From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2BD69C71135 for ; Mon, 16 Jun 2025 03:41:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jAoSq3wYkAzHSzDe11Bf1GRaSjoJSndSGYRKR7JMYAE=; b=TKRRS6UBCHfzjYji2aDgTWHR3+ +QTpCjTbDbEHs3vfS2iokIaDFcfdp86yKtwcXKbFy3JAY1lgviBKgxctnLWOJHMan6+tnjdQH+sTX OOMyVwWHheJA3VzlvGrssbCfuWnsin0l9xSD3OGyF2sQPaCgvc4Q0wMj195MlQOO3nnxKJIXlbnnx S4o1RsIQOZWf3vBwcYbK7R4UnnMkIDHw9hf9Hqvi1NXqMPzU0pTLVPa4CtrR3f5c7TOKlPa9AHHky 5kE91HTQWxCxMskaCMjiVOmEY57345qfSpuI0VPf/mZW+EuGl8T1mAGnX32MwYG2fbxGW0ibjJS+5 6cs5EZ3A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uR0il-00000003HKU-3fl9; Mon, 16 Jun 2025 03:41:19 +0000 Received: from mgamail.intel.com ([198.175.65.20]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uR0UF-00000003FZG-3VIW for linux-arm-kernel@lists.infradead.org; Mon, 16 Jun 2025 03:26:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1750044380; x=1781580380; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=uKnRFTsk+pJYACVZEJSmxbfKFT2sXQF4jSkIx9+DZxw=; b=SRDvVBpueQFzCjdib6tAXdyhCmanouW+GWzZ+zD59F+b6WfSXvC21Ieq 2gvKQx6Scd1raAXnSZql6Iryj+CXrF8qL4zMrf/QNDh8gynFHTShKjZUX eu6qy7ukLpfEv32/pYJz0BKrvm73if4se7CaKYEaiBVrxNNSsWyXywxE6 m04phMTR/5fgFRZQD3YMccLkODhp0AtdHt/zWl77d5O5OKhQXrfoc7czN dyM4uAi5mAb+ZxKwYKgOlN2eV/jchn6sRfW6i37MLoX/27XnZcFuKtl6G K8TvJVpF/fmSiPGY5UU0shQigt9rjUZjbzlb2w0PVbJe/E2x6gRhQ4pTJ w==; X-CSE-ConnectionGUID: 3UL7R6lRRcuiDZCZPNXpOQ== X-CSE-MsgGUID: rvYImOPaRK+eOfejG2xW3A== X-IronPort-AV: E=McAfee;i="6800,10657,11465"; a="51889507" X-IronPort-AV: E=Sophos;i="6.16,240,1744095600"; d="scan'208";a="51889507" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jun 2025 20:26:19 -0700 X-CSE-ConnectionGUID: prVbeiNhTtmc4WoRu38u7g== X-CSE-MsgGUID: Efe+tMqcRKuc4eAWZkWqSQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,240,1744095600"; d="scan'208";a="149229808" Received: from allen-sbox.sh.intel.com (HELO [10.239.159.30]) ([10.239.159.30]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jun 2025 20:26:15 -0700 Message-ID: <118a918f-d549-4a19-8636-3bed2a670852@linux.intel.com> Date: Mon, 16 Jun 2025 11:25:16 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 05/14] iommufd: Return EOPNOTSUPP for failures due to driver bugs To: Nicolin Chen , jgg@nvidia.com, kevin.tian@intel.com Cc: will@kernel.org, robin.murphy@arm.com, joro@8bytes.org, praan@google.com, yi.l.liu@intel.com, peterz@infradead.org, jsnitsel@redhat.com, linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, patches@lists.linux.dev References: <623bb6f0e8fdd7b9c5745a2f99f280163f9f1f5a.1749882255.git.nicolinc@nvidia.com> Content-Language: en-US From: Baolu Lu In-Reply-To: <623bb6f0e8fdd7b9c5745a2f99f280163f9f1f5a.1749882255.git.nicolinc@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250615_202619_932419_DB91AFBB X-CRM114-Status: UNSURE ( 5.45 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 6/14/25 14:35, Nicolin Chen wrote: > It's more accurate to report EOPNOTSUPP when an ioctl failed due to driver > bug, since there is nothing wrong with the user space side. > > Signed-off-by: Nicolin Chen Reviewed-by: Lu Baolu