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 EA0E3D4116C for ; Thu, 15 Jan 2026 11:26:45 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 5DCEC6B0089; Thu, 15 Jan 2026 06:26:45 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 5B44E6B008A; Thu, 15 Jan 2026 06:26:45 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 48C6A6B008C; Thu, 15 Jan 2026 06:26:45 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 37AB26B0089 for ; Thu, 15 Jan 2026 06:26:45 -0500 (EST) Received: from smtpin07.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id F22B41ADDE5 for ; Thu, 15 Jan 2026 11:26:44 +0000 (UTC) X-FDA: 84333970728.07.B18D08A Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf15.hostedemail.com (Postfix) with ESMTP id 4FE77A0003 for ; Thu, 15 Jan 2026 11:26:43 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=s8PhOPdL; spf=pass (imf15.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1768476403; 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=IJYsJTAfX8ak5eFccaPzLwiDeE5hKxgiVmqJGYwFjlM=; b=S5Y6Ax2B04BLvKINShqjJ5s0UbcHBeSgPmSpPkc9EDEdVrnfTLuIy30P+gXvQ05FRxNtu9 DccodxL4xUpYUniKtEaWHhL0eEZHkXNmjvUKnXlUYV5k6JtXaEqM3xCACNL+unkP/J8xNS xtqaHHcJHAZ2dViEOzlmMMDQFv+WP4I= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=s8PhOPdL; spf=pass (imf15.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1768476403; a=rsa-sha256; cv=none; b=nYiRv1uTCiBCVqU6ZqcUGEV6G4Mgp2c6k35kvLBcHYszNTDhtHmnsAYOXXU86+0keu6cCR eSaEhOnkoo/FHNLICl92OsKy+HmrjOXrz2uRU1QjXDBbEfYo3tetudVx4ieHB4GvfnG3tC eIjd+AFUcscrTk+LARvh/TZ52IL2v6k= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 9D28E601B4; Thu, 15 Jan 2026 11:26:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 223E7C116D0; Thu, 15 Jan 2026 11:26:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768476402; bh=uGIn0uiB7IcuN9gqtjkvIgCdXPQNjB5DOqHCWisIo6A=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=s8PhOPdLs2iDhxXBCFmEZSONVJsxDi7MeVITCsSMpo+fJN8cdm17AFt3IXqxGBp2+ p/ZVHOIhlKg6YPifaA0nbHKTIscyRaQUkchFXGcsekQmiKbAHNck+qYgd0+ohuVhT1 RCxITTx3qUgVwpVFqakzsWdkeiENwAHLLQ2LXs/8K60+1qam6wuEy+bDrFsPzbmcvT PK501aOwFucfHPiOCvqB+6yIgXhrr1K0OMqqf+DTS2Xuqco8osOpniacO6UE7KtUMX hwI4QvvL0kKZI+OqCit/SluptX3dOv0hIHU6TcfP8Kq0N6q1GQMoVJiBbIPFYGvQOY l63cXyljrKIWg== Message-ID: Date: Thu, 15 Jan 2026 12:26:34 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 00/23] mm: balloon infrastructure cleanups To: "Michael S. Tsirkin" 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 , Lorenzo Stoakes , "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 , Jason Wang , Xuan Zhuo , =?UTF-8?Q?Eugenio_P=C3=A9rez?= , Zi Yan References: <20260115092015.3928975-1-david@kernel.org> <20260115043240-mutt-send-email-mst@kernel.org> 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: <20260115043240-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 4FE77A0003 X-Stat-Signature: ymo8ndx9en34dgwt65b6bp7f7gti7icf X-HE-Tag: 1768476403-242288 X-HE-Meta: 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 QP3LCnqq d0+zlexwJHsz7TifjBmDDjCAYcclr/D1GoiKbMuJ1ISZ/nf9ERyFoI89MzYemWF5CAS57vuypk75NnH89o2A3yGouzbWoqgKd+VkfmAVL3BtGCdBZ5SuPwKgiFuXHWXNm6F5I9zTVVrXhpXGuH9Fo0l68s6qOeY48zcSh7JUtifm4i6iMUTL431YaupFiGBUIHsesmtsaooDNAblrmmkfmORz0of/96M+RvWmeliArgODpifIKoes/yL+xBTI7ief4CE1eq2Dn5KwC0fNrfnXdSAhTQ== 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 1/15/26 10:32, Michael S. Tsirkin wrote: > On Thu, Jan 15, 2026 at 10:19:50AM +0100, David Hildenbrand (Red Hat) wrote: >> I started with wanting to remove the dependency of the balloon >> infrastructure on the page lock, but ended up performing various other >> cleanups, some of which I had on my todo list for years. >> >> This series heavily cleans up and simplifies our balloon infrastructure, >> including our balloon page migration functionality. >> >> With this series, we no longer make use of the page lock for PageOffline >> pages as part of the balloon infrastructure (preparing for memdescs >> where PageOffline pages won't have any such lock), and simplifies >> migration handling such that refcounting can more easily be adjusted >> later (long-term focus is for PageOffline pages to not have a refcount >> either). >> >> Plenty of related cleanups. >> >> Heavily compile-tested and heavily runtime-tested with virtio-balloon. >> PPC CMM and the VMware balloon are untested and I'd appreciate a helping >> hand from people that have suitable environments. >> >> Not CCing maintainers for the vmscan.c and migrate.c change as they >> are rather trivial and I don't want to patchbomb them. > > besides MAINTAINERS thing: > > Acked-by: Michael S. Tsirkin Thanks! -- Cheers David