Re: [PATCH v3 3/3] PCI/MSI: Convert pci_msi_ignore_mask to per MSI domain flag

[Thomas Gleixner <tglx@xxxxxxxxxxxxx>]

On Mon, Mar 24 2025 at 20:18, Roger Pau Monné wrote:
> On Mon, Mar 24, 2025 at 07:58:14PM +0100, Daniel Gomez wrote:
>> The issue is that info appears to be uninitialized. So, this worked for me:
>
> Indeed, irq_domain->host_data is NULL, there's no msi_domain_info.  As
> this is x86, I was expecting x86 ot always use
> x86_init_dev_msi_info(), but that doesn't seem to be the case.  I
> would like to better understand this.

Indeed. On x86 this should not happen at all. On architectures, which do
not use (hierarchical) interrupt domains, it will return NULL.

So I really want to understand why this happens on x86 before such a
"fix" is deployed.

Thanks,

        tglx