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 44A0610FF for ; Thu, 12 Sep 2024 07:14:06 +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=1726125248; cv=none; b=iW0fQHHXoFdCFNPLB3gid1sj0PRtYyBlmuPsmpKQlCTG4mnJaf+1HX5j9EZD0u0qEyWUuXfuSiA3O/+eIr/0fZ+zrSxCUJ2Pc3X+GkrGQnA36DApjrCzJASTdvWo6V79fufbXtN7a+bc6kNCmxj15c4ho3R5K5HwayTKnQumCAI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726125248; c=relaxed/simple; bh=SjU1eoFadyoK7K7SgDbZ2qGYnI+TpM13Yt6F4ubhqds=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=B6dBoMI0xBt2d/KD+dRW0qNSfbcnrTbJLq81RvnI4yiXRAnfrz/AiDRJa39K3XwomvH65i952IOdj41rmd2+4WmwVL8muxcG3i6p2U2MyLzMu9TIWc9JClXvhupqlzf7VywM2I1bWhiIvlHynLof2qhJpXpIWTkvTxBfm0jyzAY= 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=cKy0UJ8x; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=VuO8wooh; 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="cKy0UJ8x"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="VuO8wooh" Date: Thu, 12 Sep 2024 09:14:03 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1726125245; 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=SjU1eoFadyoK7K7SgDbZ2qGYnI+TpM13Yt6F4ubhqds=; b=cKy0UJ8xegmPpZzYKtRC+nAEUxVNWfAn+HCNCnbTbHrmuNkF8V5a8xbxQODKWpEk5d/38Q D/jypsSEd99y6SIVBD10pxNbKYA1MwTjcWkT9UygAk+dtavsILlUor5uysEvmJr9m+ydUM wq2SgMsADzIUghnY8Is2AbVxhso0/3f6E4+fYMa+ieEl7FyC3PwPHneHXphli/gYsTMvVW Ud2KqGOeygpg0Sehawso++4wougPKyUlYP5BNN0zn+7JPaORDeR424J0hTPpXBFdZjSL02 /hHXUREdsDdhGABDRW3uab9N9SYjXyxFYCBIY+bmsmOUEYzB/79/7KFutWKIqg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1726125245; 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=SjU1eoFadyoK7K7SgDbZ2qGYnI+TpM13Yt6F4ubhqds=; b=VuO8woohehugrOAZS6ZtfomWw3Jj5sA25GDEv820Gl2RxE2kI9odY1bQoy9BLEItzHpzpG pAWJswQ69ItU4aAQ== From: Sebastian Andrzej Siewior To: Mingcong Bai Cc: Thomas Gleixner , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, x86@kernel.org, "H. Peter Anvin" , Albert Ou , Borislav Petkov , Catalin Marinas , Clark Williams , Dave Hansen , Ingo Molnar , John Ogness , Palmer Dabbelt , Paul Walmsley , Petr Mladek , Sergey Senozhatsky , Steven Rostedt , Will Deacon Subject: Re: [PATCH 0/3] Allow to enable PREEMPT_RT. Message-ID: <20240912071403.KMVCGTA2@linutronix.de> References: <20240906111841.562402-1-bigeasy@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On 2024-09-10 10:39:45 [+0800], Mingcong Bai wrote: > Hi Sebastian, Hi Mingcong, > Congratulations, it's been a long time coming! thank you. > I'm wondering, for the architectures not included in the enablement this > time, do we have a readiness checklist/guide for maintainers to refer to? I don't think there is. The plain PREEMPT should work. Then need to follow the checklist for forced-threaded interrupts. Generic code such as GENERIC_ENTRY makes things easier but at least HAVE_POSIX_CPU_TIMERS_TASK_WORK is needed with kvm enabled if my memory serves me right. Everything else is part of generic code. > Thanks in advance. > Best Regards, > Mingcong Bai Sebastian