From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (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 9522A13EFE3 for ; Thu, 14 Aug 2025 07:08:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755155315; cv=none; b=ujhEbRi/rp159zP0YhcbjHPVDlDbowUBQbrMjUlL3QxIXcnJTM4Vauf1MVb2AtS572+3EIQMzoXIqyu/2iQInfULXXOwna71jWKoDCUl8UG/iqqWy9D+EJX7HdiruQPUWYDTqoyhusTA1illJXs0DNn/Xt0EseDqwMUZIaZEi2Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755155315; c=relaxed/simple; bh=pGwnRcZu+X4jrVO2K7vT7m5ZrxOpLjNyUuibvmIid2M=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=L0N6Hw+wWT3zu/WjKQ7iVKKcn55zaplpG7AfLOx1KMQGXPFQM/+m8wzPo8JFoWbU6CyVy45BIz4pzdcjNHU8AmuT/g5Yx9f+7mQ+w5d5ZR6cuaEtEovpP2d8XdLOFdL0oeeyuaKT8non8JyKFVQ1ARK+CCBn13niagw0O7e6Boc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=DW7zp/64; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="DW7zp/64" Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 57DKxKPr017125; Thu, 14 Aug 2025 07:08:15 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=YMb0kq rtFP2/Ff7/GRW7Vj/peR9PaMhQIIeDEXlYCjk=; b=DW7zp/64aNBXTmDGMYWbQj EbBaxP/8D6brafV2yPAoWL2GS8Zi42hAOfecPat19P3daqCgiKuL5Z6oVeDYS2/V SaBhl5e2qJkMQX2dYIUYgRa7PI4G8A/OPAAMenwalqYfz4v7ettLItfKrE/CZ0hK uhibHgdxYiJh465E9Ncgkx1MgOn5T9rRt8r53X8s0BnfpxuyxDZxO5d3QxckqSix dA65hQ+fyUKdZ00XCom5ITfKx8YpGFEvY6L1zRyZRKYCLowhwqOrdiie/XZUkC5G KGfZ5Ws/lX8Jgn74NUiRKadJfrWNxYNPo2GYy2uCJnrABPl19+s4TzyoYXludLiA == Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 48dvrp8f6f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Aug 2025 07:08:15 +0000 (GMT) Received: from m0353725.ppops.net (m0353725.ppops.net [127.0.0.1]) by pps.reinject (8.18.1.12/8.18.0.8) with ESMTP id 57E70NrZ017019; Thu, 14 Aug 2025 07:08:14 GMT Received: from ppma22.wdc07v.mail.ibm.com (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 48dvrp8f6c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Aug 2025 07:08:14 +0000 (GMT) Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 57E43iVi026302; Thu, 14 Aug 2025 07:08:13 GMT Received: from smtprelay04.wdc07v.mail.ibm.com ([172.16.1.71]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 48eh21b7q9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 14 Aug 2025 07:08:13 +0000 Received: from smtpav01.dal12v.mail.ibm.com (smtpav01.dal12v.mail.ibm.com [10.241.53.100]) by smtprelay04.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 57E78DZK61931958 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 14 Aug 2025 07:08:13 GMT Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 41D8258057; Thu, 14 Aug 2025 07:08:13 +0000 (GMT) Received: from smtpav01.