From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AE513C433DF for ; Mon, 17 Aug 2020 17:34:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63F172063A for ; Mon, 17 Aug 2020 17:34:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597685658; bh=JlMazASo7t7j+lxiY0wrEYqEoBjyCQ5tvz9EhUeBBqo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=W9l+aO2NVWYULVazHu+tZBGIbU+uk4aNhzlGBw6pF52WSuZHsdfIFKiCO8RSis7Iy F1pw9YNoefdeAvVsfu1xt/mbWFUpEBu3CRs1e28ZRzAezU38b4zZxfHL8265ahYlv2 nZZJQkP9iCRJlwq2coUdAT4pK31A4CMQw+B1QpY0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730241AbgHQReQ (ORCPT ); Mon, 17 Aug 2020 13:34:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:38748 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388973AbgHQQtG (ORCPT ); Mon, 17 Aug 2020 12:49:06 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7515720674; Mon, 17 Aug 2020 16:49:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597682946; bh=JlMazASo7t7j+lxiY0wrEYqEoBjyCQ5tvz9EhUeBBqo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=W6ooD0DRmdvqTgXKYpVJV6wDmkDHrOPWIkDevMC0CC9xZdc6kVJn+LyRL13dc9Swm NJSYX+iFMkCvpmyuII6JN5/ePhPHLlrhgBLmft8I/dP9uQ5rHyuVxDVTuwr2XETXLI IWZd/YApfXK9CX9HRA7AEms0jry9G+CPrJLICSPQ= Date: Mon, 17 Aug 2020 18:49:24 +0200 From: Greg KH To: "Guilherme G. Piccoli" Cc: jan.kiszka@siemens.com, jbeulich@suse.com, linux-kernel@vger.kernel.org, marc.zyngier@arm.com, stable@vger.kernel.org, Thomas Gleixner , "Guilherme G. Piccoli" , pedro.principeza@canonical.com Subject: Re: [PATCH 4.19 35/47] x86/irq: Seperate unused system vectors from spurious entry again Message-ID: <20200817164924.GA721399@kroah.com> References: <20200817162156.GA715236@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 17, 2020 at 01:43:14PM -0300, Guilherme G. Piccoli wrote: > On 17/08/2020 13:21, Greg KH wrote: > > On Mon, Aug 17, 2020 at 12:36:25PM -0300, Guilherme G. Piccoli wrote: > >> Hi Greg / Thomas and all involved here. First, apologies for > >> necro-bumping this thread, but I'm working a backport of this patch to > >> kernel 4.15 (Ubuntu) and then I noticed we have it on stable, but only > >> in 4.19+. > >> > >> Since the fixes tag presents an old commit (since ~3.19), I'm curious if > >> we have a special reason to not have it on long-term stables, like 4.9 > >> or 4.14. It's a subtle portion of arch code, so I'm afraid I didn't see > >> something that prevents its backport for previous versions. > > > > What is the git commit id of this patch you are referring to, you didn't > > provide any context here :( > > > > thanks, > > > > greg k-h > > > > I'm sorry, I hoped the subject + thread would suffice heh There is no thread here :( > So, the mainline commit is: f8a8fe61fec8 ("x86/irq: Seperate unused > system vectors from spurious entry again") [0]. The backport to 4.19 > stable tree has the following id: fc6975ee932b . Wow, over 1 1/2 years old, can you remember individual patches that long ago? Anyway, did you try to backport the patch to older kernels to see if it was possible and could work? If so, great, please feel free to submit it to the stable@vger.kernel.org list and I will be glad to pick it up. thanks, greg k-h