From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CB284823DD for ; Mon, 20 Jul 2026 03:23:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.4 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784517825; cv=none; b=LvLAvQ/Va0zIuxo7jbx5nlCRAnB/aa1wPRwhAVfE5b0MlGlQMIuuKdYbTzSf217HyvhrdfTso646ESo4fH4Wk+x8G3Ono4dHZS8f/14nsuyOFmX9OdWL1FhqRGR+fZOqF/4J2P3GF9ZGJea0Yr1Oa0xgIYpnMavfnYz1MxSOYoU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784517825; c=relaxed/simple; bh=SnoS7kRJoAQla5aJVwHNugGbQQERrLmmC2XEfGAU6sc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=lZb8isJ6PxlCH+HeMAEy4qAZ11xBH+7gnMKamI3Rt3IOV1RnnqtiChjIKuIhZm+cWVIpaVrxJlYlQFtq6mlFIUYP4GHx56l4fOWFsYxZUGYgm4YCFVJcPsir19xDjinYEBel06Duk+aFVmJvxMci3rQcb5EBWNY3TBwVtV/ahRo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=SJAj9QxP; arc=none smtp.client-ip=117.135.210.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="SJAj9QxP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=+X Mn/HERRhRRdCWQyLmAD3zDxrzoE0ajebjYk7PWN9c=; b=SJAj9QxPGPtl/ULag3 wjlHyp7gnhGEdbqCSwYB8Qu6RsfjhvINBHreW06FjD4QYCZSd6BgtdJELsYtguyt r827Vq5wNHcpXJk4AKio9dIODgqcHarbjsXlCblAFkhVW49nBoeh9plVme9TAEgt NDCh77mQEHTW/zfXNbOR5DKAs= Received: from Ubuntu.. (unknown []) by gzsmtp3 (Coremail) with SMTP id PigvCgBH+wKTlF1qrd2XIg--.2654S2; Mon, 20 Jul 2026 11:23:00 +0800 (CST) From: Xiaofeng Yuan To: Paul Walmsley , Palmer Dabbelt , Albert Ou Cc: Alexandre Ghiti , Nam Cao , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, xiaofengmian@163.com Subject: [PATCH v4 0/2] riscv: fix kprobes on minimal kernel configs Date: Mon, 20 Jul 2026 03:22:55 +0000 Message-ID: <20260720032258.5188-1-xiaofengmian@163.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:PigvCgBH+wKTlF1qrd2XIg--.2654S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7XryDJFy8ur18KFyxKF13twb_yoW3KFX_Gw 1xtry3K3y8XayakFn7Kw4fWryjkayqgay8Cr1UAFy2gwnI9r9xCas5tF98Aw47Ar4fKrn3 Zas3uFy3Ar1IqjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRZJ5otUUUUU== X-CM-SenderInfo: p0ld0w5hqjzxldq6il2tof0z/xtbDAhQ8P2pdlJRRCQAA36 When building with an allnoconfig-derived minimal configuration (without CONFIG_STRICT_MODULE_RWX), kprobes fails because instruction slot pages from EXECMEM_KPROBES are read-only and patch_map() bypasses the fixmap writable alias. These two patches fix the infrastructure. PATCH 1/2 changelog: v2: use CONFIG_STRICT_MODULE_RWX instead of ARCH_HAS_EXECMEM_ROX v3: add commit description v4: fix indent alignment PATCH 2/2 changelog: v2: add commit description v3: early return when !CONFIG_STRICT_MODULE_RWX Xiaofeng Yuan (2): riscv: mm: make EXECMEM_KPROBES writable without CONFIG_STRICT_MODULE_RWX riscv: patch: skip fixmap mapping when kernel text is already writable arch/riscv/kernel/patch.c | 4 ++-- arch/riscv/mm/init.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) -- 2.43.0