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BD97158066; Thu, 14 Aug 2025 07:08:10 +0000 (GMT) Received: from [9.87.142.31] (unknown [9.87.142.31]) by smtpav01.dal12v.mail.ibm.com (Postfix) with ESMTP; Thu, 14 Aug 2025 07:08:10 +0000 (GMT) Message-ID: Subject: Re: [PATCH 2/5] PCI/ERR: Fix uevent on failure to recover From: Niklas Schnelle To: Lukas Wunner , Bjorn Helgaas Cc: Riana Tauro , Aravind Iddamsetty , "Sean C. Dardis" , Terry Bowman , Sathyanarayanan Kuppuswamy , Linas Vepstas , Mahesh J Salgaonkar , Oliver OHalloran , Manivannan Sadhasivam , linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org Date: Thu, 14 Aug 2025 09:08:10 +0200 In-Reply-To: <68fc527a380821b5d861dd554d2ce42cb739591c.1755008151.git.lukas@wunner.de> References: <68fc527a380821b5d861dd554d2ce42cb739591c.1755008151.git.lukas@wunner.de> Autocrypt: addr=schnelle@linux.ibm.com; prefer-encrypt=mutual; keydata=mQINBGHm3M8BEAC+MIQkfoPIAKdjjk84OSQ8erd2OICj98+GdhMQpIjHXn/RJdCZLa58k /ay5x0xIHkWzx1JJOm4Lki7WEzRbYDexQEJP0xUia0U+4Yg7PJL4Dg/W4Ho28dRBROoJjgJSLSHwc 3/1pjpNlSaX/qg3ZM8+/EiSGc7uEPklLYu3gRGxcWV/944HdUyLcnjrZwCn2+gg9ncVJjsimS0ro/ 2wU2RPE4ju6NMBn5Go26sAj1owdYQQv9t0d71CmZS9Bh+2+cLjC7HvyTHKFxVGOznUL+j1a45VrVS XQ+nhTVjvgvXR84z10bOvLiwxJZ/00pwNi7uCdSYnZFLQ4S/JGMs4lhOiCGJhJ/9FR7JVw/1t1G9a UlqVp23AXwzbcoV2fxyE/CsVpHcyOWGDahGLcH7QeitN6cjltf9ymw2spBzpRnfFn80nVxgSYVG1d w75ksBAuQ/3e+oTQk4GAa2ShoNVsvR9GYn7rnsDN5pVILDhdPO3J2PGIXa5ipQnvwb3EHvPXyzakY tK50fBUPKk3XnkRwRYEbbPEB7YT+ccF/HioCryqDPWUivXF8qf6Jw5T1mhwukUV1i+QyJzJxGPh19 /N2/GK7/yS5wrt0Lwxzevc5g+jX8RyjzywOZGHTVu9KIQiG8Pqx33UxZvykjaqTMjo7kaAdGEkrHZ dVHqoPZwhCsgQARAQABtChOaWtsYXMgU2NobmVsbGUgPHNjaG5lbGxlQGxpbnV4LmlibS5jb20+iQ JXBBMBCABBAhsBBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAAhkBFiEEnbAAstJ1IDCl9y3cr+Q/Fej CYJAFAmesutgFCQenEYkACgkQr+Q/FejCYJDIzA//W5h3t+anRaztihE8ID1c6ifS7lNUtXr0wEKx Qm6EpDQKqFNP+n3R4A5w4gFqKv2JpYQ6UJAAlaXIRTeT/9XdqxQlHlA20QWI7yrJmoYaF74ZI9s/C 8aAxEzQZ64NjHrmrZ/N9q8JCTlyhk5ZEV1Py12I2UH7moLFgBFZsPlPWAjK2NO/ns5UJREAJ04pR9 XQFSBm55gsqkPp028cdoFUD+IajGtW7jMIsx/AZfYMZAd30LfmSIpaPAi9EzgxWz5habO1ZM2++9e W6tSJ7KHO0ZkWkwLKicrqpPvA928eNPxYtjkLB2XipdVltw5ydH9SLq0Oftsc4+wDR8TqhmaUi8qD Fa2I/0NGwIF8hjwSZXtgJQqOTdQA5/6voIPheQIi0NBfUr0MwboUIVZp7Nm3w0QF9SSyTISrYJH6X qLp17NwnGQ9KJSlDYCMCBJ+JGVmlcMqzosnLli6JszAcRmZ1+sd/f/k47Fxy1i6o14z9Aexhq/UgI 5InZ4NUYhf5pWflV41KNupkS281NhBEpChoukw25iZk0AsrukpJ74x69MJQQO+/7PpMXFkt0Pexds XQrtsXYxLDQk8mgjlgsvWl0xlk7k7rddN1+O/alcv0yBOdvlruirtnxDhbjBqYNl8PCbfVwJZnyQ4 SAX2S9XiGeNtWfZ5s2qGReyAcd2nBna0KU5pa2xhcyBTY2huZWxsZSA8bmlrbGFzLnNjaG5lbGxlQ GlibS5jb20+iQJUBBMBCAA+AhsBBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAFiEEnbAAstJ1IDCl9y 3cr+Q/FejCYJAFAmesuuEFCQenEYkACgkQr+Q/FejCYJCosA/9GCtbN8lLQkW71n/CHR58BAA5ct1 