Received: by 2002:a25:4158:0:0:0:0:0 with SMTP id o85csp3236240yba; Tue, 16 Apr 2019 07:24:47 -0700 (PDT) X-Google-Smtp-Source: APXvYqyYR5MlO0+udarLucNtDFKyzoV4qYzeRwM4BZvWg844XjB6fzPlruUeYE0rmQwb/X8r1W+R X-Received: by 2002:aa7:8b12:: with SMTP id f18mr83169535pfd.89.1555424687710; Tue, 16 Apr 2019 07:24:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1555424687; cv=none; d=google.com; s=arc-20160816; b=wIDeFRUDS2p6ENyxzSSQHqbYl5rSbZCj+3BZZ0+bvzydza5/w8UMH4pCtZoSWethn3 TjUtlwksCK/sBRD7pOsEikp+fWCDOOLBAw+vQgamzWEjzHX5ul16FlIOnvcC38YsU2Lp caEoph3m/zgh9veqB42DbZeTqD+L3Rb90kfYFsk1Zy/fMK2LxKM/GLKnplFVWG6iQMpW h5jZDi1sbu84P4u36kSjTlnd1wjwtFmIx+GPwKl3WjcmyHeS1e6jiYVlxOPhvq/nTd3P Bs1CpiO7btoQ2TywkeJqJCx73U1ZxdUdafMU2Wl/InGE3bO0BpU6ucTzH6F8snhzQStW TJlw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature; bh=1kO3Yiong+2481eLcPKaBgJb4vXRG0wPqepVlCkxorc=; b=nqEe/aBi7ShHdHffgRHVpY4rggWxWmMl+OaE5neofj+AMK977V6U1UZHaUktbuSFna /F6JrFeVEENcHzQdq4tRk5UFa2XkZEe424KeWBaWyagBMfaIiLpAA7JMi7Z6yKXN0+f3 M21TEEl4kNwmthTEwGk0xn/f2gdsDNx7foa8+9ohtOIpOyG7GrSohjHdpCZolWekaaDm vZAamZ2L4LWGpbMv8Zes9LIN1I8DcWkI/2jLq6v+I+Eyt3qneLnM76Fm23AVxj3CVU8J W1YWol2kMXC7mbl4dwZCyUrTk9NZ9XTTz3yVM9g1YR5UNUgWSOFsEQ0EjLVZFkwtUmZB BpkA== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=KuvT9NuN; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o35si48077588pgb.551.2019.04.16.07.24.31; Tue, 16 Apr 2019 07:24:47 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=KuvT9NuN; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729522AbfDPOXx (ORCPT + 99 others); Tue, 16 Apr 2019 10:23:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:60246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725861AbfDPOXx (ORCPT ); Tue, 16 Apr 2019 10:23:53 -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 1C121223F9; Tue, 16 Apr 2019 14:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1555424632; bh=MyDUAMdE2UVqG6u26F/4EtyZAVIYop3lVZCXBzWTYMg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=KuvT9NuNvAl5WweHXPb59dmvE1+RXnlpBQkpS5E6S62AEsNHUIhLgSacvHXrzGxa0 ppEEIg77oqFa6Wyyshs7f+e82y2x7qo4fRTzT9r26mlPSlJzYR3hAZA4M7WPbUgziK 5oc/F8Foi+cnTZluWYx8xV2e6o8dMB8GK01O7aUg= Date: Tue, 16 Apr 2019 16:23:50 +0200 From: Greg Kroah-Hartman To: Helge Deller Cc: Linux Kernel Development , stable@vger.kernel.org Subject: Re: [PATCH 4.9 64/76] parisc: Detect QEMU earlier in boot process Message-ID: <20190416142350.GB31920@kroah.com> References: <20190415183707.712011689@linuxfoundation.org> <20190415183726.478117691@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 16, 2019 at 03:50:16PM +0200, Helge Deller wrote: > Hi Greg, > > please do NOT apply this patch to the 4.9 tree. > See below, it was tagged for v4.14+ only. Yes, but I added it to 4.9 because: > > commit d006e95b5561f708d0385e9677ffe2c46f2ae345 upstream. > > > > While adding LASI support to QEMU, I noticed that the QEMU detection in > > the kernel happens much too late. For example, when a LASI chip is found > > by the kernel, it registers the LASI LED driver as well. But when we > > run on QEMU it makes sense to avoid spending unnecessary CPU cycles, so > > we need to access the running_on_QEMU flag earlier than before. > > > > This patch now makes the QEMU detection the fist task of the Linux > > kernel by moving it to where the kernel enters the C-coding. > > > > Fixes: 310d82784fb4 ("parisc: qemu idle sleep support") This commit is in 4.9.76. So why wouldn't it be valid in 4.9.y (with the exception of the fact that it doesn't build...)? thanks, greg k-h