Re: [PATCH v3 00/10] PCI: endpoint: pci-epf-vntb / NTB: epf: Enable per-doorbell bit handling

[Niklas Cassel]

Hello Koichiro,

On Tue, Mar 24, 2026 at 12:43:53AM +0900, Koichiro Den wrote:
> 
> - configfs knobs mutability and bounds checking, including (but not limited to)
>   db_count.
>   In my opinion, allowing updates after .bind() looks questionable, and
>   returning -EBUSY once bound seems more appropriate. I'm leaning toward
>   handling this as a separate hardening series.

This is in line with what we did for pci-epf-test, see commit:
ffcc4850a161 ("PCI: endpoint: pci-epf-test: Allow overriding default BAR sizes")

but we return EOPNOTSUPP instead of EBUSY.


Kind regards,
Niklas