Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp989783imm; Fri, 17 Aug 2018 09:56:45 -0700 (PDT) X-Google-Smtp-Source: AA+uWPzGYNuVwi8INAlM68rwS3cZdSh7C/GkMjVRKp+qJR4cGLTxp9wY6IZfWNCla0D3IwGs8Vs9 X-Received: by 2002:a17:902:d914:: with SMTP id c20-v6mr4778992plz.65.1534525005025; Fri, 17 Aug 2018 09:56:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1534525004; cv=none; d=google.com; s=arc-20160816; b=J3IYvdegO6gG5nv6yzMdtVR76wXxLcx1KQXhlelgIqrzCigTDhjxhej/fm5wiXgHwd BU9gwUsm1rbcQS9eZQncPZOvHEe3y1lCa9vKHGylXUJXrCN6usrV3HlXEez7lLJK17Vk ocO9iCdQTwGZ1TE+JqbybrQr6HIpMzaD5Sa+SCD6AZog9+Fje+n5UZeR9rwimFHf0Ph0 amV/P/YyCwI1Dp7rZPPsPb5c4CiKsrIUFjCYtSF8DEqj/jMbByaJ5/HQ5fDFrP/sSUjd 8+1CLXXY6p1n0iqDSxw2g3+BjUlZz+wt3EiIenJjPfy4AMCaqV9NNFgsUyz8u1B8jpfX Os2g== 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-transfer-encoding:content-disposition:mime-version :references:message-id:subject:cc:to:from:date :arc-authentication-results; bh=ZPDbw60CSknL/Da5DHrPyQ9Xu7S+bUfg+TrCxL5pQcc=; b=MpQKMN/wn1rNE+UjZYxUOt4w3ntM7+uaPGbqJA35oxqRRyE9mBSJanuCx7Pt5+/5SS yWGI6FJPGtjYy8c8w5+4HJ7NWxl5ziLDTWHIoYZBCQOinbFHqz/I/w4zntp6DvKq2eqI QSrMO+/L9cxlxN1C8g+Gm9YWXdp8ObSRQpYrEHvC8L3ZHjDDS5/sZe+dXEJ24C+rwLNU tI0viULb10VHNtWhNau9hEx4b2JnyK8fAOfxXnZJ3QmJYkxzqQND8YmVPPK8ck2E94Yy SavoroVlaSfbZSW4tB/ZCoSqACPmCeyoJVGyQvkc45iJNzmK6ShcieZs9zo2LmKcMVZP x5DA== ARC-Authentication-Results: i=1; mx.google.com; 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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k4-v6si2535319pfc.328.2018.08.17.09.56.29; Fri, 17 Aug 2018 09:56:44 -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; 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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727994AbeHQT6N (ORCPT + 99 others); Fri, 17 Aug 2018 15:58:13 -0400 Received: from mga03.intel.com ([134.134.136.65]:25267 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727948AbeHQT6N (ORCPT ); Fri, 17 Aug 2018 15:58:13 -0400 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Aug 2018 09:54:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,251,1531810800"; d="scan'208";a="82631089" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.126]) by orsmga001.jf.intel.com with ESMTP; 17 Aug 2018 09:54:03 -0700 Received: by tassilo.localdomain (Postfix, from userid 1000) id 27EC1301B7C; Fri, 17 Aug 2018 09:54:03 -0700 (PDT) Date: Fri, 17 Aug 2018 09:54:03 -0700 From: Andi Kleen To: =?iso-8859-1?Q?Ren=E9?= Rebe Cc: Nick Terrell , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , "linux-kernel@vger.kernel.org" , "x86@kernel.org" , Kernel Team , Chris Mason , Adam Borowski , Julian Andres Klode Subject: Re: [RESEND PATCH v2 0/2] Add support for ZSTD-compressed kernel Message-ID: <20180817165403.GC12066@tassilo.jf.intel.com> References: <20180322012943.4145794-1-terrelln@fb.com> <5B282FAD-EDCF-44C8-A131-A3C6FF3EA84F@fb.com> <3F598446-EA1D-47CE-B7A1-4D3002DA3972@exactcode.com> <8DE2BD14-0C9C-43AF-B9B7-F760F8434B6B@exactcode.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8DE2BD14-0C9C-43AF-B9B7-F760F8434B6B@exactcode.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 17, 2018 at 06:15:45PM +0200, René Rebe wrote: > Hey, > > is there any mainline future for this zstd support? Currently my most favourite compressor for this, and for what it’s worth zstd/initrd now even tested on #t2sde / hp/pa-risc, … https://www.youtube.com/watch?v=MHplOJxnIHk Can you remove some other compressor for the kernel image if you merge this? The "favourite compressor" seems to roughly change every year, so if we keep adding new ones things will get more and more convoluted. Surely zstd is universally better than some existing compressor the kernel already uses for itself for a particular sweet spot? If it isn't it's likely not needed. -Andi