linux-kernel - Re: [PATCH 01/12] genirq: Teach handle_simple_irq() to resend an in-progress interrupt

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Message-ID: <87y0t5tezx.ffs@tglx>
Date: Thu, 03 Jul 2025 18:29:06 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: Marc Zyngier <maz@...nel.org>, linux-pci@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Toan Le <toan@...amperecomputing.com>, Lorenzo Pieralisi
 <lpieralisi@...nel.org>, Krzysztof Wilczyński
 <kwilczynski@...nel.org>,
 Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>,
 Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 01/12] genirq: Teach handle_simple_irq() to resend an
 in-progress interrupt

On Sat, Jun 28 2025 at 18:29, Marc Zyngier wrote:

> It appears that the defect outlined in 9c15eeb5362c4 ("genirq: Allow
> fasteoi handler to resend interrupts on concurrent handling") also
> affects some other less stellar MSI controllers, this time using
> the handle_simple_irq() flow.
>
> Teach this flow about irqd_needs_resend_when_in_progress(). Given
> the invasive nature of this workaround, only this flow is updated.
>
> Signed-off-by: Marc Zyngier <maz@...nel.org>

As I have no conflicting changes pending in this area, this can go
through the PCI tree along with the rest of this lot. Therefore:

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>

Thanks,

        tglx