Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33CDDC6379F for ; Tue, 7 Feb 2023 18:37:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229675AbjBGSht (ORCPT ); Tue, 7 Feb 2023 13:37:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231128AbjBGShk (ORCPT ); Tue, 7 Feb 2023 13:37:40 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 96A5B4489; Tue, 7 Feb 2023 10:37:36 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B9ACA1042; Tue, 7 Feb 2023 10:38:18 -0800 (PST) Received: from bogus (unknown [10.57.10.143]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D44203F71E; Tue, 7 Feb 2023 10:37:32 -0800 (PST) Date: Tue, 7 Feb 2023 18:37:29 +0000 From: Sudeep Holla To: Saurabh Singh Sengar Cc: Rob Herring , krzysztof.kozlowski+dt@linaro.org, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, daniel.lezcano@linaro.org, tglx@linutronix.de, virtualization@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hyperv@vger.kernel.org, mikelley@microsoft.com, Sudeep Holla , ssengar@microsoft.com Subject: Re: [PATCH v2 0/6] Device tree support for Hyper-V VMBus driver Message-ID: <20230207183729.ytqbikaxnurs2iet@bogus> References: <1675188609-20913-1-git-send-email-ssengar@linux.microsoft.com> <20230201020449.GC20379@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230201020449.GC20379@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 31, 2023 at 06:04:49PM -0800, Saurabh Singh Sengar wrote: > > We are working on a solution where kernel is booted without ACPI tables to keep > the overall system's memory footprints slim and possibly faster boot time. > We have tested this by enabling CONFIG_OF for x86. > Very interesting. Do you comparison on how slow/fast DT version w.r.t ACPI and similarly for the memory footprint ? It would be good to add those information as well. I know some systems just use ACPI static tables as they don't run ACPICA runtime interpretter, was that experimented as well or it wasn't used due to some specific(details please) limitations without it. > I can add this info in cover letter in next version. Yes please. -- Regards, Sudeep