From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 A193D38E8A3 for ; Wed, 23 Sep 2026 16:49:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790182191; cv=none; b=uK59K1TlhdhpS/auBgCLfJdHv3mGoJ6GNfdLFtK5MIjhPYPztpuVsvaxArMGMiWGyY2GYo4WyIaRMru9hUE1Imfv2yvmIKnRQmYwsoWjLbHC1Es0bSwcaNcIITfJFzOgkhKa99TzyWJoZogp6xhDqlQJtOPGCFWn8bZ38sXm5Es= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790182191; c=relaxed/simple; bh=tH8tEOYzeSrmf393bfTSL8v+8NbmPfhK/h7Q9cAqHW0=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=LEEANO6LLVknWuPYcx89gGyu3PtO+XTn/q4HMTiP7LBJjGIwl/rDxpo6UD/ajXkxOMcQRkcWRLOT6TmgAN/kUTleBQAQ2w123Fzaz46hzTJfVX+A+eUBPXZxcFGn2qGWvBx9rciu6sOkoZuTcdUa4t6m8rQIa71Sv2YufJsEwE0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RHFJ5wRS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="RHFJ5wRS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5FE71F00893; Wed, 23 Sep 2026 16:49:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790182189; bh=fD1MRzklenxCcCMbBDm0+qHYCXCcltXwuNHR4aIwwMo=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=RHFJ5wRSqVTtnfxiLNliz2bqszJ+9ag8XqbKmC5LUq8/S6hHgpGxlWli39o59YN1o xrDXnJY3mPc9+whI2RGR9cf86TPKgup+11yNDhRCGKMtYVTv8LSjNJJTMgQK0bQcgB Ot326ICWKfTNQQTL/+15QtBk1KBikd/AWl1Q8EnwxThO4gA4qpU4LwJGPYKUFw/wYK jhyXoOA5PSFr1VY6g5IEJmU6u/0Em79aWPfo2R6M8+ZE5b47/EPe4Kr1c1mdpzdW89 3UVa3DnSk2owexne43t3XsQsLtunbGW/T4nbMGcY4QaMGigV6s903MPqsVwAN3oy0S xo9hjCaGZDU0w== From: sashiko-bot@kernel.org Subject: Re: [PATCH v2 13/14] perf tests: Check CoreSight abort entry and exit Reply-To: sashiko-reviews@lists.linux.dev To: "Leo Yan" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20260923-perf_cs_etm_fix_non_taken-v2-13-6ab8c07a5455@arm.com> References: <20260923-perf_cs_etm_fix_non_taken-v2-0-6ab8c07a5455@arm.com> <20260923-perf_cs_etm_fix_non_taken-v2-13-6ab8c07a5455@arm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Wed, 23 Sep 2026 16:49:49 +0000 Message-Id: <20260923164949.C5FE71F00893@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > Add page_fault_loop to repeatedly discard an anonymous page with > MADV_DONTNEED and read it again. Each demand fault is resolved without > signal delivery, so the load must be retried at the same PC. >=20 > For example, an expected int/iret pair is: >=20 > int 5ccadc =3D> ffff800080010c00 insn: 00 00 40 39 > ... > iret ffff800080012284 =3D> 5ccadc insn: e0 03 9f d6 >=20 > The LDRB W0, [X0] at 0x5ccadc faults before completing. After resolving > the page fault, the kernel returns via ERET to the same PC to retry it. >=20 > Assisted-by: Codex:gpt-6 > Signed-off-by: Leo Yan Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260923-perf_cs_et= m_fix_non_taken-v2-0-6ab8c07a5455@arm.com?part=3D13