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GET /api/patches/2202537/?format=api
{ "id": 2202537, "url": "http://patchwork.ozlabs.org/api/patches/2202537/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260227200848.114019-17-david@kernel.org/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260227200848.114019-17-david@kernel.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260227200848.114019-17-david@kernel.org/", "date": "2026-02-27T20:08:47", "name": "[v1,16/16] mm/memory: support VM_MIXEDMAP in zap_special_vma_range()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "a630ff7f778f013899adf4265e8a98182c5d24ae", "submitter": { "id": 92023, "url": "http://patchwork.ozlabs.org/api/people/92023/?format=api", "name": "David Hildenbrand (Arm)", "email": "david@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260227200848.114019-17-david@kernel.org/mbox/", "series": [ { "id": 493807, "url": "http://patchwork.ozlabs.org/api/series/493807/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=493807", "date": "2026-02-27T20:08:31", "name": "mm: cleanups around unmapping / zapping", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/493807/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2202537/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2202537/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-17424-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=BsV4ULrX;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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Sat, 28 Feb 2026 07:13:34 +1100 (AEDT)", "from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fMzzf4MbNz3bsC;\n\tSat, 28 Feb 2026 07:13:34 +1100 (AEDT)", "from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4fMzzd5k0Sz3bkL\n\tfor <linuxppc-dev@lists.ozlabs.org>; Sat, 28 Feb 2026 07:13:33 +1100 (AEDT)", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby sea.source.kernel.org (Postfix) with ESMTP id 36CC9401C0;\n\tFri, 27 Feb 2026 20:13:32 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id 2C5BFC116C6;\n\tFri, 27 Feb 2026 20:13:15 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1772223214;\n\tcv=none;\n b=EWjlaUFdGWLheA2aNQzGd6KRUl9L2lNhoB/Vj2MR7J0PCMt3wEVfKk4QX1YUINZjX133qjZcFvJkf4yLrKQASZGZzjGpiudVVTnv85woQsY+ZznmCQoZrRGXtVpRN2lOWBSKORDLK3N8/33H3WENz9qoAyMSprEi5uopAbNn3OwKa6Xwx1znDeNqI2sHajcshUqZhgNEwrcilRrOI9hmaVxdLeaQhEoHqgsO8M4UIJ4pZWetJgMiOPjWk3KvrS/R0wiJHJDc1izZ/7uvFLnRI8IZbiqLgh0+nhhmQEVMHzJWkE32E/6rOvydkbhdIUru3vaRsdcwqA1dfxhYDdPtNg==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1772223214; c=relaxed/relaxed;\n\tbh=wRXSC4+iBXa4TW3ukLrtyEiHYn2JRmCbRPucTWT87Iw=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version;\n b=ciFV5gIQSab+76s1xdnM8wSmXN1T6hAYzLV6Houjtj6WlB9S/6xSkUfHJxunWfXad4GVrVOt9yfs3HJLdzjy0s+fODUZOyTR42e4CICRl09CXGA6jKcPPJxflPFTt0mp9BoG32ZUt2HUMlPTbo3Cg0+Rhe7We3+6TswJfa2GHdMrgo7TNMw61E8IO8g3vp8fG4z+B0+EigTBtpNs5YLfCZjh3cezBGoCZ8WztVWBDPfnAvAcInPi1U0Hu7j1CCRXCBXrMRROzjytVCya280V5GQHmTK1aEQ51byHZ5KG1+WUbzUIsWZjL0ASDFGsUdFG/xhICnJ3bch0LYnwJYx/uw==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=quarantine dis=none) header.from=kernel.org;\n dkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=BsV4ULrX; dkim-atps=neutral;\n spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org;\n envelope-from=david@kernel.org;\n receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1772223212;\n\tbh=8DjODQ9JTo8rNPBCTFGX0cqEx7ur/z2XYX0+HQB8juc=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=BsV4ULrXcf69csyHSuGqVHkErg/TmBz0CXhzBZuPFMOJEd58YYsV9GY3LYfW2rxUB\n\t B/Bd+jNerrYiWu/dHQ4j9aEcpp/k/BLY3TOUIcBEDZazpW4Qb1rlsg807wAQftoetu\n\t oKHzBMSDxjv/CxuvG+QWIc4cPfrDOfwX0D5SZxDFnYn2LED/gYiKa1XwK/OgvUaDiQ\n\t wgo5tEx/CUq90wHpk0NTCoqjaz2e0NS8iGFwY2Tc6jUxOCGeEWKQQpTGNJBMzS+gGd\n\t d3N1RDyJOeuPtak0u7xYeGcKnNxHOOxKOC4LpkDRwUfoXIisyM7oV5jLZ/g+BGM9tD\n\t tmtukJMtnncfA==", "From": "\"David Hildenbrand (Arm)\" <david@kernel.org>", "To": "linux-kernel@vger.kernel.org", "Cc": "\"linux-mm @ kvack . org\" <linux-mm@kvack.org>,\n \"David Hildenbrand (Arm)\" <david@kernel.org>,\n Andrew Morton <akpm@linux-foundation.org>,\n Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,\n \"Liam R. Howlett\" <Liam.Howlett@oracle.com>,\n