linux-kernel - Re: [RFC PATCH v3 03/17] PCI: Make pci_create_root_bus() declare its reliance on MSI domains

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Message-ID: <20231226235602.GA1483795@bhelgaas>
Date: Tue, 26 Dec 2023 17:56:02 -0600
From: Bjorn Helgaas <helgaas@...nel.org>
To: Sunil V L <sunilvl@...tanamicro.com>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-riscv@...ts.infradead.org, linux-acpi@...r.kernel.org,
	linux-pci@...r.kernel.org, Marc Zyngier <maz@...nel.org>,
	Albert Ou <aou@...s.berkeley.edu>, Haibo Xu <haibo1.xu@...el.com>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Anup Patel <anup@...infault.org>,
	Björn Töpel <bjorn@...nel.org>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Jones <ajones@...tanamicro.com>,
	Will Deacon <will@...nel.org>, Len Brown <lenb@...nel.org>
Subject: Re: [RFC PATCH v3 03/17] PCI: Make pci_create_root_bus() declare its
 reliance on MSI domains

On Tue, Dec 19, 2023 at 11:15:12PM +0530, Sunil V L wrote:
> Similar to [1], declare this dependency for PCI probe in ACPI based
> flow.

It would be better to refer to this as 9ec37efb8783 ("PCI/MSI: Make
pci_host_common_probe() declare its reliance on MSI domains") instead
of a link to the mailing list archives.

The git SHA1 is part of the git repo, and git can tell us where that
SHA1 is included.  The lore URL is external and doesn't say anything
about what happened to the patch.

> This is required especially for RISC-V platforms where MSI controller
> can be absent.
> 
> [1] - https://lore.kernel.org/all/20210330151145.997953-12-maz@kernel.org/