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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1F8F4D2ECF6 for ; Mon, 19 Jan 2026 22:45:00 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0CD376B0307; Mon, 19 Jan 2026 17:44:59 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 07B396B0308; Mon, 19 Jan 2026 17:44:59 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E9EE66B0309; Mon, 19 Jan 2026 17:44:58 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id DAA4E6B0307 for ; Mon, 19 Jan 2026 17:44:58 -0500 (EST) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 78A5957F6F for ; Mon, 19 Jan 2026 22:44:58 +0000 (UTC) X-FDA: 84350195076.08.FD26EF6 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf29.hostedemail.com (Postfix) with ESMTP id 9B66112000B for ; Mon, 19 Jan 2026 22:44:56 +0000 (UTC) Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=kzM1N7rr; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf29.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1768862696; a=rsa-sha256; cv=none; b=u2JzS2W6p195rDT/O1Ta4iK7R16oXS6wG9enHumzYHl/Od0GT2iKgARyReZFEe1yJ80nWz rYlKkmzWKNM6biN+ubOX1A/y6sevusGjiQGCtdhLOP3lntEB0YFjH3+iDllt39NcCWfzyo N8d54AntFWyynRSgX4IFsisclnWLIJY= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=kzM1N7rr; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf29.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1768862696; 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=gm9dc5F2jfcBg4JViz581iboiF7iqo0o6V9OAwa47g0=; b=CSg8BlzUOvhdcTTgwQ4pkl4LD3otqlbJtSGBsOpnvVXtM5yxSOFAR2A9clvBdUiaR6u66R YzMEKEiOLNkPT1OxyxpcWE2i0UTBu1+LUMFOi+G1JZTH0G3mwJn9sZU5aDuhDwbx6n/FiV zOgqwk84d/pHH58Sn9tQgHpTDljishA= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 7EE9642A27; Mon, 19 Jan 2026 22:44:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BC3CC116C6; Mon, 19 Jan 2026 22:44:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768862695; bh=XoSUqnCMf3akJ4bcHDXMf3EcSxhGjttPB+TdRBpbklM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=kzM1N7rr7Ang0VD4BF8ItnVdga7joaGshQyjPdaoprj+LIsVrOTh6NTLL3LcRhEDu w/Ah87KxBbK/AfLbZZsTZmbZoLFgAEwTih8VyEKdS0r3gCUCor/g2fREFge+xBt5f+ VDmUfXrggSHvhE7EE2wbcn1Rcc3Jc5u6iWO8Hr6qm7g4Rve1G1Z/JJuSRtp5Hq8Vrb XZprHzSJl9mYs1fzJcRc7Com2eFTPbivtKMflYSWPTieY4ZiAlDPJ54WfQmB2kqFHZ UKZwQLl5UD/82OgegaKgvNT5bxD2hUK2GaaYOd6kABc95He3NmGFihWZHDBb17dIvJ x5JJ1vqfdw3Ew== Message-ID: <47108ae5-fc73-432f-9942-c2fe5fbf4bb5@kernel.org> Date: Mon, 19 Jan 2026 23:44:47 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 03/23] powerpc/pseries/cmm: remove cmm_balloon_compaction_init() To: Lorenzo Stoakes Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, Broadcom internal kernel review list , linux-doc@vger.kernel.org, virtualization@lists.linux.dev, Andrew Morton , Oscar Salvador , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Arnd Bergmann , Greg Kroah-Hartman , Jerrin Shaji George , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?UTF-8?Q?Eugenio_P=C3=A9rez?= , Zi Yan References: <20260115092015.3928975-1-david@kernel.org> <20260115092015.3928975-4-david@kernel.org> <5ed94c8a-35ac-4635-aeac-3fe72d4f9c8e@lucifer.local> From: "David Hildenbrand (Red Hat)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAa2VybmVsLm9yZz7CwY0EEwEIADcWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCaKYhwAIbAwUJJlgIpAILCQQVCgkIAhYCAh4FAheAAAoJEE3eEPcA/4Naa5EP/3a1 9sgS9m7oiR0uenlj+C6kkIKlpWKRfGH/WvtFaHr/y06TKnWn6cMOZzJQ+8S39GOteyCCGADh 6ceBx1KPf6/AvMktnGETDTqZ0N9roR4/aEPSMt8kHu/GKR3gtPwzfosX2NgqXNmA7ErU4puf