From: Lukas Wunner <lukas@wunner.de>
To: LeoLiu-oc <LeoLiu-oc@zhaoxin.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Mahesh J Salgaonkar <mahesh@linux.ibm.com>,
Przemek Kitszel <przemyslaw.kitszel@intel.com>,
Oliver O'Halloran <oohall@gmail.com>,
linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, CobeChen@zhaoxin.com,
ErosZhang@zhaoxin.com, TonyWWang@zhaoxin.com
Subject: Re: [PATCH v2] PCI: dpc: Increase pciehp waiting time for DPC recovery
Date: Thu, 5 Feb 2026 09:54:15 +0100 [thread overview]
Message-ID: <aYRatwSvUG0yQkHd@wunner.de> (raw)
In-Reply-To: <20260204035542.53232-1-LeoLiu-oc@zhaoxin.com>
On Wed, Feb 04, 2026 at 11:55:42AM +0800, LeoLiu-oc wrote:
> For example, The execution of the ice_pci_err_detected() in the ice network
> card driver exceeded the maximum waiting time for DPC recovery, causing the
> pciehp_disable_slot() to be executed which is not needed. From the user's
> point of view, you will see that the ice network card may not be usable and
> could even cause more serious errors, such as a kernel panic. kernel panic
> is caused by a race between pciehp_disable_slot() and pcie_do_recovery().
> In practice, we would observe that the ice network card is in an
> unavailable state and a kernel panic.
Unfortunately v2 was submitted without answering all of the questions
and testing all of the things asked for during review:
https://lore.kernel.org/all/aYBoP-B2E9fp_4YZ@wunner.de/
next prev parent reply other threads:[~2026-02-05 8:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-04 3:55 [PATCH v2] PCI: dpc: Increase pciehp waiting time for DPC recovery LeoLiu-oc
2026-02-05 8:54 ` Lukas Wunner [this message]
2026-02-06 11:07 ` LeoLiu-oc
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