From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794225913; b=Kc++v7Ok8IQcKznWYCQRKMWajCuDVf/ndfZhBxYoV2T/2JfZOM3AuZlLQY7N2XL5b7R9 baRvzvA5OQJ+OSYvRDTaUB57hVoI2iSh/0WGVupQAwVR32jyb5hSqgxInn0xLsRIfKd2c rMszE6Vvqqs7XyXL0xt9MGTwwDhhCw2kcsNr6AVjjkvCQyY4m2EzFLCt3KsYXciC1ec97 vl0d4ajy5GUzV9nSrAaVk0HNt9E71x4rap0WK1fjy2sqTEi5Msh74jHnxfUg8L3NnD9at zBrNQLkpplwp32GcNqabNPqw0LDNqmpmmBhLI6x81J7EOvffVhlus3hCTuMRgsM3PRw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794225913; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: MIME-Version:Content-Transfer-Encoding; bh=7QYMXonlT1X/OPGysSVGx2KIKbzgu61tqS/KtO5R6L4=; b=ayuOAkmMXngMcignFG9YuU+HAOf7am0H4uZoFgpYR6/K7At0Mu03+dnK/68foXGSl1ep WHrubqVYkKam36PNachiA1uqlC4ZRA9KHTv0cr2qNADnTtYckF6PPmDbeAHSl0AhJGbto HfJB0JDiCr8t/TdajPKT+8ixJmudAsg+WSG1/CFeFvuPf+sS8dhd9TLv5R9dUjpsyomTj D33SKZoFrgqyxuuzYtoSAPDCjkupZTrZPem/jy9MKGbeA/TF99f6UukOblxLxY9cMOky0 HrGN6JrPwall6AsXFdN1XycwaOqcIMgaYr47AQkHOX7MaJq/JscUuCvZvsgy8+Lqt4w== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cxvv80tf; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3546C606A326 for ; Mon, 9 Nov 2026 12:05:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=cxvv80tf Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8725E1F0089F; Mon, 9 Nov 2026 12:05:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794225912; bh=7QYMXonlT1X/OPGysSVGx2KIKbzgu61tqS/KtO5R6L4=; h=From:To:Cc:Subject:Date; b=cxvv80tf4aXmD9C43/MEHNe9zk/XOvqolhWIiXZdZMbWuItd64Qt+Eec5f3n8l3TH bEeXEYYcf2FECsC4387/eB7cZ7Dzz5R8a4Y9NITxgFw57Fx4q2uUiCx0XlzoyIkFIe e4OdrhnHbZHoyCSKGEcTrw7Dn41p6jBtM2nkI1URQFwSoTPAQpiDoR3y8bh7nl7ETf FrVXkorB2YhV5Hk/fN7tPjhceB2XfaRA+04R4fYULh4TrbRlGfGhRTBDxzWqnxOy4B lxEGLabfYbu7mcX5Pt+8TBuKYaf/YydINE9Tke532vWOT8D3B9rOVXXVa4YrzkL2Nw zs9k3s1sFuN0w== From: Jisheng Zhang To: Catalin Marinas , Will Deacon , Mark Rutland , Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , Tejun Heo , Dennis Zhou , Christoph Lameter Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org Subject: [PATCH v2 0/6] arm64: Fix instrumentation escapes from noinstr path Date: Mon, 9 Nov 2026 19:44:53 +0800 Message-ID: <20261109114500.20298-1-jszhang@kernel.org> X-Mailer: git-send-email 2.55.0 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Code marked with noinstr can only safely call other noinstr or __always_inline functions. When reading arm64 source code, I found necessary noinstr markers is missing somewhere. So I asked AI to scan the arm64, this series is the result. Since v1: Mainly address sashiko review comments: - add always inline to per cpu helpers - use tif_test_bit() instead of test_thread_flag() in sme_enter_from_user_mode and sme_exit_to_user_mode - a new patch to mark kasan_hw_tags_enabled always inlined - a new patch to Disable branch profiling for architecture library code Jisheng Zhang (6): arm64: percpu: Always inline helpers used by noinstr code arm64: entry: Always inline helpers used by non-instrumentable paths kasan: Always inline kasan_hw_tags_enabled() arm64: stacktrace: Always inline internal stack boundary helpers arm64: lib: Disable branch profiling for architecture library code arm64: alternatives: Make branch and ADRP offset helpers noinst arch/arm64/include/asm/cpufeature.h | 8 +-- arch/arm64/include/asm/entry-common.h | 2 +- arch/arm64/include/asm/fpsimd.h | 8 +-- arch/arm64/include/asm/mte-kasan.h | 4 +- arch/arm64/include/asm/mte.h | 10 ++-- arch/arm64/include/asm/percpu.h | 18 +++---- arch/arm64/include/asm/stacktrace.h | 16 +++--- arch/arm64/include/asm/stacktrace/common.h | 12 ++--- arch/arm64/lib/Makefile | 4 ++ arch/arm64/lib/insn.c | 57 ++++++++++++++-------- include/linux/kasan-enabled.h | 4 +- 11 files changed, 82 insertions(+), 61 deletions(-) -- 2.55.0