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Thu, 22 Jul 2021 19:22:59 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.145.166.24]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 22 Jul 2021 19:22:58 +0000 (GMT) Subject: Re: [PATCH v2 0/4] Fix restricted DMA vs swiotlb_exit() To: Will Deacon , iommu@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, Guenter Roeck , Claire Chang , Christoph Hellwig , Robin Murphy , Konrad Rzeszutek Wilk , Nathan Chancellor , Halil Pasic References: <20210720133826.9075-1-will@kernel.org> From: Christian Borntraeger Message-ID: <57e37ef9-c055-d6a6-2244-2c7dd243b5c1@de.ibm.com> Date: Thu, 22 Jul 2021 21:22:58 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 In-Reply-To: <20210720133826.9075-1-will@kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US X-TM-AS-GCONF: 00 X-Proofpoint-GUID: RmyVFFKxtFiVcNLrl6GSKmkPY-rhkY0N X-Proofpoint-ORIG-GUID: RmyVFFKxtFiVcNLrl6GSKmkPY-rhkY0N Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-07-22_09:2021-07-22,2021-07-22 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 bulkscore=0 malwarescore=0 mlxlogscore=999 adultscore=0 impostorscore=0 suspectscore=0 priorityscore=1501 spamscore=0 phishscore=0 clxscore=1011 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107220125 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 20.07.21 15:38, Will Deacon wrote: > Hi again, folks, > > This is version two of the patch series I posted yesterday: > > https://lore.kernel.org/r/20210719123054.6844-1-will@kernel.org > > The only changes since v1 are: > > * Squash patches 2 and 3, amending the commit message accordingly > * Add Reviewed-by and Tested-by tags from Christoph and Claire (thanks!) > > I'd usually leave it a bit longer between postings, but since this fixes > issues with patches in -next I thought I'd spin a new version immediately. > > Cheers, FWIW, I just bisected virtio-errors with secure execution mode qemu-system-s390x: virtio-serial-bus: Unexpected port id 4205794771 for device virtio-serial0.0 to commit 903cd0f315fe426c6a64c54ed389de0becb663dc Author: Claire Chang Date: Thu Jun 24 23:55:20 2021 +0800 swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing Unfortunately this patch series does NOT fix this issue, so it seems that even more things are broken. Any idea what else might be broken? Shall we rather revert these patches from next until we have things under control?