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 BD649D4117D for ; Thu, 15 Jan 2026 12:26:39 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 340CA6B008A; Thu, 15 Jan 2026 07:26:39 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2EB286B008C; Thu, 15 Jan 2026 07:26:39 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 1EDFD6B0092; Thu, 15 Jan 2026 07:26:39 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 117FB6B008A for ; Thu, 15 Jan 2026 07:26:39 -0500 (EST) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id DA34A1B7DD for ; Thu, 15 Jan 2026 12:26:38 +0000 (UTC) X-FDA: 84334121676.05.4E74BE1 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf22.hostedemail.com (Postfix) with ESMTP id 0BAB9C0005 for ; Thu, 15 Jan 2026 12:26:36 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Krsrrt2T; spf=pass (imf22.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 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=1768479997; 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=9pwTSCb9mZ62hOpkpEAWZHglZeqde3vTa2IV6UY5uN0=; b=VxeSOVviEAmQ/Jt0kKFNnsKrWQ6Uc6sKADflJpCvJ6aHroRcdy26pHnaQhA/Gj88Uu6wCd Srm08eIZ7aI9qULTvfIEkH2DhzVClrQ/f4eb4R0OGTtzn7zuBKM1+k9zQRjViHO/wNL/m7 4grsRUalrJ9NYbvarSMIbIrajrMFSaU= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Krsrrt2T; spf=pass (imf22.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 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=1768479997; a=rsa-sha256; cv=none; b=tb83UT9mGoTKsLRpNPw7Q0l5MXGpkVqUuQjx3900MXWvFShAsI+vItykhft4w8bG4cgfXJ 7gfxFs7JjMCm3S+oNctfoweJGWjtfv6Hedvgj3brDf4GcWumm4J1QVEmnPa3sD0Or8Ia6l HWjtgymaFVVj6uMN07w7faDhknvrAJM= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id BD77F40C11; Thu, 15 Jan 2026 12:26:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61A6CC116D0; Thu, 15 Jan 2026 12:26:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768479995; bh=X8/pCAs66ggv6ENS8H26d1g/G25IXDu4xUO0dYzXMws=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Krsrrt2TKqKr/2bkYcwqpeaCU8oYMKKaaYd/Dtrr67u9JchOjn6yTM2GXM8+/CtZP n4umKPSRWS1jliRAeNF0S1JdXjFFXFdyais30WLQVd52q5ayGaxK9ThquHkdLZfOax TlTjBVbcdlOGV64erSorrMg01SrF47Dr1ihRndXB6HVaOikgWXeLN7nMUVqw99ycaG ZMiFwYWnWUfOIkYvzrYbsT8MvXkhXG188vmsOYzhtYCjhIkgX3J+vpvMY/Gz/GOck5 uMrzvlTMRS6pjbuBSUpR9X3uqD0Ztsy7pmrVFm0naI7pBJoM+VSNo1ECsHRAbyT0ap EzNYV00SKXuxQ== Message-ID: <274eb8e9-88da-41cb-bf77-9571f05b81fb@kernel.org> Date: Thu, 15 Jan 2026 13:26:27 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 06/23] vmw_balloon: stop using the balloon_dev_info lock 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> <20260115092015.3928975-7-david@kernel.org> <689941ab-696b-43d5-b14e-5cf2c8639861@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: <689941ab-696b-43d5-b14e-5cf2c8639861@lucifer.local> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: x7i5hwu7dp5mxyg6dpzj15dwzc75iwqq X-Rspam-User: X-Rspamd-Queue-Id: 0BAB9C0005 X-Rspamd-Server: rspam08 X-HE-Tag: 1768479996-809054 X-HE-Meta: U2FsdGVkX1/oGjUXeJ1dK6YTt5PJANtGqkki7bGAHtFC2mTnfN0/NLRbO8bWjERZnentXuMQDLTPGvQjhzg976SHGevWQpcJq37iUaWIHFEjt8omQ6BnfmDXfVOAdjoRMfTahhtYClhTRcKSl64v+HSOMi6i4MR1yVaKNnydcZCOr34DFiM+rnDt9Dm+F5OeKBir6R8yWbVcL91rQ3E1bxD3BUNisdmdZ36Xvq5fQ4j2IAJQsomm0F8+F0CD49mvXgZofUZ7p0Je863Ffwfpootw/kJK4W+eeeCyw9GdU/o30+SK8Z7relsBMIM0EADc6EF2+yxCQWFOOLAaQPaduEFXz9H8MXdfld9UDFbvLHfIWaQLE14l9BkrbkktMBNkX0WSpaQNW9PDbH3FKq16BLGp8DIGKRwVfBU1hwackYqnAk/+4z1xqd9ZzrpOa/hAofEDQ8l6oSRM7dK7AkDCs2B0bsPmfXEPLYKvnOt/OPvmwR0eemCcYadBMCnvZkSHsP1l0a83Gusr4TV8ohpwJOk/QW7VW/Az5nkGL/3y9QZpfAdBNqDoqCir9d9kNge/N4Q+tINQI0nXjXPu+RF/9JH02NBd/5CzE34PupCow/3HqjjlqYYL5GHoqtqIdSSJuMZ4sDnrrMm86o7bGffSMa97H+5EYqrq5oDlP04PphmKxbakmyyK7Mmmpa+hqeLElfHGbNopsXZcJVdR7wZOjOsu4w9eRfKHkalw3IXqwoO3Hqp+QRY/XQgh/rfuCtQDqLaCAP4AnZ89kV6sHR1NFX6n50hdwPNDQZMei1KCDDW16tNgIT5t6qyKiw2trzbgeGJcWN7jibXlX//Oj7lRvs4WaKPZHJSVHLyz5TmYuSitGozqSVUyX5wIAiCxBkLmUBp6Lmwbcip27nVhrl4eHh1JLSVhYu2X9EeFKiciIoEKBjuVi6PUFdChqmNPWuDQqclQJQJa93hQZTRR6Ig 8HOg2GKv Dnh6TCLbv1PXaYzWFR3vv/7XkELmK3E7Lv/in7P1vDo8KXlbMyC6r83v0hFn7E+oB6yzPQ5G7aEYTm9WZ+VLXya7lJQqvun9mGtOwa1YEbU5DimA7wv7u4uLhughMFnPtYjPr6YdiKmFGs6t7VU0xTOempK6y/sy3TT5iJQ/aVLjTwyjqRclM1IAllVgvvi+bvg/HnQEbdpgOcJzRj2+BTlo3kKcD+FfHHunQWbRBPy18YKeWiFBOx5BgS6V4KXSKy2qp3z5w7Wk1fv3yqejTsEInKqRwnCJqNC+Ei+uTGntGKYL73iMrCiK7A3D1cc/Fi8HHqB9X3ReiXMc= 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 13:21, Lorenzo Stoakes wrote: > On Thu, Jan 15, 2026 at 10:19:56AM +0100, David Hildenbrand (Red Hat) wrote: >> Let's not piggy-back on the existing lock and use a separate lock for the >> huge page list. Now that we use a separate lock, there is no need to >> disable interrupts, so use the non-irqsave variants. > > Why can we avoid disabling interrupts in this case? It's a leftover from using the old lock that required this. Thanks! -- Cheers David