linux-kernel - Re: [PATCH] arm64: use SOFTIRQ_ON_OWN

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Message-ID: <20251013062754.6GDxEVID@linutronix.de>
Date: Mon, 13 Oct 2025 08:27:54 +0200
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: Ryo Takakura <ryotkkr98@...il.com>
Cc: catalin.marinas@....com, will@...nel.org, clrkwllms@...nel.org,
	rostedt@...dmis.org, leitao@...ian.org, mark.rutland@....com,
	ardb@...nel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-rt-devel@...ts.linux.dev
Subject: Re: [PATCH] arm64: use SOFTIRQ_ON_OWN_STACK for enabling softirq
 stack

On 2025-10-13 01:35:08 [+0000], Ryo Takakura wrote:
> For those architectures with HAVE_SOFTIRQ_ON_OWN_STACK use
> their dedicated softirq stack when !PREEMPT_RT. This condition
> is ensured by SOFTIRQ_ON_OWN_STACK.
> 
> Let arm64 use SOFTIRQ_ON_OWN_STACK as well to select its
> usage of the stack.
> 
> Signed-off-by: Ryo Takakura <ryotkkr98@...il.com>

Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Sebastian