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 131C3C369D1 for ; Wed, 23 Apr 2025 16:02:02 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 021A26B0085; Wed, 23 Apr 2025 12:02:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F13296B0088; Wed, 23 Apr 2025 12:02:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DD8D36B008A; Wed, 23 Apr 2025 12:02:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id C00E76B0085 for ; Wed, 23 Apr 2025 12:02:00 -0400 (EDT) Received: from smtpin03.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id CF43F161182 for ; Wed, 23 Apr 2025 16:02:01 +0000 (UTC) X-FDA: 83365774842.03.D66A55D Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by imf01.hostedemail.com (Postfix) with ESMTP id B8ADB40016 for ; Wed, 23 Apr 2025 16:01:58 +0000 (UTC) Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=K0hvYXZ6; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf01.hostedemail.com: domain of dave.hansen@intel.com designates 198.175.65.10 as permitted sender) smtp.mailfrom=dave.hansen@intel.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1745424119; a=rsa-sha256; cv=none; b=JlrgnJjmSMYTKWUtEFQTz999rFQN8d21gFI3X9S7vb3hWKmX4Lrs2mrN+cSOzGu3FqbuEh 2r6Fc6bwjh8t0eQTcnc55fURuo0mWrsLV+0TVIxywpne2VqABK8XkvyVmh94NNdUVNOlja mxsBtn5V50LSFaGjRoL9QcwPbZaAh40= ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=K0hvYXZ6; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf01.hostedemail.com: domain of dave.hansen@intel.com designates 198.175.65.10 as permitted sender) smtp.mailfrom=dave.hansen@intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1745424119; 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=pCO8o87qXxdCKSaPU53P3/C01bzp6El7xLsgkCDcNBU=; b=TZHONBuzFwILB/vrFDsPPWMZP16i8JRSMxixnUIztb84rak5ktZT+80N0fYN+VxfuDS7Eo yfDOVcGAgNBnXNe+nINw8BJwCn3oFCN6XzKCAS3lKtXtTGVWiZTRNCqKbLwyyrVoSugL4V sBFKkpYfvn+YSSBekgwLTK7C5eyzRWs= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1745424119; x=1776960119; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=A54MdhVOBQxwgtIaTuJyBG4odsyL8HwDnJubodBv118=; b=K0hvYXZ64ovMJ+O74tL6BZt+xAxiDvIezNv22F1vHShtTkKXIpge1Tpt a8d3z8Ix1GA/zOBzjKskf4ZLKAVK6ayEs4nzO8NULdnUfYoeQTafKJ/3D gf6BEB3IethheVYAI/2erSW3HjBemIouETcUFVF1jBu0TnWYkHSjwWz9L 5GBwLVJ5YFmdfuP4+S03WDRBYYh5W0csX2+mr9/uC6rGwykwxB1rc6nKn A5Db2lMl3BjiImioxD9XV8A+AM2kLH4uyOedrxXa5YVQlozm72laa1Z2v D7rnauNL+NVqW+PHB9JfxjsYbCHDJajaEJ6K7iROgT0yOrIDMcDkVU2kd w==; X-CSE-ConnectionGUID: Pc46oM3wQNSETYzCduGKvg== X-CSE-MsgGUID: Aard2iB4RKiS9sxNQqnn9g== X-IronPort-AV: E=McAfee;i="6700,10204,11412"; a="64436394" X-IronPort-AV: E=Sophos;i="6.15,233,1739865600"; d="scan'208";a="64436394" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Apr 2025 09:01:57 -0700 X-CSE-ConnectionGUID: mv0934QDT2OaFSrEIMZa3w== X-CSE-MsgGUID: xidadFf9RCysHgcuI7tRPw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.15,233,1739865600"; d="scan'208";a="132269852" Received: from tfalcon-desk.amr.corp.intel.com (HELO [10.124.221.81]) ([10.124.221.81]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Apr 2025 09:01:57 -0700 Message-ID: <2cba2ae9-e29d-4eab-a77a-678be0b09a58@intel.com> Date: Wed, 23 Apr 2025 09:01:54 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: AMD GPU driver load hitting BUG_ON in sync_global_pgds_l5() To: Bharata B Rao , linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Dave Hansen , luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, nikunj@amd.com, Balbir Singh , kees@kernel.org, alexander.deucher@amd.com References: <19353ca2-11f3-4718-b602-d898ff05ba87@intel.com> <83cf7fc7-23e0-46f5-916b-5341a0ab9599@amd.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: <83cf7fc7-23e0-46f5-916b-5341a0ab9599@amd.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: B8ADB40016 X-Stat-Signature: mu4o9kzuitdjs5xhf3boptktaoh1n8nk X-Rspam-User: X-HE-Tag: 1745424118-343124 X-HE-Meta: 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 0ZfbKLf7 ICTib+6WjyfyvyaOcXDQXM1VS+KYNeNl/PUyHOtGlnf49zkowWZIKL2+AAt/6rVTHO+upQsvTbbyG1sh47T8fydWojFCV7NiK9bgg0OZzYCkk2o8NhxWJMEhBhZr4BzHJ7ZPWiKzdKrE+jbJEadstakUj6BySkiM7ci71Vrbn8AmVJL2ozj80AybQhjsN73JtYVxRAkaZ2SHqTuqqucLZUeaiqHdVfy/MdAr1NTtXIOeIICmJdGX09M1ie1RBcNLAa0mR 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 4/23/25 02:30, Bharata B Rao wrote: > On 22-Apr-25 8:43 PM, Dave Hansen wrote: >> On 4/21/25 23:34, Bharata B Rao wrote: >>> At the outset, it appears that the selection of vmemmap_base doesn't >>> seem to consider if there is going to be enough room of accommodating >>> future hot plugged pages. >> >> Is this future hotplug area in the memory map at boot? > > The KVM guest isn't using any -m maxmem option if that's what you are > hinting at. How could vmemmap_base consider future hotplug areas if it isn't told where they will be?