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 99482E63C82 for ; Sun, 25 Jan 2026 04:03:35 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B9EE86B00B5; Sat, 24 Jan 2026 23:03:34 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B4C466B00B6; Sat, 24 Jan 2026 23:03:34 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A58516B00B7; Sat, 24 Jan 2026 23:03:34 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 91D446B00B5 for ; Sat, 24 Jan 2026 23:03:34 -0500 (EST) Received: from smtpin12.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 31CD91A015E for ; Sun, 25 Jan 2026 04:03:34 +0000 (UTC) X-FDA: 84369141948.12.9D9CB7D Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf22.hostedemail.com (Postfix) with ESMTP id 44077C0007 for ; Sun, 25 Jan 2026 04:03:32 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=OJslFK39; spf=pass (imf22.hostedemail.com: domain of chenhuacai@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=chenhuacai@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=1769313812; 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=0tCFI7iXfi62K2wdlW62C/79w8m8oGv0lT1eed2oJUM=; b=wyqGJ6kCyETibf0b8LcFmUVoucFBPYSDcl82+cm8MO/H+kEeoiuqSXo1MB17qvR0aCKE3C zGjSM65SgOgUlSoq6vl82plE9uUrZC4flKYz7ywu4pw55VnXWoCJPGbJmdR+8BJ/wKdQgf OhNOfcN1Lh+axzXEHazYPFqhOhsAlA8= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=OJslFK39; spf=pass (imf22.hostedemail.com: domain of chenhuacai@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=chenhuacai@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1769313812; a=rsa-sha256; cv=none; b=Uio0Mm6jPgDF5oZFdMSkrFTQmqVv1aXNohQrSBr8CsHptPsAIcKAVIl7XD6bT8Nys7aoLx bNV52yD8PM3ZOme7IY5pw2SFKz+Pt007R8s397njk1TdvJQwMBVWagiQcRwGM6CM62C2/O 6QKz2nDwt1d2RNEkJfPltlLL6KcSdms= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id EC5E84445F for ; Sun, 25 Jan 2026 04:03:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B043CC2BCB9 for ; Sun, 25 Jan 2026 04:03:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769313810; bh=TQaDh7lsKY8tFsjMYD7BTGjXonEHzONpf6q4U3MFS74=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=OJslFK39224RKhla6bB5iSfRIwZLSwK0zH/qXmWbtyo7Rwl2geQRVpyApYumbBS6h sjhFr3mnhaoAmtdJHFax59GRvvrchLOL5zShuJryRKCL7ySkkObMDssmrKVgXJ0myG 9+KPTkbQ+zbVxLp6U1PgZ4cIlPbpwYskoj24pHd0BCmt+XFOCGK4zvewGliNDbYFks sRbjZITxoIwueQUFws89pfQSLNAOzlD1hFTDp2qOUxBfy/3/15PDeqQUPdqVY6xM1G rqZFUV4MyTyaDUC9aaqickqMdGQrSNN7a8oRGSKbNsHFXNjkhd1URPdcrbjIDYYNsL ivsA9SUzUuKCw== Received: by mail-ed1-f49.google.com with SMTP id 4fb4d7f45d1cf-652fdd043f9so6229262a12.1 for ; Sat, 24 Jan 2026 20:03:30 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCWyf6jR5QdfA2IpTHVP6Ey+s5lWoJ56We+IWrs4YWGtLNCekQ44ZkpGbbrglkX28oO1qPJo5tQUMA==@kvack.org X-Gm-Message-State: AOJu0Yzo3OvBFBQPojSy+FaAm3C/ShvezbMmNcA2bLSm826jfHn3ray5 LbfzCvKyywI/Islz68FH1GTPbCa5ortP/kso1G/b9aKK3EwgZ9/fVNECysqOwMhTFiyzXm1QVMu VvMHbYyagdMEzB005prBZULg1EJfkdkA= X-Received: by 2002:a17:907:2d09:b0:b73:6f8c:6127 with SMTP id a640c23a62f3a-b8d3fa14150mr40755666b.12.1769313809089; Sat, 24 Jan 2026 20:03:29 -0800 (PST) MIME-Version: 1.0 References: <20260109051054.188030-1-fearyncess@aosc.io> In-Reply-To: From: Huacai Chen Date: Sun, 25 Jan 2026 12:03:25 +0800 X-Gmail-Original-Message-ID: X-Gm-Features: AZwV_QgZtJU-wwFoOJ5ofNX243-l4sQGf8pk1EIiYklzuhdRgtqAyAoGEoSGyHo Message-ID: Subject: Re: [PATCH] loongarch: wire up memfd_secret system call To: Mike Rapoport Cc: Lain Fearyncess Yang , WANG Xuerui , Kexy Biscuit , Mingcong Bai , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Shuah Khan , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Arnd Bergmann , Jiaxun Yang , loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-riscv@lists.infradead.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 44077C0007 X-Stat-Signature: tmia4qsufi44fyextao1m7w6o1gd5s6b X-Rspam-User: X-HE-Tag: 1769313812-88562 X-HE-Meta: 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 1nUpI4TL D7NdfdCLorFJ2QncM+KMKWHslQoscMDeuJ3oxdV+2FTxd3NFeDwtrD7dkJ02xXdk4aGO7vGWxMXDezcb7Z+qw/MTTP//8y753bPMJzR972NJ2UN8/60V8shlg7h5NG+Dsz9fQ3c9tWOSzhZ67tszGRWh1zeHuAB1oHFzk+ZQTaxqGOuJR/iXxq2MphcAr2f/D9KH09T7tCXDFGXwH/VqIYce9pG4NxE48S9hioWwCOmQxJUVEIhoSrMwyg5gvhdbB4l354lqmONRurg2+NXkR7B4NF4wDlfCkH2h/VVFw0ZVy8rZ2k4MvV+B9oyQUYWebGHTkX4PkmY+E1xgCWTcMjHGqwjjRq9gKd+VPtiMynObGgcGC42Rgs7JCe08yM18unMsBNFHTf7G60YI= 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 Fri, Jan 9, 2026 at 4:21=E2=80=AFPM Mike Rapoport wrot= e: > > On Fri, Jan 09, 2026 at 01:10:51PM +0800, Lain Fearyncess Yang wrote: > > From: "Lain \"Fearyncess\" Yang" > > > > LoongArch supports ARCH_HAS_SET_DIRECT_MAP, therefore wire up the > > memfd_secret system call, which depends on it. > > LoongArch version of set_memory* does not support splitting of leaf PMD > entries. Does LoongArch always use PTE-level mappings in the direct map? No PMD level mappings now. Huacai > > > Signed-off-by: Lain "Fearyncess" Yang > > --- > > arch/loongarch/include/asm/unistd.h | 1 + > > arch/loongarch/kernel/Makefile.syscalls | 6 +++--- > > tools/testing/selftests/mm/Makefile | 2 +- > > 3 files changed, 5 insertions(+), 4 deletions(-) > > -- > Sincerely yours, > Mike.