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=-12.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 AD66AC433DB for ; Tue, 30 Mar 2021 10:56:58 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 42BA361983 for ; Tue, 30 Mar 2021 10:56:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 42BA361983 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.103402.197303 (Exim 4.92) (envelope-from ) id 1lRC30-000736-OK; Tue, 30 Mar 2021 10:56:34 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 103402.197303; Tue, 30 Mar 2021 10:56:34 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lRC30-00072z-KK; Tue, 30 Mar 2021 10:56:34 +0000 Received: by outflank-mailman (input) for mailman id 103402; Tue, 30 Mar 2021 10:56:34 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lRC2z-00072u-VX for xen-devel@lists.xenproject.org; Tue, 30 Mar 2021 10:56:34 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id eb895427-854f-4026-ada9-e70496317459; Tue, 30 Mar 2021 10:56:33 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 60747B270; Tue, 30 Mar 2021 10:56:32 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: eb895427-854f-4026-ada9-e70496317459 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1617101792; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Mzh4AUS2vZ+qPPfhiYoXdNt2AuTRm1PP69Kf/uH5ll4=; b=fkTb009PyvjW0A7KUA/obWkpdn+Ux80/T9SfVAxH+kZ50suOAH7xfIDH+9I4riqgP5GKuc jXu2MGCB4pNrosdaFgLHox4PGhOnAtj1NTFV9mL+LFWqxsU/Hn97CWAtPPnxQIRA7uG/Tb WJQECx0mW1mTtiy+3QIjlmQ+A3mcOEQ= Subject: Re: [PATCH v2 for-4.15 3/7] CHANGELOG.md: Add dom0/domU zstd compression support To: Julien Grall , Julien Grall Cc: xen-devel , Ian Jackson , Andrew Cooper , George Dunlap References: <20210329161457.345360-1-george.dunlap@citrix.com> <20210329161457.345360-3-george.dunlap@citrix.com> <87E259CB-2BB4-4BAE-9916-BE46584E0EF4@citrix.com> From: Jan Beulich Message-ID: <672c88ac-8373-6629-4d2f-0d1e86c103cd@suse.com> Date: Tue, 30 Mar 2021 12:56:31 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit On 30.03.2021 12:14, Julien Grall wrote: > > > On 30/03/2021 11:08, George Dunlap wrote: >> >> >>> On Mar 29, 2021, at 7:54 PM, Julien Grall wrote: >>> >>> Hi George, >>> >>> On Mon, 29 Mar 2021 at 17:15, George Dunlap wrote: >>>> diff --git a/CHANGELOG.md b/CHANGELOG.md >>>> index 8c89212f14..538eae611c 100644 >>>> --- a/CHANGELOG.md >>>> +++ b/CHANGELOG.md >>>> @@ -12,6 +12,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) >>>> - ARM SMMUv3 (Tech Preview) >>>> - Intel Processor Trace support (Tech Preview) >>>> - Named PCI devices for xl/libxl >>>> + - Support for zstd-compressed dom0 and domU kernels >>> >>> Looking at the log, the feature looks x86 only (at least the dom0 part). >> >> Oh, interesting. So what about the following? >> >> - Support for zstd-compressed dom0 (x86) and domU kernels > > Sounds fine to me. Note that I haven't tried zstd-compressed for domu > Kernel on Arm. > > Maybe the author (Jan) can confirm whether this was plumbed in common > libxc code? Well, I've followed the model used for other compression methods. I have no idea what this means or does not mean for Arm; in fact so far I was under the impression that like in the hypervisor decompression support was an x86-only feature, but from what you say I conclude I have been wrong with this. Jan