linux-kernel - Re: [PATCH v4 1/5] genirq/affinity: Add irq_update_affinity

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Date:   Tue, 01 Dec 2020 18:28:10 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     John Garry <john.garry@...wei.com>, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, lenb@...nel.org, rjw@...ysocki.net,
        gregkh@...uxfoundation.org, maz@...nel.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxarm@...wei.com, linux-acpi@...r.kernel.org, dwagner@...e.de
Subject: Re: [PATCH v4 1/5] genirq/affinity: Add irq_update_affinity_desc()

On Tue, Dec 01 2020 at 15:22, John Garry wrote:
> /*
>   * There are certain limitations on when it may be used - attempts to 
> use it for when the kernel is configured for generic IRQ reservation 
> mode (in config GENERIC_IRQ_RESERVATION_MODE) will fail, as it may 
> conflict with managed/non-managed interrupt accounting. In addition, 
> attempts to use it on an interrupt which is already started or which has 
> already been configured as managed will also fail, as these mean invalid 
> init state or double init.
>
> ...
>
> Let me know if not good, if not I'll post again soon.

LGTM