Re: [PATCH 0/2] Introduce PCI_FIXUP_IOMMU

[Joerg Roedel]

On Mon, Jun 01, 2020 at 12:41:04PM -0500, Bjorn Helgaas wrote:
> I found this [1] from Paul Menzel, which was a slowdown caused by
> quirk_usb_early_handoff().  I think the real problem is individual
> quirks that take a long time.
> 
> The PCI_FIXUP_IOMMU things we're talking about should be fast, and of
> course, they're only run for matching devices anyway.  So I'd rather
> keep them as PCI_FIXUP_FINAL than add a whole new phase.

Okay, so if it is not a performance problem, then I am fine with using
PCI_FIXUP_FINAL. But I dislike calling the fixups from IOMMU code, there
must be a better solution.


Regards,

	Joerg

> [1] https://lore.kernel.org/linux-pci/b1533fd5-1fae-7256-9597-36d3d5de9d2a@xxxxxxxxxxxxx/