From: Yury Murashka <yurypm@arista.com>
To: bhelgaas@google.com
Cc: corbet@lwn.net, skhan@linuxfoundation.org,
linux-pci@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, Yury Murashka <yurypm@arista.com>
Subject: [PATCH 0/2] PCI: Add boot options to disable DPC and AER recovery
Date: Tue, 2 Jun 2026 10:55:56 +0000 [thread overview]
Message-ID: <20260602105558.1799563-1-yurypm@arista.com> (raw)
On large modular systems with a complex PCIe tree, the default kernel
AER recovery and DPC behavior could cause unexpected side effects.
Sometimes it would be nice to have the option to keep the system in an
unmodified state and be able to handle PCIe errors from userspace.
This series adds two new PCI kernel boot options:
pci=noaer_recovery - Disable AER error recovery while still clearing
error status bits
pci=nodpc - Disable PCI Downstream Port Containment entirely
Yury Murashka (2):
PCI: Add pci=noaer_recovery kernel boot option
PCI: Add pci=nodpc kernel boot option
Documentation/admin-guide/kernel-parameters.txt | 7 +++++++
drivers/pci/pci.c | 4 ++++
drivers/pci/pci.h | 4 ++++
drivers/pci/pcie/dpc.c | 16 +++++++++++++---
drivers/pci/pcie/err.c | 15 +++++++++++++++
5 files changed, 43 insertions(+), 3 deletions(-)
base-commit: 6f3ed7fec72fc8979b2a8c7219c0a9fcfc8d07b5
--
2.51.0
next reply other threads:[~2026-06-02 10:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-02 10:55 Yury Murashka [this message]
2026-06-02 10:55 ` [PATCH 1/2] PCI: Add pci=noaer_recovery kernel boot option Yury Murashka
2026-06-02 10:55 ` [PATCH 2/2] PCI: Add pci=nodpc " Yury Murashka
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