From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f178.google.com (mail-pf1-f178.google.com [209.85.210.178]) (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 3531C1A08BC for ; Sat, 3 Jan 2026 08:47:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.178 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767430070; cv=none; b=AtfQM7aJ7Zb+Ag+6R9yiU1riZRK8HO0SbmYU61Db05Hiq6SFoNdXtrbSRl7XXh8gxsT8ZRujwB2Eqam4tRVI5S1qsUT4KPPIPkRAqwbJT3orWheheKWdPVOfL4OMdvQKoijg2ARBTRLhHYE2N9C+yj3wpMceBaK7G4eW02wdrDc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767430070; c=relaxed/simple; bh=e5hoLtxYWSBKCaXnzyOlvdkNn/9oqCrmBamB2u6C5RI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=XL2HlLCCqPrbtRPeIekJWMOmt39gGseL4DKj4DH9/6AHMTJvSDcnkPi52nae47TqNOs1kEFTLx3q9PXmsj2v7LOzCQ2H7F/Kr9zwYWTfZIbf2zqMf8XlP4qJ3J04qbkXNau8rRpTYPNvRxw3WE3w3LNFc60eLY/mZDfo9sxkoVA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=KrZts75H; arc=none smtp.client-ip=209.85.210.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="KrZts75H" Received: by mail-pf1-f178.google.com with SMTP id d2e1a72fcca58-7f651586be1so232605b3a.1 for ; Sat, 03 Jan 2026 00:47:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1767430067; x=1768034867; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=LLfzaNCKblQsWrgVFWjAAIDp8UyGda/a68IUZKqrEfs=; b=KrZts75HRzouzgG+XYA3TsuMuTGd957/RdLxYB6+BJjO4MuoooVt5TmExf57G/aFgb fBfNCBHsoTliQNgUSQiOjm3xt3DxZd4LrF5UEqgP3cscxq8ooI/fkIDCJzZbLCh3QyNW BY/l29Bch6zhxtS2DRajxc2TxZ8OOnjz8k7fNhPZpY6UnAEPggwBlrezeNF256xuWaXS 1RWR4GX8ealUR2bdhWUHkgMPYKGNX8Puja/NLu8Upf7ElL2gSsLL3tV1I4zpMOxEkmEU UXTgBfJDWLAWXJNw8tZtG5TachYD2WRZaJ+2AIVxSHaCdCSyNlr0LlTRedca5buS0Lxl ziGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767430067; x=1768034867; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=LLfzaNCKblQsWrgVFWjAAIDp8UyGda/a68IUZKqrEfs=; b=ZRJDwbf4e5PKuIjWkAX3KmdnIhnjYAHhU5H3SrTJsn7A2HKnmMwFqtkRA0R5kvBEcr rf+tUmv5bSm8AntthLs/Q/GrMnqkJ60G+4Gw/pcgLQo2A0uY64Ug9cDwmRiyCuQnQiLr s8Y/+JR57ShtEXHQQqZbjeRMW05d1+tfGAq9hhLhTHWCpXQytysRhfnU4BE58qUUgZVG 992u1oGZMHJexpPR+ZUo1Q4+XmHi0z1bcQEvhXqqzMhHt/HTIlUGanTj6xpYlMVOfshX updUkU5R3dmm7Z6opSHF9Xm4Ebg68r/MxnSulyB5c3W00TIARB5OGFv7IN5sCd0v8q6D yZqw== X-Forwarded-Encrypted: i=1; AJvYcCWhf2RzngbXPtqJjH1SwqZrApqP3Fi5QSUfpJV3OoXOA6eCqS7NQmwqKJPlCA2t480/0kOdCkctGsuy@vger.kernel.org X-Gm-Message-State: AOJu0Yy1wvwK23odPnfhv7Hh4YF/hZxg6TjDo7rqsjHDhN5hU5YoQDeS EloETYIJaeQdVzgiIaXJbVofXwDe4hL2XRVlI3D4URQ22wSP7ljdZa3a X-Gm-Gg: AY/fxX6g1UlhiKMJc3VNuOY8GnX3oHT3PCle34391wAPzDKe1Cw2fklff7k3ybWKAVl Xmf7oLNSx+bPSMXKybLpOnB6teLJQAWTpE2pCuMRLnFz6P+zncOvjP2lNGbk5W139Iot27LJpwU gOJDl/dXyzdqFOBSZYPLia2yBel9V1qGHZjxl8sgGoHmS3Ajobp/0bCPryP/gACDhdvoaI6ZM2K wOCNtxFCdF5fEZzNOLzMNBF+EcIh/OX16A6O9MJCbPok4JDNdpnRVH38DIGx8qC/bWbluuENE7u QnCW0YTcyDMBKsdJlhYt9YdZkOJiQKT78xc0Txwdsd7hDDHojBMAksZqpPWHQ22qPQEs2Y2AU+E ge42Y4slJ6sXUycILjLieWY1mm69e6nN+2A5aIrXisRbkMZ/hn3X3U7oAMIqh3o95LdOocrPD9p FoOtRARzWqwtsHC8ZqmGHv+ofSSNZDn6JXNTs= X-Google-Smtp-Source: AGHT+IFlp8qcq2QazAOf3KnrJVHQQLc5fUVTVkMNEtXBSYaNUnUycb5/s395woDebt+kaXn7KmVKuQ== X-Received: by 2002:a05:6a00:4ace:b0:7e8:3fcb:9afb with SMTP id d2e1a72fcca58-8148ba19ccdmr1341264b3a.17.1767430067508; Sat, 03 Jan 2026 00:47:47 -0800 (PST) Received: from jvle-ThinkPad-X1-Carbon-Gen-8.. ([210.73.43.101]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7ff7e197983sm42704939b3a.33.2026.01.03.00.47.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Jan 2026 00:47:47 -0800 (PST) From: Keke Ming To: mhiramat@kernel.org, oleg@redhat.com, peterz@infradead.org Cc: linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, tsbogend@alpha.franken.de, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org, Keke Ming Subject: [PATCH 0/5] uprobes: transition from kmap_atomic to kmap_local_page Date: Sat, 3 Jan 2026 16:42:38 +0800 Message-ID: <20260103084243.195125-1-ming.jvle@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The use of kmap_atomic/kunmap_atomic is deprecated. The purpose of kmap-like functions is to create temporary mappings. kmap_atomic() typically disables preemption, while kmap_local_page() allows preemption. According to the documentation, kmap_atomic() is primarily necessary for contexts that cannot sleep. > kmap_atomic() may also be used by interrupt contexts, since it does > not sleep and the callers too may not sleep until after > kunmap_atomic() is called. > kunmap_atomic() may implicitly depend on the side effects of atomic > mappings, i.e. disabling page faults or preemption, or both. In that > case, explicit calls to pagefault_disable() or preempt_disable() or > both must be made in conjunction with the use of kmap_local_page(). Link: https://docs.kernel.org/mm/highmem.html#temporary-virtual-mappings Link: https://lwn.net/Articles/836144/ Keke Ming (5): riscv/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() arm64/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() mips/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() arm/uprobes: use kmap_local_page() in arch_uprobe_copy_ixol() uprobes: use kmap_local_page() for temporary page mappings arch/arm/probes/uprobes/core.c | 4 ++-- arch/arm64/kernel/probes/uprobes.c | 4 ++-- arch/mips/kernel/uprobes.c | 4 ++-- arch/riscv/kernel/probes/uprobes.c | 4 ++-- kernel/events/uprobes.c | 12 ++++++------ 5 files changed, 14 insertions(+), 14 deletions(-) -- 2.43.0