From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752466AbcDRM6j (ORCPT ); Mon, 18 Apr 2016 08:58:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53867 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752339AbcDRM6h (ORCPT ); Mon, 18 Apr 2016 08:58:37 -0400 From: Vitaly Kuznetsov To: "K. Y. Srinivasan" Cc: linux-kernel@vger.kernel.org, Haiyang Zhang , Alex Ng , Cathy Avery , devel@linuxdriverproject.org Subject: Re: [PATCH 0/2] Drivers: hv: balloon: two memory hotplug fixes References: <1459876874-882-1-git-send-email-vkuznets@redhat.com> Date: Mon, 18 Apr 2016 14:58:34 +0200 In-Reply-To: <1459876874-882-1-git-send-email-vkuznets@redhat.com> (Vitaly Kuznetsov's message of "Tue, 5 Apr 2016 19:21:12 +0200") Message-ID: <87lh4b3wg5.fsf@vitty.brq.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Vitaly Kuznetsov writes: > Hi, > > I found an issue (crash) while testing memory hotplug on WS2016TP4 host. > It should be easily reproducible with the following test sequence > (4.6-rc2): > > 1) Start a VM with 4 vCPUs in 4 NUMA nodes, 4096Mb of RAM. > 2) Enable memory auto onlining with > 'echo online > /sys/devices/system/memory/auto_online_blocks' > 3) Wait till hv_balloon driver finishes negotiation. > 4) Increase memory to 8192Mb. > 5) Increase memory to 10000Mb. > > The first patch in the series fixes the issue. While writing it I stumbled > upon an unrelated issue which I fix with PATCH 2. K. Y., it seems these two patches were lost. Should I resend them? > > Please review. > > Vitaly Kuznetsov (2): > Drivers: hv: balloon: don't crash when memory is added in non-sorted > order > Drivers: hv: balloon: reset host_specified_ha_region > > drivers/hv/hv_balloon.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) -- Vitaly