Messages in this thread | | | Subject | Re: [PATCH 1/2] PCI: Introduce PCI_FIXUP_IOMMU | From | Zhangfei Gao <> | Date | Tue, 26 May 2020 23:09:57 +0800 |
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Hi, Christoph
On 2020/5/26 下午10:46, Christoph Hellwig wrote: > On Tue, May 26, 2020 at 07:49:08PM +0800, Zhangfei Gao wrote: >> Some platform devices appear as PCI but are actually on the AMBA bus, >> and they need fixup in drivers/pci/quirks.c handling iommu_fwnode. >> Here introducing PCI_FIXUP_IOMMU, which is called after iommu_fwnode >> is allocated, instead of reusing PCI_FIXUP_FINAL since it will slow >> down iommu probing as all devices in fixup final list will be >> reprocessed. > Who is going to use this? I don't see a single user in the series. We will add iommu fixup in drivers/pci/quirks.c, handling
fwspec->can_stall, which is introduced in
https://www.spinics.net/lists/linux-pci/msg94559.html
Unfortunately, the patch does not catch v5.8, so we have to wait. And we want to check whether this is a right method to solve this issue.
Thanks
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