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 650F4D1CDC6 for ; Tue, 9 Dec 2025 08:18:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 67B8F6B0005; Tue, 9 Dec 2025 03:18:58 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 605166B0007; Tue, 9 Dec 2025 03:18:58 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4CC846B0008; Tue, 9 Dec 2025 03:18:58 -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 374086B0005 for ; Tue, 9 Dec 2025 03:18:58 -0500 (EST) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay05.hostedemail.com (Postfix) with ESMTP id D08C358F56 for ; Tue, 9 Dec 2025 08:18:57 +0000 (UTC) X-FDA: 84199231914.04.9648523 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf12.hostedemail.com (Postfix) with ESMTP id 4025B40003 for ; Tue, 9 Dec 2025 08:18:56 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=J+aaFS9D; spf=pass (imf12.hostedemail.com: domain of pratyush@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=pratyush@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=1765268336; 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=aL/hwR8PIWPLlV6uFQBsf2fAQbPmjSBfIHKkmx7HAzw=; b=LO2d5j6JoDZNqHkIec/uVRTwCY1tOT5m8pR/+lEeeT3yDT1gFUlEQi6xTaBf06FBy1dCN7 zK//dHIVUmB2MF4timvTJdER17YL5YCMWa8Dbyi5T33Akfm8JyJryYT9DFySd1vmOTXWJY Z+bT5gWqbcBPo6fuavaysQzbmvJip74= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=J+aaFS9D; spf=pass (imf12.hostedemail.com: domain of pratyush@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=pratyush@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1765268336; a=rsa-sha256; cv=none; b=a2w7/xrCZ1ykvW1JtQ0aknzADyp7BeXXf/7rv+x+p7AH2ruzIN/qcVyZJifCFNr4FHz1ZS ZI4iTDrSTIDIq+p4JbKaXpbOFmkiIO51X3leo6fGXYoOOXgn+nLT4ovFDwLrlITz8oylqO 048pPhcldXU3WSRpT6fOEl2gUFnY75M= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 414CB40408; Tue, 9 Dec 2025 08:18:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66519C4CEF5; Tue, 9 Dec 2025 08:18:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1765268335; bh=aL/hwR8PIWPLlV6uFQBsf2fAQbPmjSBfIHKkmx7HAzw=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=J+aaFS9DJjhtBzUXMwjiV1dTctAzbSTgd+qhpLMl5+L/KZvE8jsx3AyT07Pl72FmX DBXpTNDIbkr0ESOZCipm+oEipaq4Us8aDhRUR89KNBqA+0HaL+Rx/ENO3lxV6x8fuW zptCYOGL5rXnmjGw26F1L16Wwp931gY+IQ6hg2bslYXpzSAJ9LgoTsnFgsw9jq78ry 1BCC+EnCrO8RFAZGdvmCba4sJVIpSvxSVnHIHT/MVh7fJqJYfQHh7ASXPxCpKc5FTR 5B5vOjVS8NOEHgGq2/S31MnHy6yDdyNJoBZTN7PXj7Rf8Rl7DtrXCXmUHKkDB38QiT z81VvUd0S+h+A== From: Pratyush Yadav To: Zhu Yanjun Cc: Pratyush Yadav , Pasha Tatashin , Mike Rapoport , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Muchun Song , Oscar Salvador , Alexander Graf , David Matlack , David Rientjes , Jason Gunthorpe , Samiullah Khawaja , Vipin Sharma , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, kexec@lists.infradead.org Subject: Re: [RFC PATCH 00/10] liveupdate: hugetlb support In-Reply-To: <48d0b46e-2b82-44b6-a717-94bc258a508d@linux.dev> (Zhu Yanjun's message of "Mon, 8 Dec 2025 20:43:22 -0800") References: <20251206230222.853493-1-pratyush@kernel.org> <48d0b46e-2b82-44b6-a717-94bc258a508d@linux.dev> Date: Tue, 09 Dec 2025 09:18:45 +0100 Message-ID: <86h5u0ax0a.fsf@kernel.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Stat-Signature: r6dq5oyfkt4mk19qxyp3cq1j6a8mpefz X-Rspamd-Queue-Id: 4025B40003 X-Rspam-User: X-Rspamd-Server: rspam09 X-HE-Tag: 1765268336-900256 X-HE-Meta: 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 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: Hi, On Mon, Dec 08 2025, Zhu Yanjun wrote: > =E5=9C=A8 2025/12/6 15:02, Pratyush Yadav =E5=86=99=E9=81=93: >> This series adds support for live updating hugetlb-backed memfd, >> including support for 1G huge pages. This allows live updating VMs which >> use hugepages to back VM memory. >> >> Please take a look at this patch series [0] to know more about the Live >> Update Orchestrator (LUO). It also includes patches for live updating a >> shmem-backed memfd. This series is a follow up to that, adding huge page >> support as well. >> >> You can also read this LWN article [1] to learn more about KHO and Live >> Update Orchestrator, though do note that this article is a bit >> out-of-date. LUO has since evolved. For example, subsystems have been >> replaced with FLB, and the state machine has been simplified. >> >> This series is based on top of mm-non-unstable, which includes the LUO >> FLB patches [2]. >> >> This series uses LUO FLB to track how many pages are preserved for each >> hstate, to ensure the live updated kernel does not over-allocate >> hugepages. > > > Is this patch serise based on the patches in the link > https://lkml.org/lkml/2025/11/26/1665? No. That is an independent series. This series is based on mm-nonmm-unstable, which has the base LUO patches and the LUO FLB patches, but not the VFIO or IOMMU patches. [...] --=20 Regards, Pratyush Yadav