Re: [PATCH 2/2] PCI/MSI: Update MSI-X irq domain hwsize

[Guixin Liu]

在 2026/3/25 21:58, Thomas Gleixner 写道:
> On Wed, Mar 25 2026 at 16:40, Guixin Liu wrote:
> > 在 2026/3/25 15:42, Thomas Gleixner 写道:
> > > So the straight forward solution is to free the MSI domain when the
> > > driver shuts down and tears the MSI interrupts down.
> > Yes, I had also considered this aspect before, I will change the scheme
> > to this, and send another patch, thanks.
> Actually none of that is required. When you update the firmware then
> just let the PCI core rescan the device. That makes way more sense as
> the new firmware might change other config entries as well not only the
> MSI ones.
>
> Thanks,
>
>          tglx
You are right, besides MSI, other attributes may also change.
Removing and then recanning the PCI device is the best approach.

Best Regards,
Guixin Liu