linux-kernel - Re: [PATCH v4] PCI/ERR: Use pcie_aer_is_native() to judge whether OS owns AER

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Date:   Sun, 14 Aug 2022 03:16:33 +0900
From:   Krzysztof Wilczyński <kw@...ux.com>
To:     Zhuo Chen <chenzhuo.1@...edance.com>
Cc:     ruscur@...sell.cc, oohall@...il.com, bhelgaas@...gle.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com, lukas@...ner.de,
        jan.kiszka@...mens.com, stuart.w.hayes@...il.com,
        linuxppc-dev@...ts.ozlabs.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] PCI/ERR: Use pcie_aer_is_native() to judge whether OS
 owns AER

Hello Zhuo,

> Use pcie_aer_is_native() in place of "host->native_aer ||
> pcie_ports_native" to judge whether OS has native control of AER
> in aer_root_reset() and pcie_do_recovery().
> 
> Replace "dev->aer_cap && (pcie_ports_native || host->native_aer)" in
> get_port_device_capability() with pcie_aer_is_native(), which has no
> functional changes.
> 
> Signed-off-by: Zhuo Chen <chenzhuo.1@...edance.com>
> ---
> Changelog:
> v4:
> - Use pcie_aer_is_native() instead in aer_root_reset().
> v3:
> - Simplify why we use pcie_aer_is_native().
> - Revert modification of pci_aer_clear_nonfatal_status() and comments.
> v2:
> - Add details and note in commit log.
[...]

A similar change has been proposed in the past, and back then, Bjorn had
a few questions and concerns.  Have a look at the entire discussion:

  https://lore.kernel.org/linux-pci/1612490648-44817-1-git-send-email-tanxiaofei@huawei.com/

If you think that the proposed changes are fine and can address some of
Bjorn's concerns, then it would be great.

Thank you in advance!

	Krzysztof