From: Valentin Schneider <valentin.schneider@arm.com>
To: Marc Zyngier <maz@kernel.org>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Thomas Gleixner <tglx@linutronix.de>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Vincenzo Frascino <vincenzo.frascino@arm.com>
Subject: Re: [RFC PATCH v2 08/10] irqchip/gic-v3-its: Use irq_chip_ack_parent()
Date: Tue, 01 Jun 2021 11:25:33 +0100 [thread overview]
Message-ID: <87r1hlg9uq.mognet@arm.com> (raw)
In-Reply-To: <87y2c0s748.wl-maz@kernel.org>
On 27/05/21 13:17, Marc Zyngier wrote:
> On Tue, 25 May 2021 18:32:53 +0100,
> Valentin Schneider <valentin.schneider@arm.com> wrote:
>> o make irq_chip_ack_parent() the default chip->irq_ack() via
>> MSI_FLAG_USE_DEF_CHIP_OPS.
>
> Seem like a reasonable approach: how about a custom irq_ack() callback
> that iterates over the hierarchy until it finds an a non-NULL entry?
> Flows that don't use ack won't be impacted, users that need ack will
> provide one if they want, and the default will do something slightly
> slower, but at least unsurprising.
>
Sounds about right!
>> XXX: what about pMSI and fMSI ?
>
> Same thing. They are just bus-specific domains on top of the ITS
> domain, and must follow the same convention.
>
> However, this patch is perfectly acceptable to me (as long as you take
> care of platform and fsl -MSI).
>
Noted.
> Thanks,
>
> M.
>
> --
> Without deviation from the norm, progress is not possible.
next prev parent reply other threads:[~2021-06-01 10:25 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 17:32 [RFC PATCH v2 00/10] irqchip/irq-gic: Optimize masking by leveraging EOImode=1 Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 01/10] genirq: Add chip flag to denote automatic IRQ (un)masking Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 02/10] genirq: Define irq_ack() and irq_eoi() helpers Valentin Schneider
2021-05-27 10:55 ` Marc Zyngier
2021-05-27 10:58 ` Marc Zyngier
2021-06-01 10:25 ` Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 03/10] genirq: Employ ack_irq() and eoi_irq() where relevant Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 04/10] genirq: Add handle_strict_flow_irq() flow handler Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 05/10] genirq: Let purely flow-masked ONESHOT irqs through unmask_threaded_irq() Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 06/10] genirq: Don't mask IRQ within flow handler if IRQ is flow-masked Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 07/10] genirq, irq-gic-v3: Make NMI flow handlers use ->irq_ack() if available Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 08/10] irqchip/gic-v3-its: Use irq_chip_ack_parent() Valentin Schneider
2021-05-27 12:17 ` Marc Zyngier
2021-06-01 10:25 ` Valentin Schneider [this message]
2021-05-25 17:32 ` [RFC PATCH v2 09/10] irqchip/gic: Convert to handle_strict_flow_irq() Valentin Schneider
2021-05-27 12:21 ` Marc Zyngier
2021-06-01 10:25 ` Valentin Schneider
2021-06-15 15:20 ` Valentin Schneider
2021-05-25 17:32 ` [RFC PATCH v2 10/10] irqchip/gic-v3: " Valentin Schneider
2021-05-25 17:34 ` [RFC PATCH v2 00/10] irqchip/irq-gic: Optimize masking by leveraging EOImode=1 Valentin Schneider
2021-05-27 11:17 ` Marc Zyngier
2021-06-01 10:25 ` Valentin Schneider
2021-06-03 15:32 ` Valentin Schneider
2021-06-08 15:29 ` Marc Zyngier
2021-06-08 17:58 ` Lorenzo Pieralisi
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