From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 C9E6633F590 for ; Mon, 1 Jun 2026 08:43:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780303418; cv=none; b=AMYPDDnQ4+UBCM4UvDVPMGdHErNyFOXMv4YOmq9bqLOzAIsX7ki1pIcNWGfHIYOLLhUAVx0l/SViOPfk/6Ex+SVYuro79GFFe8LLKIT0dRsITLBBWYmuOFKsd9BG6ZrDPRjVVZWlxyZN3F9ErTZtVcx1Br1HerwsvTagA4nmhmM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780303418; c=relaxed/simple; bh=or9nrt/sPpOrifgqe7xgdI64YKZfFojouqDdHaYNLgk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=idtWyxUa+ETf/jM0cIIur5SChuVCWzRNhHQKQo+4lS3/wCP9qPSTLPybQIZ3JezDR5oJTNyunmj3pmRVt+pTzdIrvmmmu2Hru1tvwLDVj8+RQEMEEQSljBzS0GfQNYhzVr3kmfj7GZXjNQiw71ynCKu9rChMSq6SpcZQD5JhGYg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=hAI8b1eB; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=XshoOjaE; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="hAI8b1eB"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="XshoOjaE" Date: Mon, 1 Jun 2026 10:43:32 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1780303414; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=or9nrt/sPpOrifgqe7xgdI64YKZfFojouqDdHaYNLgk=; b=hAI8b1eB7F7N1IxJojvddUnoROaDe3EA9dHJW4Acf/LJSnSDn4qcNiEuj9cCWcPhjqYLkJ 3Rlo3A2sXDASwS8qAy1keNm7LKglh0CUPR8zgUuHfUbNNYTdWwppT21DiA9jGlElo/gJN2 iScxRMb/1gXlyzUOOym4T+acRNRqGWkR84U3mrvuClpMMFJe0XCKSqSX4rRptVrSNpKZYo KJ/TJjE5d2JrtYjf9HDEYGX2bkZZJBkhkP6OiLHuLyngIW/SFxaWXbgouXYvHB6sn/8Lm3 xdhlgzMsCdAXxuPVh0S/AmUPIhySPyPnONxmHdf3yiW7/MNP7FACNZCSJiJo1g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1780303414; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=or9nrt/sPpOrifgqe7xgdI64YKZfFojouqDdHaYNLgk=; b=XshoOjaERE5oDCpD0i+1HdJpqcFNRW0GtPFzCQ0i/vRWjRYjBDcYwouSi+FXP1bEnbJRb1 ExhTpi0zaWsBh2Dg== From: Sebastian Andrzej Siewior To: Karl Mehltretter Cc: Peter Zijlstra , Ingo Molnar , Will Deacon , Boqun Feng , Waiman Long , Andrew Morton , Clark Williams , Steven Rostedt , linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: Re: [PATCH 0/2] lockdep/selftests: Restore PREEMPT_RT task state Message-ID: <20260601084332.L2C5qF0q@linutronix.de> References: <20260523185123.17482-1-kmehltretter@gmail.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-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20260523185123.17482-1-kmehltretter@gmail.com> On 2026-05-23 20:51:21 [+0200], Karl Mehltretter wrote: > Hi, >=20 > the lockdep selftests deliberately run broken locking patterns. On > PREEMPT_RT, some of those paths also leave task-local RT state behind, and > dotest() has to restore that state before the next testcase. =E2=80=A6 Reviewed-by: Sebastian Andrzej Siewior Sebastian