KRYiZNPnNNAiAzjvSb0ezuRVt9H0bk/tnj6pPj0zdyU2bUj9Ok3lgocWhsF2WieWbG4dox5/L1K28 qRf3p+vdPfu7fKkA1yLE5GXffYG3OJnqR7OZmxTnoutj81u/tXO95JBuCSJn5oc5xMQvUUFzLQSbh prIWxcnzQa8AHJ+7nAbSiIft/+64EyEhFqncksmzI5jiJ5edABiriV7bcNkK2d8KviUPWKQzVlQ3p LjRJcJJHUAFzsZlrsgsXyZLztAM7HpIA44yo+AVVmcOlmgPMUy+A9n+0GTAf9W3y36JYjTS+ZcfHU KP+y1TRGRzPrFgDKWXtsl1N7sR4tRXrEuNhbsCJJMvcFgHsfni/f4pilabXO1c5Pf8fiXndCz04V8 ngKuz0aG4EdLQGwZ2MFnZdyf3QbG3vjvx7XDlrdzH0wUgExhd2fHQ2EegnNS4gNHjq82uLPU0hfcr obuI1D74nV0BPDtr7PKd2ryb3JgjUHKRKwok6IvlF2ZHMMXDxYoEvWlDpM1Y7g81NcKoY0BQ3ClXi a7vCaqAAuyD0zeFVGcWkfvxYKGqpj8qaI/mA8G5iRMTWUUUROy7rKJp/y2ioINrCul4NUJUujfx4k 7wFU11/YNAzRhQG4MwoO5e+VY66XnAd+XPyBIlvy0K05pa2xhcyBTY2huZWxsZSA8bmlrbGFzLnNj aG5lbGxlQGdtYWlsLmNvbT6JAlQEEwEIAD4CGwEFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AWIQSds ACy0nUgMKX3Ldyv5D8V6MJgkAUCZ6y64QUJB6cRiQAKCRCv5D8V6MJgkEr/D/9iaYSYYwlmTJELv+ +EjsIxXtneKYpjXEgNnPwpKEXNIpuU/9dcVDcJ10MfvWBPi3sFbIzO9ETIRyZSgrjQxCGSIhlbom4 D8jVzTA698tl9id0FJKAi6T0AnBF7CxyqofPUzAEMSj9ynEJI/Qu8pHWkVp97FdJcbsho6HNMthBl +Qgj9l7/Gm1UW3ZPvGYgU75uB/mkaYtEv0vYrSZ+7fC2Sr/O5SM2SrNk+uInnkMBahVzCHcoAI+6O Enbag+hHIeFbqVuUJquziiB/J4Z2yT/3Ps/xrWAvDvDgdAEr7Kn697LLMRWBhGbdsxdHZ4ReAhc8M 8DOcSWX7UwjzUYq7pFFil1KPhIkHctpHj2Wvdnt+u1F9fN4e3C6lckUGfTVd7faZ2uDoCCkJAgpWR 10V1Q1Cgl09VVaoi6LcGFPnLZfmPrGYiDhM4gyDDQJvTmkB+eMEH8u8V1X30nCFP2dVvOpevmV5Uk onTsTwIuiAkoTNW4+lRCFfJskuTOQqz1F8xVae8KaLrUt2524anQ9x0fauJkl3XdsVcNt2wYTAQ/V nKUNgSuQozzfXLf+cOEbV+FBso/1qtXNdmAuHe76ptwjEfBhfg8L+9gMUthoCR94V0y2+GEzR5nlD 5kfu8ivV/gZvij+Xq3KijIxnOF6pd0QzliKadaFNgGw4FoUeZo0rQhTmlrbGFzIFNjaG5lbGxlIDx uaWtzQGtlcm5lbC5vcmc+iQJUBBMBCAA+AhsBBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAFiEEnbAA stJ1IDCl9y3cr+Q/FejCYJAFAmesuuEFCQenEYkACgkQr+Q/FejCYJC6yxAAiQQ5NAbWYKpkxxjP/ AajXheMUW8EtK7EMJEKxyemj40laEs0wz9owu8ZDfQl4SPqjjtcRzUW6vE6JvfEiyCLd8gUFXIDMS l2hzuNot3sEMlER9kyVIvemtV9r8Sw1NHvvCjxOMReBmrtg9ooeboFL6rUqbXHW+yb4GK+1z7dy+Q 9DMlkOmwHFDzqvsP7eGJN0xD8MGJmf0L5LkR9LBc+jR78L+2ZpKA6P4jL53rL8zO2mtNQkoUO+4J6 0YTknHtZrqX3SitKEmXE2Is0Efz8JaDRW41M43cE9b+VJnNXYCKFzjiqt/rnqrhLIYuoWCNzSJ49W vt4hxfqh/v2OUcQCIzuzcvHvASmt049ZyGmLvEz/+7vF/Y2080nOuzE2lcxXF1Qr0gAuI+wGoN4gG lSQz9pBrxISX9jQyt3ztXHmH7EHr1B5oPus3l/zkc2Ajf5bQ0SE7XMlo7Pl0Xa1mi6BX6I98CuvPK SA1sQPmo+1dQYCWmdQ+OIovHP9Nx8NP1RB2eELP5MoEW9eBXoiVQTsS6g6OD3rH7xIRxRmuu42Z5e 0EtzF51BjzRPWrKSq/mXIbl5nVW/wD+nJ7U7elW9BoJQVky03G0DhEF6fMJs08DGG3XoKw/CpGtMe 2V1z/FRotP5Fkf5VD3IQGtkxSnO/awtxjlhytigylgrZ4wDpSE= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 (3.56.2-1.fc42) Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODEyMDIxOSBTYWx0ZWRfXzCjD85fVrwHC OvPCNnXbwBtnBcIhfSt1fArdsY4V+93oP2bcnwIKCpODlCHkJuAs2311t+nL3qRGaoG2qubDIss /aM5YdewYFK7wfaIZhv7yWFZVe68ne5A+pSQfu+tQxrnjgOb5UiJqDwsnZAnmU3TQFmoaXX5eBV hWvuRdAx8SFzLULaoGmFCNZxda74ShVcbvYRSMJozS35UpTJhDZbIecU/dhV820+fA9C4qfLKcm gvSIF7+cQ7TFaoaK6prRNASQNV4e2puc9BllmHOqJPysYmKLSrJiqQehlVXTnpYUWRLUx7ypZGW T3ll8xx7Ltk0mie3pAoTFujaRxa4jugdsMIljU8h9UZS8Ct4udRVd+CnEbCVUdWvF4cMOt33sIo nNr0GVf1 X-Authority-Analysis: v=2.4 cv=GrpC+l1C c=1 sm=1 tr=0 ts=689d8b5f cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=_iJSEG23MTSNU4P7Lo0A:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: xQvjil14qSW233uYrqC95IWLpydKclx- X-Proofpoint-ORIG-GUID: l-qCMCI6wzS9Gl4rbnnJuOd8OzI3j5Tx X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-13_02,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 adultscore=0 spamscore=0 impostorscore=0 suspectscore=0 phishscore=0 bulkscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508120219 On Wed, 2025-08-13 at 07:11 +0200, Lukas Wunner wrote: > Upon failure to recover from a PCIe error through AER, DPC or EDR, a > uevent is sent to inform user space about disconnection of the bridge > whose subordinate devices failed to recover. >=20 > However the bridge itself is not disconnected. Instead, a uevent should > be sent for each of the subordinate devices. >=20 > Only if the "bridge" happens to be a Root Complex Event Collector or > Integrated Endpoint does it make sense to send a uevent for it (because > there are no subordinate devices). >=20 > Right now if there is a mix of subordinate devices with and without > pci_error_handlers, a BEGIN_RECOVERY event is sent for those with > pci_error_handlers but no FAILED_RECOVERY event is ever sent for them > afterwards. Fix it. >=20 > Fixes: 856e1eb9bdd4 ("PCI/AER: Add uevents in AER and EEH error/resume") > Signed-off-by: Lukas Wunner > Cc: stable@vger.kernel.org # v4.16+ > --- --- snip --- >=20 > +static int report_perm_failure_detected(struct pci_dev *dev, void *data) > +{ > + pci_uevent_ers(dev, PCI_ERS_RESULT_DISCONNECT); > + return 0; > +} > + > static int report_mmio_enabled(struct pci_dev *dev, void *data) > { > struct pci_driver *pdrv; > @@ -272,7 +278,7 @@ pci_ers_result_t pcie_do_recovery(struct pci_dev *dev= , > failed: > pci_walk_bridge(bridge, pci_pm_runtime_put, NULL); > =20 > - pci_uevent_ers(bridge, PCI_ERS_RESULT_DISCONNECT); > + pci_walk_bridge(bridge, report_perm_failure_detected, NULL); > =20 > pci_info(bridge, "device recovery failed\n"); > =20 Thanks for catching this during review of my other error recovery uevent fix! Looks good and I like that you kept the report_*_detected() naming which makes the mismatched symmetry of the existing code quite easy to see. Reviewed-by: Niklas Schnelle