From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) (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 04FF911CBA for ; Thu, 27 Nov 2025 12:49:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764247754; cv=none; b=d8ZfKbo4MRoDIDw5QiW7w9R3byd1AnRoWU2d9yZhEQdN5ewwfEN++vHfkXN5OFqGF9emY8T94s/qtIsTJxBPJAHAAihB/BxsEiJuVOYl5M9PHJoFX/VeNXscMfUisVb2oPi2zmvVJwIa/MJn1NDX745ZfrPTNM/ie6cd0r80Fyw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764247754; c=relaxed/simple; bh=yS7TUN5zoOacc3Wgn0+gHJ45wPBx4Svn2WEsF9Dci1Q=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=iteX4Y4fXeoOiP7XnKvaw13ECnBAft2IqMyGJZXLx9M7hrWEqozwkcO0MR+r19CC64IWy06MIMe64WvCmLZy1zYrSa3vw11KBz/ArKexJXm876DuAo9qur2w72XnSzrPbq5ev7hgZp+B+DY/iIx+Cq5MSwWDll9Qqn03Ci/q56k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=ebmc1Lj2; arc=none smtp.client-ip=198.175.65.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="ebmc1Lj2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1764247753; x=1795783753; h=from:to:cc:subject:date:message-id:mime-version; bh=yS7TUN5zoOacc3Wgn0+gHJ45wPBx4Svn2WEsF9Dci1Q=; b=ebmc1Lj24jRjNcw7ROzDX7mxv25sptLGcBvMhUc4IxCFh8j1XD84eqC9 7z28QjJt2R9oBjZWEIInS4Hu002SrLz1xeTisL4HVywwzKGOgVDgm5eTj 3BMj+v0mEJKLKbjndU3pknbEM6CtB7IQ55SwUk9NNAKvYSjovdNmFScVy Lw9Fwq9bvIkNrUjzktcHepwUP7C6KdsdEddVIxN3Zi9fLdK4+lhVl3Vfl UazSxInazvJnFyDj8ri+gcueb6ChLxtjP29lrJtq6zKCIx0DJFVbNK3Y7 2Stw/s6jyn6HS6r0Z+yU9l0O8MYW2Ji6LYucKDta38glbiHu4PLP5/P+/ g==; X-CSE-ConnectionGUID: e80312RZQLm0aLwJj9E4Zw== X-CSE-MsgGUID: NqXdMQC6QZ+d0hgJ/sCopw== X-IronPort-AV: E=McAfee;i="6800,10657,11625"; a="66327613" X-IronPort-AV: E=Sophos;i="6.20,231,1758610800"; d="scan'208";a="66327613" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2025 04:47:13 -0800 X-CSE-ConnectionGUID: vutw0jn1SjuNrASDkfGfOQ== X-CSE-MsgGUID: RO/ujXAIQemhYWSdNqawbg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,231,1758610800"; d="scan'208";a="192888445" Received: from ettammin-desk.ger.corp.intel.com (HELO localhost) ([10.245.246.43]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2025 04:47:11 -0800 From: Jani Nikula To: Akinobu Mita Cc: linux-kernel@vger.kernel.org, Juha-Pekka Heikkila Subject: fault injection: query if a fault has been injected? Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Date: Thu, 27 Nov 2025 14:47:08 +0200 Message-ID: <9542437811a00dc83e9befde3ffe755643f511dc@intel.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 Hi Akinobu - The i915 driver has its own fault injection mechanism that we're in the process of migrating to the kernel generic fault injection. One feature we have is being able to check if a fault has been injected in the driver. We could then tone down certain error/warning messages to debug messages. The point being, CI could more trivially ignore the expected failures, while still failing on errors and warnings that are unrelated to the injected fault. Is there anything like that in the generic fault injection mechanism? Or do we have to figure all of this out in user space? BR, Jani. -- Jani Nikula, Intel