zica1DAmTvx44LOYjvBV24JQG99bZ5Bm2gTDjGXV15/X159CpS6Tc2e3KvYfnfRvezD+alhF XIym8OvvGMeo97BCHpX88pHVIfBg2g2JogR6f0PAJtHGYz6M/9YMxyUShJfo0Df1SOMAbU1Q Op0Ij4PlFCC64rovjH38ly0xfRZH37DZs6kP0jOj4QdExdaXcTILKJFIB3wWXWsqLbtJVgjR YhOrPokd6mDA3gAque7481KkpKM4JraOEELg8pF6eRb3KcAwPRekvf/nYVIbOVyT9lXD5mJn IZUY0LwZsFN0YhGhQJ8xronZy0A59faGBMuVnVb3oy2S0fO1y/r53IeUDTF1wCYF+fM5zo14 5L8mE1GsDJ7FNLj5eSDu/qdZIKqzfY0/l0SAUAAt5yYYejKuii4kfTyLDF/j4LyYZD1QzxLC MjQl36IEcmDTMznLf0/JvCHlxTYZsF0OjWWj1ATRMk41/Q+PX07XQlRCRcE13a8neEz3F6we 08oWh2DnC4AXKbP+kuD9ZP6+5+x1H1zEzsFNBFXLn5EBEADn1959INH2cwYJv0tsxf5MUCgh Cj/CA/lc/LMthqQ773gauB9mN+F1rE9cyyXb6jyOGn+GUjMbnq1o121Vm0+neKHUCBtHyseB fDXHA6m4B3mUTWo13nid0e4AM71r0DS8+KYh6zvweLX/LL5kQS9GQeT+QNroXcC1NzWbitts 6TZ+IrPOwT1hfB4WNC+X2n4AzDqp3+ILiVST2DT4VBc11Gz6jijpC/KI5Al8ZDhRwG47LUiu Qmt3yqrmN63V9wzaPhC+xbwIsNZlLUvuRnmBPkTJwwrFRZvwu5GPHNndBjVpAfaSTOfppyKB Tccu2AXJXWAE1Xjh6GOC8mlFjZwLxWFqdPHR1n2aPVgoiTLk34LR/bXO+e0GpzFXT7enwyvF FFyAS0Nk1q/7EChPcbRbhJqEBpRNZemxmg55zC3GLvgLKd5A09MOM2BrMea+l0FUR+PuTenh 2YmnmLRTro6eZ/qYwWkCu8FFIw4pT0OUDMyLgi+GI1aMpVogTZJ70FgV0pUAlpmrzk/bLbRk F3TwgucpyPtcpmQtTkWSgDS50QG9DR/1As3LLLcNkwJBZzBG6PWbvcOyrwMQUF1nl4SSPV0L LH63+BrrHasfJzxKXzqgrW28CTAE2x8qi7e/6M/+XXhrsMYG+uaViM7n2je3qKe7ofum3s4v q7oFCPsOgwARAQABwsF8BBgBCAAmAhsMFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAmic2qsF CSZYCKEACgkQTd4Q9wD/g1oq0xAAsAnw/OmsERdtdwRfAMpC74/++2wh9RvVQ0x8xXvoGJwZ rk0Jmck1ABIM//5sWDo7eDHk1uEcc95pbP9XGU6ZgeiQeh06+0vRYILwDk8Q/y06TrTb1n4n 7FRwyskKU1UWnNW86lvWUJuGPABXjrkfL41RJttSJHF3M1C0u2BnM5VnDuPFQKzhRRktBMK4 GkWBvXlsHFhn8Ev0xvPE/G99RAg9ufNAxyq2lSzbUIwrY918KHlziBKwNyLoPn9kgHD3hRBa Yakz87WKUZd17ZnPMZiXriCWZxwPx7zs6cSAqcfcVucmdPiIlyG1K/HIk2LX63T6oO2Libzz 7/0i4+oIpvpK2X6zZ2cu0k2uNcEYm2xAb+xGmqwnPnHX/ac8lJEyzH3lh+pt2slI4VcPNnz+ vzYeBAS1S+VJc1pcJr3l7PRSQ4bv5sObZvezRdqEFB4tUIfSbDdEBCCvvEMBgoisDB8ceYxO cFAM8nBWrEmNU2vvIGJzjJ/NVYYIY0TgOc5bS9wh6jKHL2+chrfDW5neLJjY2x3snF8q7U9G EIbBfNHDlOV8SyhEjtX0DyKxQKioTYPOHcW9gdV5fhSz5tEv+ipqt4kIgWqBgzK8ePtDTqRM qZq457g1/SXSoSQi4jN+gsneqvlTJdzaEu1bJP0iv6ViVf15+qHuY5iojCz8fa0= In-Reply-To: <5ed94c8a-35ac-4635-aeac-3fe72d4f9c8e@lucifer.local> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: htdmxmybtqunq6ryzdwub18ethpkphxs X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 9B66112000B X-HE-Tag: 1768862696-265465 X-HE-Meta: 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 UzzAGPUV 0b8H64SJKkhnfT/0rhctipgIR5Zk63gKkWBdLkNR3bgCuDiny1s9ZuSgjSRU/xUqyPkQP+LWgRfENDmDU2ph+vKx81mtSsREf3X8QUp8JYdfW+K+ugbdEil0heeGgLrERn2YeYNOurGaN1ERPRP6fRcAkT7ZvlKlLlkJUWx56psvutFVdYnioEWNvYgrfPR4LRivjELYKII3yX0n5tMF6dlcbc3vdDF9axdFfJIMVXzqqto1vsE/i9hXP8Hks8n3wxunz3S2Hnp+d3S+hW+y8Ho14ypKxcB8xf4018ApyOQYFim8pEzQsqEIm+A== 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: >> @@ -573,11 +567,12 @@ static int cmm_init(void) >> return -EOPNOTSUPP; >> >> balloon_devinfo_init(&b_dev_info); >> - cmm_balloon_compaction_init(); >> + if (IS_ENABLED(CONFIG_BALLOON_COMPACTION)) >> + b_dev_info.migratepage = cmm_migratepage; >> >> rc = register_oom_notifier(&cmm_oom_nb); >> if (rc < 0) >> - goto out_balloon_compaction; >> + return rc; >> >> if ((rc = register_reboot_notifier(&cmm_reboot_nb))) >> goto out_oom_notifier; >> @@ -606,7 +601,6 @@ static int cmm_init(void) >> unregister_reboot_notifier(&cmm_reboot_nb); >> out_oom_notifier: >> unregister_oom_notifier(&cmm_oom_nb); >> -out_balloon_compaction: > > So silly, I assume before there was more that happened here? Right, I commented that above in the patch description. Thanks! -- Cheers David