linux-kernel - Re: [PATCH v2 0/3] powerpc: Cleanup and convert to MSI parent domain

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Message-ID: <175764920913.610338.16071353255211421986.b4-ty@linux.ibm.com>
Date: Fri, 12 Sep 2025 09:26:08 +0530
From: Madhavan Srinivasan <maddy@...ux.ibm.com>
To: Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>,
        Gautam Menghani <gautam@...ux.ibm.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, Nam Cao <namcao@...utronix.de>
Subject: Re: [PATCH v2 0/3] powerpc: Cleanup and convert to MSI parent domain

On Mon, 11 Aug 2025 11:28:53 +0200, Nam Cao wrote:
> The initial implementation of PCI/MSI interrupt domains in the hierarchical
> interrupt domain model used a shortcut by providing a global PCI/MSI
> domain.
> 
> This works because the PCI/MSI[X] hardware is standardized and uniform, but
> it violates the basic design principle of hierarchical interrupt domains:
> Each hardware block involved in the interrupt delivery chain should have a
> separate interrupt domain.
> 
> [...]

Applied to powerpc/next.

[1/3] powerpc/xive: Untangle xive from child interrupt controller drivers
      https://git.kernel.org/powerpc/c/cc0cc23babc979e399f34f53e4bccf702a389558
[2/3] powerpc/powernv/pci: Switch to use msi_create_parent_irq_domain()
      https://git.kernel.org/powerpc/c/f0ac60e6e311062f1a452d93376055787db4b070
[3/3] powerpc/pseries/msi: Switch to msi_create_parent_irq_domain()
      https://git.kernel.org/powerpc/c/daaa574aba6f9c683408b58a7ab2dc775ece2f98

Thanks