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From: Nicolin Chen <nicolinc@nvidia.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "robin.murphy@arm.com" <robin.murphy@arm.com>,
	"joro@8bytes.org" <joro@8bytes.org>,
	"bhelgaas@google.com" <bhelgaas@google.com>,
	"jgg@nvidia.com" <jgg@nvidia.com>,
	"will@kernel.org" <will@kernel.org>,
	"robin.clark@oss.qualcomm.com" <robin.clark@oss.qualcomm.com>,
	"yong.wu@mediatek.com" <yong.wu@mediatek.com>,
	"matthias.bgg@gmail.com" <matthias.bgg@gmail.com>,
	"angelogioacchino.delregno@collabora.com"
	<angelogioacchino.delregno@collabora.com>,
	"thierry.reding@gmail.com" <thierry.reding@gmail.com>,
	"vdumpa@nvidia.com" <vdumpa@nvidia.com>,
	"jonathanh@nvidia.com" <jonathanh@nvidia.com>,
	"rafael@kernel.org" <rafael@kernel.org>,
	"lenb@kernel.org" <lenb@kernel.org>,
	"Liu, Yi L" <yi.l.liu@intel.com>,
	"baolu.lu@linux.intel.com" <baolu.lu@linux.intel.com>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
	"linux-mediatek@lists.infradead.org"
	<linux-mediatek@lists.infradead.org>,
	"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
	"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"patches@lists.linux.dev" <patches@lists.linux.dev>,
	"Jaroszynski, Piotr" <pjaroszynski@nvidia.com>,
	"Sethi, Vikram" <vsethi@nvidia.com>,
	"helgaas@kernel.org" <helgaas@kernel.org>,
	"etzhao1900@gmail.com" <etzhao1900@gmail.com>
Subject: Re: [PATCH v3 3/5] iommu: Add iommu_get_domain_for_dev_locked() helper
Date: Sun, 31 Aug 2025 16:24:03 -0700	[thread overview]
Message-ID: <aLTZk8sK4WOX9RLk@Asurada-Nvidia> (raw)
In-Reply-To: <aKcwMtPJuFfVA8TF@Asurada-Nvidia>

Hi Kevin,

On Thu, Aug 21, 2025 at 07:41:57AM -0700, Nicolin Chen wrote:
> On Thu, Aug 21, 2025 at 08:07:01AM +0000, Tian, Kevin wrote:
> > Usually the difference between func() and func_locked() is only about
> > whether the caller holds a lock. If they mean to return different
> > domains, may need better naming (though I don't have a good option
> > now)...
> 
> Yea, naming is tricky here :)
> 
> Perhaps it could follow a different pattern:
>     iommu_dev_get_domain_for_driver(struct device *dev);
> 
> With a simple note highlighting to be used by IOMMU drivers in the
> iommu callback functions like attach_dev.

I am keeping this "_locked" naming in v4, as there are only two
places calling this new helper and only one of them is a driver.

Please check v4 and see if you still prefer a different name.

Thanks
Nic

  reply	other threads:[~2025-08-31 23:24 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-11 22:59 [PATCH v3 0/5] Disable ATS via iommu during PCI resets Nicolin Chen
2025-08-11 22:59 ` [PATCH v3 1/5] iommu: Lock group->mutex in iommu_deferred_attach Nicolin Chen
2025-08-15  5:09   ` Baolu Lu
2025-08-15  8:27     ` Tian, Kevin
2025-08-15  8:24   ` Tian, Kevin
2025-08-15 19:26     ` Nicolin Chen
2025-08-18 14:17     ` Jason Gunthorpe
2025-08-18 17:45       ` Nicolin Chen
2025-08-18 18:09         ` Jason Gunthorpe
2025-08-18 18:29           ` Nicolin Chen
2025-08-11 22:59 ` [PATCH v3 2/5] iommu: Pass in gdev to __iommu_device_set_domain Nicolin Chen
2025-08-15  5:18   ` Baolu Lu
2025-08-15  8:29   ` Tian, Kevin
2025-08-11 22:59 ` [PATCH v3 3/5] iommu: Add iommu_get_domain_for_dev_locked() helper Nicolin Chen
2025-08-15  5:28   ` Baolu Lu
2025-08-15 18:48     ` Nicolin Chen
2025-08-18 14:40     ` Jason Gunthorpe
2025-08-19  2:09       ` Baolu Lu
2025-08-15  8:55   ` Tian, Kevin
2025-08-15 18:45     ` Nicolin Chen
2025-08-21  8:07       ` Tian, Kevin
2025-08-21 14:41         ` Nicolin Chen
2025-08-31 23:24           ` Nicolin Chen [this message]
2025-08-18 14:39   ` Jason Gunthorpe
2025-08-18 17:22     ` Nicolin Chen
2025-08-18 23:42       ` Jason Gunthorpe
2025-08-19  5:09         ` Nicolin Chen
2025-08-19 12:52           ` Jason Gunthorpe
2025-08-19 17:22             ` Nicolin Chen
2025-08-21 13:13               ` Jason Gunthorpe
2025-08-21 15:22                 ` Nicolin Chen
2025-08-21 18:37                   ` Jason Gunthorpe
2025-08-22  5:11                     ` Nicolin Chen
2025-08-21  8:11       ` Tian, Kevin
2025-08-21 13:14         ` Jason Gunthorpe
2025-08-22  9:45           ` Tian, Kevin
2025-08-22 13:21             ` Jason Gunthorpe
2025-08-11 22:59 ` [PATCH v3 4/5] iommu: Introduce iommu_dev_reset_prepare() and iommu_dev_reset_done() Nicolin Chen
2025-08-15  5:49   ` Baolu Lu
2025-08-15 20:10     ` Nicolin Chen
2025-08-15  9:14   ` Tian, Kevin
2025-08-15 19:45     ` Nicolin Chen
2025-08-11 22:59 ` [PATCH v3 5/5] pci: Suspend iommu function prior to resetting a device Nicolin Chen
2025-08-19 14:12   ` Ethan Zhao
2025-08-19 21:59     ` Nicolin Chen
2025-08-20  3:18       ` Ethan Zhao
2025-08-22  6:14         ` Nicolin Chen
2025-08-21 13:07       ` Jason Gunthorpe
2025-08-22  6:35         ` Nicolin Chen
2025-08-22 14:08           ` Jason Gunthorpe
2025-08-22 18:50             ` Nicolin Chen
2025-08-28 12:51               ` Jason Gunthorpe
2025-08-28 15:08                 ` Nicolin Chen
2025-08-28 18:46                   ` Jason Gunthorpe
2025-08-28 19:35                     ` Nicolin Chen

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