From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751787AbdJXOy4 (ORCPT ); Tue, 24 Oct 2017 10:54:56 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:23282 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751378AbdJXOyz (ORCPT ); Tue, 24 Oct 2017 10:54:55 -0400 Subject: Re: [PATCH] xen: fix booting ballooned down hvm guest To: Juergen Gross , linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org References: <20171024081050.2441-1-jgross@suse.com> <554ab545-5e74-29c8-0eb7-5db1dcbeb6bb@oracle.com> Cc: hw42@ipsumj.de, stable@vger.kernel.org From: Boris Ostrovsky Message-ID: <8b419db3-8753-be6c-c938-1e2adb210770@oracle.com> Date: Tue, 24 Oct 2017 10:56:26 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/24/2017 10:41 AM, Juergen Gross wrote: > On 24/10/17 16:33, Boris Ostrovsky wrote: >> On 10/24/2017 04:10 AM, Juergen Gross wrote: >>> Commit 96edd61dcf44362d3ef0bed1a5361e0ac7886a63 ("xen/balloon: don't >>> online new memory initially") introduced a regression when booting a >>> HVM domain with memory less than mem-max: instead of ballooning down >>> immediately the system would try to use the memory up to mem-max >>> resulting in Xen crashing the domain. >>> >>> For HVM domains the current size will be reflected in Xenstore node >>> memory/static-max instead of memory/target. >>> >>> Additionally we have to trigger the ballooning process at once. >>> >>> Cc: # 4.13 >>> Fixes: 96edd61dcf44362d3ef0bed1a5361e0ac7886a63 ("xen/balloon: don't >>> online new memory initially") >>> >>> Suggested-by: Boris Ostrovsky >>> Signed-off-by: Juergen Gross >> Reported-by: HW42 > Hmm, is an anonymous Reported-by: tag okay? Oh, I don't know what the rules are for this kind of address. I'd probably still add it but it's up to you. -boris