From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f179.google.com (mail-qk1-f179.google.com [209.85.222.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 451D5430CE3 for ; Mon, 20 Jul 2026 19:35:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.179 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784576108; cv=none; b=kVsjE4ssrB69j1xWoese3ojSSmdyj5Lro1ahudgJ61nuHVOTHDbOhdkisi1fxcpdDmS/Ncm2bh7QXKN+Ih4+i86XEGR6vdWhlBCfpFRGCvonNuU54HQSUTKKtUCGsEiYuo84GqYaZRnb7T2RurFYP5oElAqfz5dfALxWyHJxLWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784576108; c=relaxed/simple; bh=oEaRFOVCjSclinhDXeejGJ2Wds4vhFfHEOBs8ywWypA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RS9nEDH/tYqlWUZLZJsja0j+kXFQQhmtgYCr4fP1JPpA6ZAcZFACpREHQpF2SU0RH7VaYFQL308FOM2P5K7tDzmPbRJLqA+IYJoWXO9ZVAAXtJWir9Dw/Pddj4NWdcpdG7dRoB3MYCfqi2p/SnzNS8pH2I2MvgQ1+AsXUhcBp6g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net; spf=pass smtp.mailfrom=gourry.net; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b=tY2u+0DG; arc=none smtp.client-ip=209.85.222.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gourry.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b="tY2u+0DG" Received: by mail-qk1-f179.google.com with SMTP id af79cd13be357-92e50979c71so1168462885a.3 for ; Mon, 20 Jul 2026 12:35:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gourry.net; s=google; t=1784576104; x=1785180904; darn=lists.linux.dev; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=Ln8pgF9dZ6WMfDl05evHGvg0v2GxuZj6EnExRSfvexU=; b=tY2u+0DGhRoTXyvSiX+9IcUMidyobE5+ginNLxFcrueHuksd8gJZ8JtYF2hd0ptFWV 35ziYuHuGyt7y8Iu5QIXx4keup8PyI62etPc57j6H3+OQRaj5CZ+jtC2DImnVU0vCUKT nh+gsaP+HZq99YUvd0U63vR5SlZHTouFInmAAvydZZkAtnnLP/pF5nuTYBA3NG8oMyCl QJDp7N61RDeyDSrEjMCdwIf0aSN7njqCWMkf51BV+v6UfoqsJBfqYJMMFIxEQpbBFMJc Age/TDrr3OsMQw3mpT/JQeq8R9BCbBjNTeDaxu2PkTScB+nI9HCDGegjhL+4yx6eAz1j 459w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784576104; x=1785180904; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=Ln8pgF9dZ6WMfDl05evHGvg0v2GxuZj6EnExRSfvexU=; b=I6b4/OIT1Kov/eOEfdp73GN3SASh15RMx7SRy3JNp/9PUzyF12nOzNqGGSQzrECnoo 5eR6Do0X6fqoVHsF+p5JcqG6kx3ijtS9kCiN+P/ffAShdd+Mdz4woH09k5PEKtkNehRU e4ZigGCRXZWGrwvT9tZh6+Om9rUbZyenXfbWVODiA/YR1OwuAptCygQA6j6WmU8qw54h /R9s07P/5oe7JYu3SUX+fPMsNPrr7KUv4r6i8iaXaYP031dmtdb1sPwLi5BOwVOxCVyy QlWbOr0szegMl1KY9Lf07w8/01N28UWXilEnQ/TCpBZGQ8PHOe0UmkhfHOq/YNlDQ3Jz RhHg== X-Forwarded-Encrypted: i=1; AHgh+Rq6Z1yMrWOCQUf0afBnFmb9D+9orkIOYoD+k5A/c5mXVWsoa9QaK3JYYutNct5eSiGDigRDjNMUPCwsUw==@lists.linux.dev X-Gm-Message-State: AOJu0Yz7QJHuqjJ2jHsFxGxIpkbcTra/aYVLJ2/eeZcdPFjKxvaTDeyM xQM2NfjUO7HY2IjyOhvGL17ehbrf5ww6aJgmYfIq3Z61wq0r/qazn/nlNPs/FFT14Iw= X-Gm-Gg: AfdE7cmjsVhejqZH/2cS9afGG2sOFf6RAjvO29BdS7mOo+JdBsZxUCWQ18ROo7N95dW sU9E9ZhUdn2iIsf3v/B0pQwhX+b93JaaoLHEcyt7KkPM6ljn45Rz5L1S+JIAQ+i3qJTYRIZwIFx ByDQgl+cG70rIIbnFterVE5BfaBERfoWQiBQTaVDQjTl5KXL4No72LFVeHtk8rty1VXeiv4Elv9 ePDDGNT6KJGCpoMF78/vueMxOihPEQ0B9yqUrFD5xnGbJIjiVsRObipzCLnuUsnLfXTiGBulzzL 6wvB+3arabEnHSlVdd5qWAS7DoTW1wpI1dy1YpG9PsNcXrRaPsxEyOa9wOg3GRSUFFhzOzJEsQZ DWZBXxip2PU6fqgW8mXUYuz9ypbVXdQwDBmvSUNudQyWxGnfT1QztbFYJvwyvDWEivevX4+9bfl JsZn0QZLbbeS5ZsrAgUghhutjRbmDK0m16fOs2mflbgamE94rf+J3lPSY6SwCqDHE= X-Received: by 2002:a05:620a:45ac:b0:92e:c117:9eac with SMTP id af79cd13be357-930b43971a0mr1537518085a.90.1784576104470; Mon, 20 Jul 2026 12:35:04 -0700 (PDT) Received: from gourry-fedora-PF4VCD3F.lan (pool-173-79-60-52.washdc.fios.verizon.net. [173.79.60.52]) by smtp.gmail.com with ESMTPSA id af79cd13be357-930b545e47bsm957792285a.35.2026.07.20.12.35.