From nobody Mon Feb 9 21:21:54 2026 Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) (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 44DFA131BC8 for ; Wed, 27 Mar 2024 16:05:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555528; cv=none; b=bct0kPLXuEPW+iXZo+yAUXQOnqTuAlzgj9vFtHP/yRIUHjroJgUk3NS0dpOJqCDMEp0hk0JJDgUF1w7dTlbVgQXvW1UhxiP7AjwBlJ8NlrJ2k+hQ4yX+wwXy1RQQMAjt1dYjndMawHpJWIhzjIEuSQFYJky5hQ57jJcVewOqGHQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711555528; c=relaxed/simple; bh=kMyE2qfY2RjUoUPj35JPV4OFISD0zpAHsEoL+e/lyNg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=hzkeg7M9KjuFRelDE5BevpmvZLdLLdWHQKXom3O6SJMbFLmjVAxhGgyPg85Nw1yovfqshp2cZS+GmwLy/qmvKoraoFaeacJAk/LO9VoS9YIL5mr0J1UeaNVFvoPJQnpBmebAP2j4bZW/tSj8+SiDytICybjdMh/2Xb1szWGieR8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=sifive.com; spf=pass smtp.mailfrom=sifive.com; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b=Bl9KrRRE; arc=none smtp.client-ip=209.85.214.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=sifive.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sifive.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sifive.com header.i=@sifive.com header.b="Bl9KrRRE" Received: by mail-pl1-f181.google.com with SMTP id d9443c01a7336-1dddbe47ac1so7327845ad.1 for ; Wed, 27 Mar 2024 09:05:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; t=1711555526; x=1712160326; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=o/A8S6GwPVeRQh4mUyUZHiHi/w/+o4RQ1PPE/E2MAhE=; b=Bl9KrRREn8UPdOIYObq3a3vzzg1bW5T5GLanhacs/4bcFsP4dN3/Tzst0UdtnMC8sA bQm7bf+F323PDBdjAl0QPyr9iYO7X4tHIx5qQgGB40FeAna8OGeKuU5ZfZsjqFEuQrn8 qm2taHbhuLuyo4Kg8Uc2TPSBCvdokWfgMdFmPtUVk7zm/cAhCNP+ci26XWoyEP5kZ1CB 8fDaRFyH1M1SSegzIVTSgpk2V0FiQr0nyPhkpLU2CLA5iaVlG1m08R21FGp4yKfUfKDU ne4pIPWDZxtfE8iiV48FopT8M+a0f3UqtHCIFEJokPV1vjumrofTUCBDVzzF0MHJz/9t xkjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711555526; x=1712160326; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=o/A8S6GwPVeRQh4mUyUZHiHi/w/+o4RQ1PPE/E2MAhE=; b=DMGLWzLZlG9NKgx95SnVXwnMet5qpiq5dIOO0+IPRrTxHGto/q1XYCoxtV64SkN9Dv 94nf8j2MURA2KXXgnkbNM9ZJI9p8H6dpJhYrCG38jzGDYuNIEpBjJqtDqDqVY6LemTBb rnxmKunRnCxxkOB5MSDDTZ3mOUfWDWRprfOcR/imJzevKXo9JexIxukaEky3Rpxxum+0 utcBnHMo8C91eKtqJW95CqtAJzsRGEoDMCNb3WQMyt1vAiC3MXpxRXd9zuzsHx+vZ4Dd 94TLF+o3UpsGkRC3eh/+Lqe/S5cZicREoaHHouLBtamuJbyyNmdAxpG86n4A4aP8fFTz 8rHQ== X-Forwarded-Encrypted: i=1; AJvYcCX4aVFeuQwdc5CqGvKlkjw1HyMXUdY/u/BQJJYwhZ5wnk9Eg081hnmGbLuUjBJXSTVh23vc1Krl9znVeEg/EaoNi/c7Ufhdy0k8/CEJ X-Gm-Message-State: AOJu0YyqzzqQL3GlWN3G8zhQ+y8wG4Moz3IAOE9tZgqtrKUlqRWdBHQT UUHUPPSoMa5lbEmhSzHODj4znXxjYUZRZr60DpXF+nY24FCVR23V47dFv5f0UdM= X-Google-Smtp-Source: AGHT+IH/cUxMi1ZJe1xxd7wZiLZTo1eYwqccL1pn+6fDaFGtQ6Q1+BMpEoTMKbn4C0h/HXhupBeb4Q== X-Received: by 2002:a17:902:cf02:b0:1e0:e8b5:3225 with SMTP id i2-20020a170902cf0200b001e0e8b53225mr41189plg.12.1711555526538; Wed, 27 Mar 2024 09:05:26 -0700 (PDT) Received: from sw06.internal.sifive.com ([4.53.31.132]) by smtp.gmail.com with ESMTPSA id bf4-20020a170902b90400b001e14807f9cesm1718226plb.125.2024.03.27.09.05.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Mar 2024 09:05:26 -0700 (PDT) From: Samuel Holland To: Palmer Dabbelt Cc: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Samuel Holland Subject: [PATCH v2 3/7] riscv: kprobes: Use patch_text_nosync() for insn slots Date: Wed, 27 Mar 2024 09:04:42 -0700 Message-ID: <20240327160520.791322-4-samuel.holland@sifive.com> X-Mailer: git-send-email 2.43.1 In-Reply-To: <20240327160520.791322-1-samuel.holland@sifive.com> References: <20240327160520.791322-1-samuel.holland@sifive.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable These instructions are not yet visible to the rest of the system, so there is no need to do the whole stop_machine() dance. Reviewed-by: Bj=C3=B6rn T=C3=B6pel Signed-off-by: Samuel Holland --- Changes in v2: - Remove unnecessary line wrapping arch/riscv/kernel/probes/kprobes.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/riscv/kernel/probes/kprobes.c b/arch/riscv/kernel/probes/= kprobes.c index 2f08c14a933d..fecbbcf40ac3 100644 --- a/arch/riscv/kernel/probes/kprobes.c +++ b/arch/riscv/kernel/probes/kprobes.c @@ -28,9 +28,8 @@ static void __kprobes arch_prepare_ss_slot(struct kprobe = *p) =20 p->ainsn.api.restore =3D (unsigned long)p->addr + offset; =20 - patch_text(p->ainsn.api.insn, &p->opcode, 1); - patch_text((void *)((unsigned long)(p->ainsn.api.insn) + offset), - &insn, 1); + patch_text_nosync(p->ainsn.api.insn, &p->opcode, 1); + patch_text_nosync(p->ainsn.api.insn + offset, &insn, 1); } =20 static void __kprobes arch_prepare_simulate(struct kprobe *p) --=20 2.43.1