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From: Thomas Gleixner <tglx@linutronix.de>
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To: Tobias Schumacher <ts@linux.ibm.com>, Heiko Carstens
 <hca@linux.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, Alexander Gordeev
 <agordeev@linux.ibm.com>, Christian Borntraeger
 <borntraeger@linux.ibm.com>, Sven Schnelle <svens@linux.ibm.com>, Niklas
 Schnelle <schnelle@linux.ibm.com>, Gerald Schaefer
 <gerald.schaefer@linux.ibm.com>, Gerd Bayer <gbayer@linux.ibm.com>, Halil
 Pasic <pasic@linux.ibm.com>, Matthew Rosato <mjrosato@linux.ibm.com>
Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, Tobias
 Schumacher <ts@linux.ibm.com>
Subject: Re: [PATCH v2 1/2] genirq: Change hwirq parameter to irq_hw_number_t
In-Reply-To: <20251117-implement-msi-domain-v2-1-a110ea0721fe@linux.ibm.com>
References: <20251117-implement-msi-domain-v2-0-a110ea0721fe@linux.ibm.com>
 <20251117-implement-msi-domain-v2-1-a110ea0721fe@linux.ibm.com>
Date: Mon, 17 Nov 2025 12:26:26 +0100
Message-ID: <87346c99y5.ffs@tglx>
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On Mon, Nov 17 2025 at 09:59, 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@linux.ibm.com>

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