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2026 12:35:04 -0700 (PDT) From: Gregory Price To: linux-mm@kvack.org Cc: Zhigang.Luo@amd.com, arun.george@samsung.com, balbirs@nvidia.com, brendan.jackman@linux.dev, yuzenghui@huawei.com, apopple@nvidia.com, alucerop@amd.com, matthew.brost@intel.com, akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, liam@infradead.org, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, corbet@lwn.net, skhan@linuxfoundation.org, gregkh@linuxfoundation.org, rafael@kernel.org, dakr@kernel.org, djbw@kernel.org, vishal.l.verma@intel.com, dave.jiang@intel.com, alison.schofield@intel.com, osandov@osandov.com, jannh@google.com, pfalcato@suse.de, jackmanb@google.com, hannes@cmpxchg.org, ziy@nvidia.com, pbonzini@redhat.com, osalvador@suse.de, joshua.hahnjy@gmail.com, rakie.kim@sk.com, byungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com, kasong@tencent.com, qi.zheng@linux.dev, shakeel.butt@linux.dev, baohua@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, yury.norov@gmail.com, linux@rasmusvillemoes.dk, longman@redhat.com, ridong.chen@linux.dev, tj@kernel.org, mkoutny@suse.com, sj@kernel.org, jgg@ziepe.ca, jhubbard@nvidia.com, peterx@redhat.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, lance.yang@linux.dev, usama.arif@linux.dev, xu.xin16@zte.com.cn, chengming.zhou@linux.dev, roman.gushchin@linux.dev, muchun.song@linux.dev, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, driver-core@lists.linux.dev, nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, linux-debuggers@vger.kernel.org, linux-fsdevel@vger.kernel.org, kvm@vger.kernel.org, cgroups@vger.kernel.org, damon@lists.linux.dev, linux-kselftest@vger.kernel.org, kernel-team@meta.com Subject: [PATCH v5 10/36] mm/madvise: disallow madvise operations on private node folios Date: Mon, 20 Jul 2026 15:34:04 -0400 Message-ID: <20260720193431.3841992-11-gourry@gourry.net> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260720193431.3841992-1-gourry@gourry.net> References: <20260720193431.3841992-1-gourry@gourry.net> Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use the same filter locations as zone_device, plus additional filters for huge pages to avoid madvise operations on private node memory. Signed-off-by: Gregory Price --- mm/huge_memory.c | 5 +++++ mm/madvise.c | 8 ++++++-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 5bd8d4f59a7b8..1df91b4e5c2bc 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include #include @@ -2338,6 +2339,10 @@ bool madvise_free_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma, } folio = pmd_folio(orig_pmd); + + if (folio_is_private_node(folio)) + goto out; + /* * If other processes are mapping this folio, we couldn't discard * the folio unless they all do MADV_FREE so let's skip the folio. diff --git a/mm/madvise.c b/mm/madvise.c index 07a21ca31bad4..29f35a23919a0 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -32,6 +32,7 @@ #include #include #include +#include #include @@ -395,6 +396,9 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd, folio = pmd_folio(orig_pmd); + if (folio_is_private_node(folio)) + goto huge_unlock; + /* Do not interfere with other mappings of this folio */ if (folio_maybe_mapped_shared(folio)) goto huge_unlock; @@ -474,7 +478,7 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd, continue; folio = vm_normal_folio(vma, addr, ptent); - if (!folio || folio_is_zone_device(folio)) + if (!folio || folio_is_private_managed(folio)) continue; /* @@ -703,7 +707,7 @@ static int madvise_free_pte_range(pmd_t *pmd, unsigned long addr, } folio = vm_normal_folio(vma, addr, ptent); - if (!folio || folio_is_zone_device(folio)) + if (!folio || folio_is_private_managed(folio)) continue; /* -- 2.53.0-Meta