From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAB862DD60F for ; Mon, 13 Oct 2025 06:28:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760336890; cv=none; b=M7JpFQRNV0bYsucVlWz2TM71OeYNQUEWfkWfFGmnfoIlrx6tKl9rT6leOoUKCFRvDSAKsrxmzTRQr4jxrtsoIbHklw3uB4RSktjwHr5qF7VDvG8rsIPpxSCW7DJOBuXzlIBdB0SlSNLCt2pJpZvYSa/GqZUnpqBiU3gK37t7H9g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760336890; c=relaxed/simple; bh=RxVn2GQXUIB4qbHlA2Cb2iDd9E2/HPk15jFxklapqb4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ehTgSjpaZwkvk/exf2PtU5LcAyCvtOmK00gSzLI12osJ6HaqDCS/GvL44koy0gyRNEM/GmfgLJa51jdHryc503wQiBLrGL3EBOb8kdxGs4U8o8O0WRU7xAk+UHfLMluTv1SCaSzbtarnuYtk95FWbP8lF7ktKjvTxO7a1bYqxCI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=czIlbdGL; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=J7VZgV76; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="czIlbdGL"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="J7VZgV76" Date: Mon, 13 Oct 2025 08:27:54 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1760336876; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C+lWtQFv2S+aF9dYafZDwwatkx8KiFcCSvwTyPK3+vM=; b=czIlbdGLytDRKDs6vAw1zqCbwJNmJ7KQpCPt8XVR8wulBg4k96MFqm8Lt+Jaya3k6EMsK1 uEPXyCP4ME0Ov3QUlD93hqxyRTK39SYQd5ag3rOHnRQ5e76fipBK+wfeYWIYq8UoSYb64j JXlieO4zvxkNab2qcrli8wYGIDeeSLQHdlnUAsi9gsWww2sL8mUCaChrI4eqM7qhyk2BUy 2cFVq48vtzBiTZrc/pOzXjGAN8n4a1Zz9e4anSGgb292FTCXoz8psDLaTQJgdKLV9mYg19 BHg1zPs14f3ApM7RI/60S8BetJ+1u740fQt2Zodz1KmxGFukrgx2mnCgKrQx8g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1760336876; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C+lWtQFv2S+aF9dYafZDwwatkx8KiFcCSvwTyPK3+vM=; b=J7VZgV76qYt6owRDosLVULkFKlKlRzfR8GYsIaVHlsPn5foBNC0b7Cgk0M1btbaoK4gQLz QY3RW4+Mlc29vZBQ== From: Sebastian Andrzej Siewior To: Ryo Takakura Cc: catalin.marinas@arm.com, will@kernel.org, clrkwllms@kernel.org, rostedt@goodmis.org, leitao@debian.org, mark.rutland@arm.com, ardb@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: Re: [PATCH] arm64: use SOFTIRQ_ON_OWN_STACK for enabling softirq stack Message-ID: <20251013062754.6GDxEVID@linutronix.de> References: <20251013013508.74677-1-ryotkkr98@gmail.com> Precedence: bulk X-Mailing-List: linux-rt-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20251013013508.74677-1-ryotkkr98@gmail.com> 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 Reviewed-by: Sebastian Andrzej Siewior Sebastian