Vlastimil Babka <vbabka@kernel.org>, Mike Rapoport <rppt@kernel.org>,\n Suren Baghdasaryan <surenb@google.com>, Michal Hocko <mhocko@suse.com>,\n Jann Horn <jannh@google.com>, Pedro Falcato <pfalcato@suse.de>,\n David Rientjes <rientjes@google.com>, Shakeel Butt <shakeel.butt@linux.dev>,\n \"Matthew Wilcox (Oracle)\" <willy@infradead.org>,\n Alice Ryhl <aliceryhl@google.com>, Madhavan Srinivasan <maddy@linux.ibm.com>,\n Michael Ellerman <mpe@ellerman.id.au>,\n Christian Borntraeger <borntraeger@linux.ibm.com>,\n Janosch Frank <frankja@linux.ibm.com>,\n Claudio Imbrenda <imbrenda@linux.ibm.com>,\n Alexander Gordeev <agordeev@linux.ibm.com>,\n Gerald Schaefer <gerald.schaefer@linux.ibm.com>,\n Heiko Carstens <hca@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>,\n Jarkko Sakkinen <jarkko@kernel.org>, Thomas Gleixner <tglx@kernel.org>,\n Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,\n Greg Kroah-Hartman <gregkh@linuxfoundation.org>, =?utf-8?q?Arve_Hj=C3=B8nne?=\n\t=?utf-8?q?v=C3=A5g?= <arve@android.com>, Todd Kjos <tkjos@android.com>,\n Christian Brauner <brauner@kernel.org>, Carlos Llamas <cmllamas@google.com>,\n Ian Abbott <abbotti@mev.co.uk>,\n H Hartley Sweeten <hsweeten@visionengravers.com>,\n Jani Nikula <jani.nikula@linux.intel.com>,\n Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,\n Rodrigo Vivi <rodrigo.vivi@intel.com>, Tvrtko Ursulin <tursulin@ursulin.net>,\n David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,\n Jason Gunthorpe <jgg@ziepe.ca>, Leon Romanovsky <leon@kernel.org>,\n Dimitri Sivanich <dimitri.sivanich@hpe.com>, Arnd Bergmann <arnd@arndb.de>,\n Alexei Starovoitov <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>,\n Andrii Nakryiko <andrii@kernel.org>, Peter Zijlstra <peterz@infradead.org>,\n Arnaldo Carvalho de Melo <acme@kernel.org>,\n Namhyung Kim <namhyung@kernel.org>, Andy Lutomirski <luto@kernel.org>,\n Vincenzo Frascino <vincenzo.frascino@arm.com>,\n Eric Dumazet <edumazet@google.com>, Neal Cardwell <ncardwell@google.com>,\n \"David S. Miller\" <davem@davemloft.net>, David Ahern <dsahern@kernel.org>,\n Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,\n Miguel Ojeda <ojeda@kernel.org>, linuxppc-dev@lists.ozlabs.org,\n kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-sgx@vger.kernel.org,\n intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,\n linux-rdma@vger.kernel.org, bpf@vger.kernel.org,\n linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,\n netdev@vger.kernel.org, rust-for-linux@vger.kernel.org, x86@kernel.org", "Subject": "[PATCH v1 16/16] mm/memory: support VM_MIXEDMAP in\n zap_special_vma_range()", "Date": "Fri, 27 Feb 2026 21:08:47 +0100", "Message-ID": "<20260227200848.114019-17-david@kernel.org>", "X-Mailer": "git-send-email 2.43.0", "In-Reply-To": "<20260227200848.114019-1-david@kernel.org>", "References": "<20260227200848.114019-1-david@kernel.org>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "There is demand for also zapping page table entries by drivers in\nVM_MIXEDMAP VMAs[1].\n\nNothing really speaks against supporting VM_MIXEDMAP for driver use. We\njust don't want arbitrary drivers to zap in ordinary (non-special) VMAs.\n\n[1] https://lore.kernel.org/r/aYSKyr7StGpGKNqW@google.com\n\nSigned-off-by: David Hildenbrand (Arm) <david@kernel.org>\n---\n mm/memory.c | 4 ++--\n 1 file changed, 2 insertions(+), 2 deletions(-)", "diff": "diff --git a/mm/memory.c b/mm/memory.c\nindex f3b7b7e16138..3fe30dc2f179 100644\n--- a/mm/memory.c\n+++ b/mm/memory.c\n@@ -2239,13 +2239,13 @@ void zap_vma_range(struct vm_area_struct *vma, unsigned long address,\n * @size: number of bytes to zap\n *\n * This function does nothing when the provided address range is not fully\n- * contained in @vma, or when the @vma is not VM_PFNMAP.\n+ * contained in @vma, or when the @vma is not VM_PFNMAP or VM_MIXEDMAP.\n */\n void zap_special_vma_range(struct vm_area_struct *vma, unsigned long address,\n \t\tunsigned long size)\n {\n \tif (!range_in_vma(vma, address, address + size) ||\n-\t \t\t!(vma->vm_flags & VM_PFNMAP))\n+\t !(vma->vm_flags & (VM_PFNMAP | VM_MIXEDMAP)))\n \t\treturn;\n \n \tzap_vma_range(vma, address, size);\n", "prefixes": [ "v1", "16/16" ] }