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Wed, 30 Jul 2025 11:21:10 GMT Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 808E15805E; Wed, 30 Jul 2025 11:21:10 +0000 (GMT) Received: from smtpav02.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A601B5805A; Wed, 30 Jul 2025 11:21:07 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by smtpav02.dal12v.mail.ibm.com (Postfix) with ESMTP; Wed, 30 Jul 2025 11:21:07 +0000 (GMT) From: Niklas Schnelle Subject: [PATCH v3 0/2] PCI/ERR: s390/pci: Use pci_uevent_ers() in PCI recovery Date: Wed, 30 Jul 2025 13:20:56 +0200 Message-Id: <20250730-add_err_uevents-v3-0-540b158c070f@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIABgAimgC/2XN3wqCMBTH8VeRXTfZvzbtqveIkLkdc5AzNh2G+ O6pBEFefn9wPmdGEYKDiC7ZjAIkF13v1+CnDJlW+wdgZ9dGjLAzEVRhbW0FIVQjJPBDxLIprLD KACkNWq9eARo37eLtvnbr4tCH9/4g0W39WkwcrEQxxZwXwspaqdLI69P5ccpd3eWm79DmJfYzJ ONHg2GCNdfMNAUoSu2/sSzLBzzpMWH2AAAA X-Change-ID: 20250417-add_err_uevents-6f8d4d7ce09c To: Bjorn Helgaas , Lukas Wunner , Mahesh J Salgaonkar Cc: Linas Vepstas , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Manivannan Sadhasivam , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Peter Oberparleiter , Matthew Rosato , "Oliver O'Halloran" , Sinan Kaya , linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Niklas Schnelle , Keith Busch X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; 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In developing this I noticed that pci_uevent_ers() ignores PCI_ERS_RESULT_NEED_RESET. I think this will result in AER not generating a uevent at the beginning of recovery if drivers request a reset via the voting on error_detected() returns. This is fixed in the first patch and relied upon by the s390 recovery code as it also uses the result of error_detected() though with one device/driver at a time. Thanks, Niklas Signed-off-by: Niklas Schnelle --- Changes in v3: - Reworded cover letter - Rebase on v6.16 - Link to v2: https://lore.kernel.org/r/20250623-add_err_uevents-v2-0-a3a2cf8e711d@linux.ibm.com Changes in v2: - Add a patch fixing pci_uevent_ers() mistakenly ignoring PCI_ERS_RESULT_NEED_RESET - Use the result of error_detected() for initial pci_uevent_ers() - Drop fixes tag in s390 patch - Rebase and re-test on current master - Link to v1: https://lore.kernel.org/r/20250424-add_err_uevents-v1-1-3384d6b779c6@linux.ibm.com --- Niklas Schnelle (2): PCI/AER: Fix missing uevent on recovery when a reset is requested PCI/ERR: s390/pci: Use pci_uevent_ers() in PCI recovery arch/s390/pci/pci_event.c | 3 +++ drivers/pci/pci-driver.c | 3 ++- include/linux/pci.h | 2 +- 3 files changed, 6 insertions(+), 2 deletions(-) --- base-commit: 038d61fd642278bab63ee8ef722c50d10ab01e8f change-id: 20250417-add_err_uevents-6f8d4d7ce09c Best regards, -- Niklas Schnelle