linux-kernel - Re: [PATCH 1/2] genirq: Change hwirq parameter to irq_hw_number

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Message-ID: <878qgae5o0.ffs@tglx>
Date: Thu, 13 Nov 2025 08:46:23 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Tobias Schumacher <ts@...ux.ibm.com>, Heiko Carstens
 <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>, Alexander Gordeev
 <agordeev@...ux.ibm.com>, Christian Borntraeger
 <borntraeger@...ux.ibm.com>, Sven Schnelle <svens@...ux.ibm.com>, Niklas
 Schnelle <schnelle@...ux.ibm.com>, Gerald Schaefer
 <gerald.schaefer@...ux.ibm.com>, Gerd Bayer <gbayer@...ux.ibm.com>, Halil
 Pasic <pasic@...ux.ibm.com>, Matthew Rosato <mjrosato@...ux.ibm.com>
Cc: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org, Tobias
 Schumacher <ts@...ux.ibm.com>
Subject: Re: [PATCH 1/2] genirq: Change hwirq parameter to irq_hw_number_t

On Wed, Nov 12 2025 at 16:40, Tobias Schumacher wrote:
> The irqdomain implementation internally represents hardware IRQs as
> irq_hw_number_t, which is defined as unsigned long int. When providing
> an irq_hw_number_t to the generic_handle_domain() functions that expect
> and unsigned int hwirq, this can lead to a loss of information. Change
> the hwirq parameter to irq_hw_number_t to support the full range of
> hwirqs.
>
> Signed-off-by: Tobias Schumacher <ts@...ux.ibm.com>

Assuming this goes through the s390 tree:

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