109.57]) ([10.125.109.57]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 May 2025 08:46:11 -0700 Message-ID: <6c33159d-8e4f-474b-a60a-bfa95eca6042@intel.com> Date: Fri, 16 May 2025 08:46:07 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCHv3 2/4] x86/64/mm: Make SPARSEMEM_VMEMMAP the only memory model To: Ingo Molnar Cc: "Kirill A. Shutemov" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Jonathan Corbet , Andy Lutomirski , Peter Zijlstra , Ard Biesheuvel , Jan Kiszka , Kieran Bingham , Michael Roth , Rick Edgecombe , Brijesh Singh , Sandipan Das , Juergen Gross , Tom Lendacky , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-efi@vger.kernel.org, linux-mm@kvack.org References: <20250516123306.3812286-1-kirill.shutemov@linux.intel.com> <20250516123306.3812286-3-kirill.shutemov@linux.intel.com> <30570ca0-8da4-4ebc-84d6-0a4badfb7154@intel.com> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; keydata= xsFNBE6HMP0BEADIMA3XYkQfF3dwHlj58Yjsc4E5y5G67cfbt8dvaUq2fx1lR0K9h1bOI6fC oAiUXvGAOxPDsB/P6UEOISPpLl5IuYsSwAeZGkdQ5g6m1xq7AlDJQZddhr/1DC/nMVa/2BoY 2UnKuZuSBu7lgOE193+7Uks3416N2hTkyKUSNkduyoZ9F5twiBhxPJwPtn/wnch6n5RsoXsb ygOEDxLEsSk/7eyFycjE+btUtAWZtx+HseyaGfqkZK0Z9bT1lsaHecmB203xShwCPT49Blxz VOab8668QpaEOdLGhtvrVYVK7x4skyT3nGWcgDCl5/Vp3TWA4K+IofwvXzX2ON/Mj7aQwf5W iC+3nWC7q0uxKwwsddJ0Nu+dpA/UORQWa1NiAftEoSpk5+nUUi0WE+5DRm0H+TXKBWMGNCFn c6+EKg5zQaa8KqymHcOrSXNPmzJuXvDQ8uj2J8XuzCZfK4uy1+YdIr0yyEMI7mdh4KX50LO1 pmowEqDh7dLShTOif/7UtQYrzYq9cPnjU2ZW4qd5Qz2joSGTG9eCXLz5PRe5SqHxv6ljk8mb ApNuY7bOXO/A7T2j5RwXIlcmssqIjBcxsRRoIbpCwWWGjkYjzYCjgsNFL6rt4OL11OUF37wL QcTl7fbCGv53KfKPdYD5hcbguLKi/aCccJK18ZwNjFhqr4MliQARAQABzUVEYXZpZCBDaHJp c3RvcGhlciBIYW5zZW4gKEludGVsIFdvcmsgQWRkcmVzcykgPGRhdmUuaGFuc2VuQGludGVs LmNvbT7CwXgEEwECACIFAlQ+9J0CGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEGg1 lTBwyZKwLZUP/0dnbhDc229u2u6WtK1s1cSd9WsflGXGagkR6liJ4um3XCfYWDHvIdkHYC1t MNcVHFBwmQkawxsYvgO8kXT3SaFZe4ISfB4K4CL2qp4JO+nJdlFUbZI7cz/Td9z8nHjMcWYF IQuTsWOLs/LBMTs+ANumibtw6UkiGVD3dfHJAOPNApjVr+M0P/lVmTeP8w0uVcd2syiaU5jB aht9CYATn+ytFGWZnBEEQFnqcibIaOrmoBLu2b3fKJEd8Jp7NHDSIdrvrMjYynmc6sZKUqH2 I1qOevaa8jUg7wlLJAWGfIqnu85kkqrVOkbNbk4TPub7VOqA6qG5GCNEIv6ZY7HLYd/vAkVY E8Plzq/NwLAuOWxvGrOl7OPuwVeR4hBDfcrNb990MFPpjGgACzAZyjdmYoMu8j3/MAEW4P0z F5+EYJAOZ+z212y1pchNNauehORXgjrNKsZwxwKpPY9qb84E3O9KYpwfATsqOoQ6tTgr+1BR CCwP712H+E9U5HJ0iibN/CDZFVPL1bRerHziuwuQuvE0qWg0+0SChFe9oq0KAwEkVs6ZDMB2 P16MieEEQ6StQRlvy2YBv80L1TMl3T90Bo1UUn6ARXEpcbFE0/aORH/jEXcRteb+vuik5UGY 5TsyLYdPur3TXm7XDBdmmyQVJjnJKYK9AQxj95KlXLVO38lczsFNBFRjzmoBEACyAxbvUEhd