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=-0.8 required=3.0 tests=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 2D7A1C35242 for ; Mon, 17 Feb 2020 05:31:30 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id ECA2620718 for ; Mon, 17 Feb 2020 05:31:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ECA2620718 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=vega.pgw.jp Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 89C7E6B006C; Mon, 17 Feb 2020 00:31:29 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 84BA96B006E; Mon, 17 Feb 2020 00:31:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 73ACC6B0070; Mon, 17 Feb 2020 00:31:29 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0146.hostedemail.com [216.40.44.146]) by kanga.kvack.org (Postfix) with ESMTP id 579B36B006C for ; Mon, 17 Feb 2020 00:31:29 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id BC5942C94 for ; Mon, 17 Feb 2020 05:31:28 +0000 (UTC) X-FDA: 76498496256.17.copy27_46f42448e6c31 X-HE-Tag: copy27_46f42448e6c31 X-Filterd-Recvd-Size: 1932 Received: from auth.gate-on.net (auth.Gate-On.Net [210.197.74.24]) by imf29.hostedemail.com (Postfix) with ESMTP for ; Mon, 17 Feb 2020 05:31:27 +0000 (UTC) Received: from vega.pgw.jp (w0109-49-135-103-152.uqwimax.jp [49.135.103.152]) by auth.gate-on.net (Postfix) with ESMTP id CAEA9C2661; Mon, 17 Feb 2020 14:31:23 +0900 (JST) Received: from localhost (vega.pgw.jp [10.5.0.30]) by vega.pgw.jp (Postfix) with SMTP id 6AC23A53D; Mon, 17 Feb 2020 14:31:22 +0900 (JST) From: To: bhe@redhat.com Cc: david@redhat.com, bugzilla-daemon@bugzilla.kernel.org, akpm@linux-foundation.org, richardw.yang@linux.intel.com, mhocko@kernel.org, n-horiguchi@ah.jp.nec.com, linux-mm@kvack.org, kkabe@vega.pgw.jp Subject: Re: [Bug 206401] kernel panic on Hyper-V after 5 minutes duetomemoryhot-add In-Reply-To: Your message of "Mon, 17 Feb 2020 12:48:50 +0800". <20200217044850.GD4816@MiWiFi-R3L-srv> X-Mailer: mnews [version 1.22PL5] 2002-11-27(Wed) Date: Mon, 17 Feb 2020 14:31:22 +0900 Message-ID: <200217143122.M0113268@vega.pgw.jp> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: bhe@redhat.com sed in <20200217044850.GD4816@MiWiFi-R3L-srv> >> Sorry, I roughly went through code, didn't get clue. Not sure if David >> have idea about it. >> >> By the way, may I know why you would like to run i386 guest on Hyper-V? >> >> Found people are talking about the 32bit kernel supporting in upstream, >> below is Linus's point of view. >> https://lore.kernel.org/linux-fsdevel/CAHk-=wiGbz3oRvAVFtN-whW-d2F-STKsP1MZT4m_VeycAr1_VQ@mail.gmail.com/ >> Using Hyper-V for testing out a new kernel is convenient and faster before testing it out on a real i386 machine. And I do want bugs squashed; meanwhile "hv_balloon.hot_add=0" will be a workaround. I agree HIGHMEM64G (PAE) is going to be a deprecated feature, but I do miss HIGHMEM4G (needed for 1GB memory support). -- kabe