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Mon, 12 Oct 2026 15:00:42 +0000 (GMT) Received: from [9.61.99.49] (unknown [9.61.99.49]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Mon, 12 Oct 2026 15:00:42 +0000 (GMT) Message-ID: Date: Mon, 12 Oct 2026 11:00:41 -0400 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/3] s390/pci: Add function handle to RPCIT insn trace To: Gerd Bayer , Niklas Schnelle , Heiko Carstens , Benjamin Block , Ramesh Errabolu Cc: Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Gerald Schaefer , "Joerg Roedel (AMD)" , Farhan Ali , Cam Miller , Will Deacon , Robin Murphy , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev References: <20261012-rpcit_trcfh_upstream-v2-0-1812db73dfa5@linux.ibm.com> <20261012-rpcit_trcfh_upstream-v2-3-1812db73dfa5@linux.ibm.com> Content-Language: en-US From: Matthew Rosato In-Reply-To: <20261012-rpcit_trcfh_upstream-v2-3-1812db73dfa5@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDEyMDA1OCBTYWx0ZWRfX6CJkGYHFE/Ue lnLUOYAXVvxE/8NKTLlTy/zuV5m8Gro9XPROfcTCxaBBI7t0F3gKUTwlFje5ZrqWOud4I7Gf5x8 riFFmTz38rFyWWpmzJMACP9AxSk4e4cKTIM7Zb6wxhhWed6jsnA+lpj6Fj9bnhSXAPRWt8MlFQc PtXYf8hrN9WYzDIdqjSG7v+zFtSkcOlxRPgQRoidI0ZyLibaApxucqCbrkVU8PCQP9xBwNc0zPS mGFn71WD1F81h9hjP+gTTgCuLShDUJ3qdS/I6sMNyJbLB+UJfdtxGnf/r8kYiwGz2MQtPoGuayl FLfrXQXBl9SZe3cufVbaRUzkjLDFIw71vDkpG1+sqmhX9KsDPi1trPZOezfH1XX9nOCbJVV9mfN 1Xs3Qd4vL+DHrM/4Pqzlv7ufNkiMoHWAzSw5wbbmjQITgeMzpE8jpNBek/mygdD0i2RvrLSBZx3 L5hBQuUcemIugv3wiKQ== X-Proofpoint-GUID: 6SitaoCJBp5HP-7OBKw9Tvi8c_NVK5Gd X-Proofpoint-ORIG-GUID: 6SitaoCJBp5HP-7OBKw9Tvi8c_NVK5Gd X-Proofpoint-Spam-Info: AW1haW4tMjYxMDEyMDA1OCBTYWx0ZWRfX5q8Ni/4KUoX7 L7rEGFmgxqQvEQaQuxPzc/DVOseGS6tdm0FYLaf5VOIICNct/hkI6nK5vyZlD0vLoqb2FouS7iL MYQoIhk8f4a6a7aqg8QmQkr4tG3295Y= X-Authority-Analysis: v=2.4 cv=btHZl0ai c=1 sm=1 tr=0 ts=6accf61d cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=B2SnNno4fJaH8Yx9rOgA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-12_04,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 phishscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 clxscore=1011 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610120058 On 10/12/26 10:21 AM, Gerd Bayer wrote: > In certain debug situations it would be helpful, if the insn trace for a > failing RPCIT would reveal the PCI function on which this was attempted. > > Introduce a variant of zpci_err_insn_req() called zpci_err_insn_rpcit() > that accepts an IO virtual address and a range parameter together with > the req conveying the function handle. Switch zpci_refresh_trans() to > use that new error trace. > > Signed-off-by: Gerd Bayer > Reviewed-by: Niklas Schnelle Reviewed-by: Matthew Rosato