Re: [PATCH v3 3/3] PCI/MSI: Convert pci_msi_ignore_mask to per MSI domain flag
From: Thomas Gleixner
Date: Tue Mar 25 2025 - 04:11:34 EST
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