linux-kernel - Re: [PATCH v9 0/2] genirq: s390/pci: Migrate MSI interrupts to irqdomain API

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Message-ID: <72a43c0479c32de844efe6a809daa53ca6a38d37.camel@linux.ibm.com>
Date: Thu, 04 Dec 2025 12:46:05 +0100
From: Niklas Schnelle <schnelle@...ux.ibm.com>
To: Heiko Carstens <hca@...ux.ibm.com>, Tobias Schumacher <ts@...ux.ibm.com>
Cc: Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev	
 <agordeev@...ux.ibm.com>,
        Christian Borntraeger
 <borntraeger@...ux.ibm.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Gerald
 Schaefer <gerald.schaefer@...ux.ibm.com>,
        Gerd Bayer	
 <gbayer@...ux.ibm.com>, Halil Pasic <pasic@...ux.ibm.com>,
        Matthew Rosato	
 <mjrosato@...ux.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
        linux-s390@...r.kernel.org, Farhan Ali	
 <alifm@...ux.ibm.com>
Subject: Re: [PATCH v9 0/2] genirq: s390/pci: Migrate MSI interrupts to
 irqdomain API

On Thu, 2025-12-04 at 12:20 +0100, Heiko Carstens wrote:
> On Thu, Dec 04, 2025 at 06:05:00AM +0100, Tobias Schumacher wrote:
> > This patch series reworks the PCIe interrupt handling on s390 by
> > migrating it to use a proper MSI parent domain. Introducing a dedicated
> > MSI domain hierarchy aligns s390 PCIe support with the generic Linux IRQ
> > domain model. Currently s390 is one of the last architectures still using
> > the legacy API.
> 
> Is there any reason why this should be squeezed into the current merge
> window? Would it make somebody's life significantly easier?
> 
> Otherwise this has to wait until the next merge window.

>From my s390 PCI point of view it's fine for this to wait until the
next merge window.

Thanks,
Niklas