linux-kernel - Re: [PATCH v2 00/13] PCI: xgene: Fix and simplify the MSI driver

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Message-ID: <175274579907.217726.8694214469184941348.b4-ty@kernel.org>
Date: Thu, 17 Jul 2025 11:52:38 +0200
From: Lorenzo Pieralisi <lpieralisi@...nel.org>
To: linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Marc Zyngier <maz@...nel.org>
Cc: Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Toan Le <toan@...amperecomputing.com>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Manivannan Sadhasivam <mani@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH v2 00/13] PCI: xgene: Fix and simplify the MSI driver

On Tue, 08 Jul 2025 18:33:51 +0100, Marc Zyngier wrote:
> Having recently dipped into the xgene-msi driver to bring it to use
> the MSI-parent concept, I have realised that some of it was slightly
> sub-par (read: downright broken).
> 
> The driver is playing horrible tricks behind the core code, missing
> proper affinity management, is terribly over-designed for no good
> reason, and despite what MAINTAINERS says, completely unmaintained.
> 
> [...]

Applied to controller/xgene, thanks!

[01/13] genirq: Teach handle_simple_irq() to resend an in-progress interrupt
        https://git.kernel.org/pci/pci/c/fad9efd72b5f
[02/13] PCI: xgene: Defer probing if the MSI widget driver hasn't probed yet
        https://git.kernel.org/pci/pci/c/b3ffac51b6a7
[03/13] PCI: xgene: Drop useless conditional compilation
        https://git.kernel.org/pci/pci/c/1ded8cc14884
[04/13] PCI: xgene: Drop XGENE_PCIE_IP_VER_UNKN
        https://git.kernel.org/pci/pci/c/14a347069f71
[05/13] PCI: xgene-msi: Make per-CPU interrupt setup robust
        https://git.kernel.org/pci/pci/c/84cb4108bf6f
[06/13] PCI: xgene-msi: Drop superfluous fields from xgene_msi structure
        https://git.kernel.org/pci/pci/c/61aeded55e5b
[07/13] PCI: xgene-msi: Use device-managed memory allocations
        https://git.kernel.org/pci/pci/c/a782a50689d6
[08/13] PCI: xgene-msi: Get rid of intermediate tracking structure
        https://git.kernel.org/pci/pci/c/9a7ca398f2d4
[09/13] PCI: xgene-msi: Sanitise MSI allocation and affinity setting
        https://git.kernel.org/pci/pci/c/7112647f6d19
[10/13] PCI: xgene-msi: Resend an MSI racing with itself on a different CPU
        https://git.kernel.org/pci/pci/c/b43fa1b0691b
[11/13] PCI: xgene-msi: Probe as a standard platform driver
        https://git.kernel.org/pci/pci/c/a435be2c3318
[12/13] PCI: xgene-msi: Restructure handler setup/teardown
        https://git.kernel.org/pci/pci/c/f7d447633452
[13/13] cpu/hotplug: Remove unused cpuhp_state CPUHP_PCI_XGENE_DEAD
        https://git.kernel.org/pci/pci/c/8db22d697c52

Thanks,
Lorenzo