GDGNg0JhDdezyTdN8C9BFsdxyTLnSH31NRiyp1QtuxvcqGZjb2trDVuCbIzRrgMZLVgo3upr MIOx1CXEgmn23Zhh0EpdVHM8IKx9Z7V0r+rrpRWFE8/wQZngKYVi49PGoZj50ZEifEJ5qn/H Nsp2+Y+bTUjDdgWMATg9DiFMyv8fvoqgNsNyrrZTnSgoLzdxr89FGHZCoSoAK8gfgFHuO54B lI8QOfPDG9WDPJ66HCodjTlBEr/Cwq6GruxS5i2Y33YVqxvFvDa1tUtl+iJ2SWKS9kCai2DR 3BwVONJEYSDQaven/EHMlY1q8Vln3lGPsS11vSUK3QcNJjmrgYxH5KsVsf6PNRj9mp8Z1kIG qjRx08+nnyStWC0gZH6NrYyS9rpqH3j+hA2WcI7De51L4Rv9pFwzp161mvtc6eC/GxaiUGuH BNAVP0PY0fqvIC68p3rLIAW3f97uv4ce2RSQ7LbsPsimOeCo/5vgS6YQsj83E+AipPr09Caj 0hloj+hFoqiticNpmsxdWKoOsV0PftcQvBCCYuhKbZV9s5hjt9qn8CE86A5g5KqDf83Fxqm/ vXKgHNFHE5zgXGZnrmaf6resQzbvJHO0Fb0CcIohzrpPaL3YepcLDoCCgElGMGQjdCcSQ+Ci FCRl0Bvyj1YZUql+ZkptgGjikQARAQABwsFfBBgBAgAJBQJUY85qAhsMAAoJEGg1lTBwyZKw l4IQAIKHs/9po4spZDFyfDjunimEhVHqlUt7ggR1Hsl/tkvTSze8pI1P6dGp2XW6AnH1iayn yRcoyT0ZJ+Zmm4xAH1zqKjWplzqdb/dO28qk0bPso8+1oPO8oDhLm1+tY+cOvufXkBTm+whm +AyNTjaCRt6aSMnA/QHVGSJ8grrTJCoACVNhnXg/R0g90g8iV8Q+IBZyDkG0tBThaDdw1B2l asInUTeb9EiVfL/Zjdg5VWiF9LL7iS+9hTeVdR09vThQ/DhVbCNxVk+DtyBHsjOKifrVsYep WpRGBIAu3bK8eXtyvrw1igWTNs2wazJ71+0z2jMzbclKAyRHKU9JdN6Hkkgr2nPb561yjcB8 sIq1pFXKyO+nKy6SZYxOvHxCcjk2fkw6UmPU6/j/nQlj2lfOAgNVKuDLothIxzi8pndB8Jju KktE5HJqUUMXePkAYIxEQ0mMc8Po7tuXdejgPMwgP7x65xtfEqI0RuzbUioFltsp1jUaRwQZ MTsCeQDdjpgHsj+P2ZDeEKCbma4m6Ez/YWs4+zDm1X8uZDkZcfQlD9NldbKDJEXLIjYWo1PH hYepSffIWPyvBMBTW2W5FRjJ4vLRrJSUoEfJuPQ3vW9Y73foyo/qFoURHO48AinGPZ7PC7TF vUaNOTjKedrqHkaOcqB185ahG2had0xnFsDPlx5y In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 8181040009 X-Stat-Signature: nwpagbjmghb59phrbeha5ox7xp6ji1ji X-Rspam-User: X-HE-Tag: 1747410373-751331 X-HE-Meta: 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 j6sxxb39 8SyioMr+v1TQuJD4R0CyHW9hdivTCKRyzc+CNCyuLEtlDhf7ZqcRpk5e2VTz25JxVkWW8OItHM99r05Ez4mESA0IqMNjqkiDdBnfI5J/+GpoEwUWaRcWskNU9Pg7UDAsf5hDuERZ8UFmfBclgvdNOtFEzBeq7QynNVMP5CyuA/srIMBtWYs4M6XoAlnf5R+UvasU8tD2lQ8rtf8JXvRnpSsbB/OkXftBtb75fvRrxFn8D/u253riV0Qp0lUsHjdA01Rj/ X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 5/16/25 08:35, Ingo Molnar wrote: > .config.opensuse.default: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y > .config.ubuntu.localinstall: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y > .config.fedora.generic: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y > .config.rhel.generic: CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y That reminds me... Does everybody keep their own local copies of these configs in their environment? I do, and I refresh them periodically from the distros. I assume everybody else is doing something similar. Is there a better way?