From: Ethan Zhao <haifeng.zhao@linux.intel.com>
To: Lukas Wunner <lukas@wunner.de>
Cc: bhelgaas@google.com, baolu.lu@linux.intel.com,
dwmw2@infradead.org, will@kernel.org, robin.murphy@arm.com,
linux-pci@vger.kernel.org, iommu@lists.linux.dev,
linux-kernel@vger.kernel.org,
Haorong Ye <yehaorong@bytedance.com>
Subject: Re: [PATCH 1/2] PCI: make pci_dev_is_disconnected() helper public for other drivers
Date: Thu, 14 Dec 2023 08:58:49 +0800 [thread overview]
Message-ID: <31bd82b6-6f7e-4dc4-8cbb-46fa806d699f@linux.intel.com> (raw)
In-Reply-To: <20231213104930.GB31964@wunner.de>
On 12/13/2023 6:49 PM, Lukas Wunner wrote:
> On Tue, Dec 12, 2023 at 10:46:36PM -0500, Ethan Zhao wrote:
>> move pci_dev_is_disconnected() from driver/pci/pci.h to public
>> include/linux/pci.h for other driver's reference.
>> no function change.
> That's merely a prose description of the code. A reader can already
> see from the code what it's doing. You need to explain the *reason*
> for the change instead. E.g.: "Make pci_dev_is_disconnected() public
> so that it can be called from $DRIVER to speed up hot removal
> handling which may otherwise take seconds because of $REASONS."
Yup, why I made it public. then how about
"
Make pci_dev_is_disconnected() public so that it can be called from
Intel vt-d driver to check the device's hotplug removal state when
issue devTLB flush request."
Thanks,
Ethan
>
> Thanks,
>
> Lukas
next prev parent reply other threads:[~2023-12-14 0:59 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-13 3:46 [PATCH RFC 0/2] fix vt-d hard lockup when hotplug ATS capable device Ethan Zhao
2023-12-13 3:46 ` [PATCH 1/2] PCI: make pci_dev_is_disconnected() helper public for other drivers Ethan Zhao
2023-12-13 10:49 ` Lukas Wunner
2023-12-14 0:58 ` Ethan Zhao [this message]
2023-12-21 10:51 ` Lukas Wunner
2023-12-22 2:35 ` Ethan Zhao
2023-12-13 3:46 ` [PATCH 2/2] iommu/vt-d: don's issue devTLB flush request when device is disconnected Ethan Zhao
2023-12-13 10:44 ` Lukas Wunner
2023-12-13 11:54 ` Robin Murphy
2023-12-14 2:40 ` Ethan Zhao
2023-12-21 10:42 ` Lukas Wunner
2023-12-21 11:01 ` Robin Murphy
2023-12-21 11:07 ` Lukas Wunner
2023-12-22 3:20 ` Ethan Zhao
2023-12-14 2:16 ` Ethan Zhao
2023-12-15 0:43 ` Ethan Zhao
2023-12-13 11:59 ` Baolu Lu
2023-12-14 2:26 ` Ethan Zhao
2023-12-15 1:03 ` Ethan Zhao
2023-12-15 1:34 ` Baolu Lu
2023-12-15 1:51 ` Ethan Zhao
-- strict thread matches above, loose matches on Subject: below --
2023-12-20 0:51 [PATCH v4 0/2] fix vt-d hard lockup when hotplug ATS capable device Ethan Zhao
2023-12-20 0:51 ` [PATCH v4 1/2] PCI: make pci_dev_is_disconnected() helper public for other drivers Ethan Zhao
2023-12-20 0:51 ` [PATCH v4 2/2] iommu/vt-d: don's issue devTLB flush request when device is disconnected Ethan Zhao
2023-12-21 10:39 ` Lukas Wunner
2023-12-21 11:01 ` Lukas Wunner
2023-12-22 2:08 ` Ethan Zhao
2023-12-22 3:56 ` Ethan Zhao
2023-12-22 1:56 ` Ethan Zhao
2023-12-22 8:14 ` Lukas Wunner
2023-12-22 9:01 ` Ethan Zhao
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