From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (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 87AC92F85B for ; Fri, 24 Oct 2025 15:36:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761320188; cv=none; b=dcalrnFaBTkJK6dQ4rUnDRFqlcdZ/WLh6ykvzhSEfQGs5iJvwK8YW50mR2N65LggPaEjbTTDLbzN/6BLOypHQArYXP3HERAAHOpQWshmPiJ9ipOxxbCdeT7GZQbErjKPC81zhd9nGB5hKmwO+ga0+n8lsO336F0p7BAZTWv0QVo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761320188; c=relaxed/simple; bh=c4POsfpSmCeovwXkfa+/5s5a3X9FyKZ4I9A338tJHhk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=KFZb/VnqaEbLtpIkJO7XNEAgt8PYJIZVqsKkSQqOC781JcybrKf5LxOvCA5gM/RUY9r7j5+XQRu2+7jcB9Y4/+VXfbXgKyrtQeY2UP4TLTO1KoUHXpjpnP7Tr5Y5rtajnYb6DSbLLJTgSVhm++jjVd3xxoS4OmP7w0XS2SzXKEI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EaObn41R; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EaObn41R" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761320187; x=1792856187; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=c4POsfpSmCeovwXkfa+/5s5a3X9FyKZ4I9A338tJHhk=; b=EaObn41RxLAFALgv9xnsDtGHWIVEdQZRJtlrVviovYfVwmJEvw9r/cBl KlZBLobWkkZLho0Ybw0yYAqWGYggGoTTzlLH8ZP1qDckG2aL1udSbxJ1t 5y8qR+tGC4ApSYirWChZxBOh0LUUj1kum7Z890+ulJRgvx2bIDySKCtQJ ImDYt8TgCSwjhj61GkQx6/AHgWrVABkAOxCqUzptNUW5FVhEX+S/8R4z0 f2wECGQNVtWv0XJyxPu88PnUxsfM19PKG3eS2JUvTJ3Q2+1hD57aFJv8j c0B7zaOh12v690wTOLFyny6feqJIu+1hXPKJvuEtcvabiI8tWWYMLC5Ln g==; X-CSE-ConnectionGUID: qbU+49LiQWurbh7/GrHJuA== X-CSE-MsgGUID: vBQU08GBQ9COX7UY8QdVbg== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="62712275" X-IronPort-AV: E=Sophos;i="6.19,252,1754982000"; d="scan'208";a="62712275" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2025 08:36:25 -0700 X-CSE-ConnectionGUID: t/camtXVQBymGWd9ZB89Ww== X-CSE-MsgGUID: lPMOpaDxR46y4tS9e2JuFA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,252,1754982000"; d="scan'208";a="185225555" Received: from smoticic-mobl1.ger.corp.intel.com (HELO [10.245.245.138]) ([10.245.245.138]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Oct 2025 08:36:23 -0700 Message-ID: <8fe27842-8155-44db-b262-a148b5ce5436@linux.intel.com> Date: Fri, 24 Oct 2025 18:36:17 +0300 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Fwd: USB DBC hang during earlyprintk initialization To: Milan Oravec Cc: Greg KH , linux-usb@vger.kernel.org References: <2025101544-galore-sculpture-b243@gregkh> <4e6d9b62-b9d0-4a05-99a9-143899547664@linux.intel.com> Content-Language: en-US From: Mathias Nyman In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/20/25 09:43, Milan Oravec wrote: > Thank you, is there any workaround for this to get DbC working for me? I just wrote a quick hack that bluntly retries early_ioremap() with a smaller size, and then checks if we are lucky and DbC capability in xhci mmio space is withing this new range. It will still trigger the same "WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:139" messages, possible several, but would be interesting to see if it works. Thanks -Mathias