linux-kernel - Re: [PATCH v12 01/25] irqchip/gic-v3: Make gic_irq_domain

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Date: Thu, 15 Feb 2024 11:47:46 +0000
From: Marc Zyngier <maz@...nel.org>
To: Anup Patel <apatel@...tanamicro.com>
Cc: Palmer Dabbelt <palmer@...belt.com>,	Paul Walmsley
 <paul.walmsley@...ive.com>,	Thomas Gleixner <tglx@...utronix.de>,	Rob
 Herring <robh+dt@...nel.org>,	Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>,	Frank Rowand <frowand.list@...il.com>,
	Conor Dooley <conor+dt@...nel.org>,	Björn Töpel
 <bjorn@...nel.org>,	Atish Patra <atishp@...shpatra.org>,	Andrew Jones
 <ajones@...tanamicro.com>,	Sunil V L <sunilvl@...tanamicro.com>,	Saravana
 Kannan <saravanak@...gle.com>,	Anup Patel <anup@...infault.org>,
	linux-riscv@...ts.infradead.org,	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,	devicetree@...r.kernel.org
Subject: Re: [PATCH v12 01/25] irqchip/gic-v3: Make gic_irq_domain_select() robust for zero parameter count

On Sat, 27 Jan 2024 16:17:29 +0000,
Anup Patel <apatel@...tanamicro.com> wrote:
> 
> From: Thomas Gleixner <tglx@...utronix.de>
> 
> Currently the irqdomain select callback is only invoked when the parameter
> count of the fwspec arguments is not zero. That makes sense because then
> the match is on the firmware node and eventually on the bus_token, which is
> already handled in the core code.
> 
> The upcoming support for per device MSI domains requires to do real bus
> token specific checks in the MSI parent domains with a zero parameter
> count.
> 
> Make the gic-v3 select() callback handle that case.
> 
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Anup Patel <apatel@...tanamicro.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Marc Zyngier <maz@...nel.org>

Acked-by: Marc Zyngier <maz@...nel.org>

	M.

-- 
Without deviation from the norm, progress is not possible.