linux-kernel - Re: [PATCH 1/2] irqchip/gic-v3: Add __gic_get_ppi_index() to find the PPI number from hwirq

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Date:   Fri, 30 Jul 2021 11:47:19 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     James Morse <james.morse@....com>, linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>, Marc Zyngier <maz@...nel.org>
Subject: Re: [PATCH 1/2] irqchip/gic-v3: Add __gic_get_ppi_index() to find the PPI number from hwirq

On 29/07/21 17:27, James Morse wrote:
> gic_get_ppi_index() is a useful concept for ppi partitions, as the GIC
> has two PPI ranges but needs mapping to a single range when used as an
> index in the gic_data.ppi_descs[] array.
>
> Add a double-underscore version which takes just the intid. This will
> be used in the partition domain select and translate helpers to enable
> partition support for the EPPI range.
>
> Signed-off-by: James Morse <james.morse@....com>

Reviewed-by: Valentin Schneider <valentin.schneider@....com>