From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) (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 B81302F3C1A for ; Mon, 27 Oct 2025 11:35:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.196 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761564922; cv=none; b=AQzkWI9fvF9Fd9OWSLkZg+sPhjBnV3khK0Z3SuuKfDqp2J6YnNox/KqkWi3plZSWByj3735CbMdBDkLfxB5+J9rXLIYQw5P+VviPS/wtlamP9tJUZvNSn6B/EbvtSfhlkNaGA+/fjAIaGZ79KYsj+1TrRLaNt1xaPUjOGFOzCE8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761564922; c=relaxed/simple; bh=L40yrkHIaWxIFVC6xrrI4w8uqkUQ+2JJI3FSkRM/D7s=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=blyEpxLJwwxOSjOrAXUHZQiac8UfJHJ37Ph6GHavJIUEE2A7aBixIye3wpBfYgzxO5McMoEjDcqRdAm99SHWpLjkhyJWNNCesN59OPyLWhuFGIrwBgz57D40qd4JADJGgzT3K99K+ilpWAOMvxaoKzjBWw2JfIw92xdE5akyHHs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=xenomai.org; spf=pass smtp.mailfrom=xenomai.org; dkim=pass (2048-bit key) header.d=xenomai.org header.i=@xenomai.org header.b=TXW5rHf2; arc=none smtp.client-ip=217.70.183.196 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=xenomai.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xenomai.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=xenomai.org header.i=@xenomai.org header.b="TXW5rHf2" Received: by mail.gandi.net (Postfix) with ESMTPSA id 9BECC43B29; Mon, 27 Oct 2025 11:35:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xenomai.org; s=gm1; t=1761564912; 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=L40yrkHIaWxIFVC6xrrI4w8uqkUQ+2JJI3FSkRM/D7s=; b=TXW5rHf2BkGgyDc4Z5qWuUJajsOx5hqSTJJYxMl9yaDU/Rch3jIsCBMaHYsUcWJ9Y9BZ6K +35FW2Ac9ukiniWi9ieQyHsjUdyoX7WdJRt4byusQZh7TM9nYzpOG3ZbO47jCFOtRCkCrg sOoxa3/D7/IUxIUuwJqaCxekQCzkBO5pz15OtQq3bk4IgpUTGv2f8ig+igIwfrM7Uqwu8s CQSd09kPTP5zqNy4MzbRLBxua7wOKoEyi8XxDJVE9r5do3UxF2j/jcZ4FqNwiUPCuqoDjs LVipb7QeGCtLUaPSp7EFivT9IUSyPM43jHCIlJazEvp7Zpn4+EnFn3SsnUfRwA== From: Philippe Gerum To: =?utf-8?Q?=C5=81ukasz?= Majewski Cc: Giulio Moro , Xenomai Subject: Re: Unexpected switches to in-band In-Reply-To: <20251027120535.7933c720@wsk> (=?utf-8?Q?=22=C5=81ukasz?= Majewski"'s message of "Mon, 27 Oct 2025 12:05:35 +0100") References: <20251009151737.0d03b211@wsk> <20676160-4572-d92d-4b33-ff4255946345@bela.io> <87qzv9sa9c.fsf@xenomai.org> <87ikgls9kh.fsf@xenomai.org> <20251020094705.2ac256f2@wsk> <9d2bacac-8d70-f083-e926-21beee2207c2@bela.io> <87o6q1ad07.fsf@xenomai.org> <20251023155439.0170f987@wsk> <87a51djuor.fsf@xenomai.org> <20251027120535.7933c720@wsk> User-Agent: mu4e 1.12.12; emacs 30.2 Date: Mon, 27 Oct 2025 12:35:07 +0100 Message-ID: <87h5vk7f2s.fsf@xenomai.org> Precedence: bulk X-Mailing-List: xenomai@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdeggdduheejkeejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjfhgffffkgggtgfesthhqredttderjeenucfhrhhomheprfhhihhlihhpphgvucfivghruhhmuceorhhpmhesgigvnhhomhgrihdrohhrgheqnecuggftrfgrthhtvghrnhepveegudejhedtheeihfelfeffleffleeitdelgfelhfduhedvtdeljeekteeghefhnecukfhppedvrgdtudemvgdtrgemudelsgemfegtugdtmeelkeelrgemhegtgegsmegsjehffhemsggrfhenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpedvrgdtudemvgdtrgemudelsgemfegtugdtmeelkeelrgemhegtgegsmegsjehffhemsggrfhdphhgvlhhopehphihrohdpmhgrihhlfhhrohhmpehrphhmseigvghnohhmrghirdhorhhgpdhnsggprhgtphhtthhopeefpdhrtghpthhtohepgigvnhhomhgriheslhhishhtshdrlhhinhhugidruggvvhdprhgtphhtthhopehgihhulhhiohessggvlhgrrdhiohdprhgtphhtthhopehluhhkmhgrsehnrggslhgruggvvhdrtghomh X-GND-Sasl: rpm@xenomai.org =C5=81ukasz Majewski writes: > > For the record. Both Xenomai3 and Xenomai4 have been run on the > identical hardware. > > On Xenomai3 there are no issues... > Dovetail deals with those things, and this layer is shared between xenomai3 and xenomai4. So the situation is still unclear. >> so either some >> traces are missing, > > I will check if I can add more tracing. > >> or something happens at hardware level which the >> kernel does not know about, as it may be seen on x86 with some >> uncooperative BIOS (e.g. SMIs, thermal events come to mind). > > IIRC - Giulio reported the issue on some ARM system... > Yes, but he also reported that he could observe the same issue on xenomai3/cobalt as well. So we cannot rule out two distinct issues just yet. --=20 Philippe.