From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by finch.gentoo.org (Postfix) with ESMTPS id 50820138350 for ; Fri, 6 Mar 2020 22:34:31 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 64C0EE084A; Fri, 6 Mar 2020 22:34:30 +0000 (UTC) Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id E0153E084A for ; Fri, 6 Mar 2020 22:34:29 +0000 (UTC) Received: from oystercatcher.gentoo.org (unknown [IPv6:2a01:4f8:202:4333:225:90ff:fed9:fc84]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTPS id 7085634EF8A for ; Fri, 6 Mar 2020 22:34:28 +0000 (UTC) Received: from localhost.localdomain (localhost [IPv6:::1]) by oystercatcher.gentoo.org (Postfix) with ESMTP id DFBF7101 for ; Fri, 6 Mar 2020 22:34:25 +0000 (UTC) From: "Yixun Lan" To: gentoo-commits@lists.gentoo.org Content-Transfer-Encoding: 8bit Content-type: text/plain; charset=UTF-8 Reply-To: gentoo-dev@lists.gentoo.org, "Yixun Lan" Message-ID: <1583533989.4e1a0667c9be4b76c4eef62be717be4ba288a147.dlan@gentoo> Subject: [gentoo-commits] repo/gentoo:master commit in: app-emulation/xen/ X-VCS-Repository: repo/gentoo X-VCS-Files: app-emulation/xen/xen-4.12.2.ebuild app-emulation/xen/xen-4.13.0-r1.ebuild X-VCS-Directories: app-emulation/xen/ X-VCS-Committer: dlan X-VCS-Committer-Name: Yixun Lan X-VCS-Revision: 4e1a0667c9be4b76c4eef62be717be4ba288a147 X-VCS-Branch: master Date: Fri, 6 Mar 2020 22:34:25 +0000 (UTC) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-commits@lists.gentoo.org X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-Archives-Salt: 37440d20-8070-406b-8d52-bfdc164f0244 X-Archives-Hash: e9f2a726dfcb9705ca72f744403c37f1 commit: 4e1a0667c9be4b76c4eef62be717be4ba288a147 Author: Tomáš Mózes gmail com> AuthorDate: Fri Mar 6 06:40:30 2020 +0000 Commit: Yixun Lan gentoo org> CommitDate: Fri Mar 6 22:33:09 2020 +0000 URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4e1a0667 app-emulation/xen: warn about credit2 scheduler instability Bug: https://bugs.gentoo.org/710140 Closes: https://github.com/gentoo/gentoo/pull/14842 Package-Manager: Portage-2.3.89, Repoman-2.3.20 Signed-off-by: Tomáš Mózes gmail.com> Signed-off-by: Yixun Lan gentoo.org> app-emulation/xen/xen-4.12.2.ebuild | 9 +++++++++ app-emulation/xen/xen-4.13.0-r1.ebuild | 9 +++++++++ 2 files changed, 18 insertions(+) diff --git a/app-emulation/xen/xen-4.12.2.ebuild b/app-emulation/xen/xen-4.12.2.ebuild index ec19a8729db..078c4ede678 100644 --- a/app-emulation/xen/xen-4.12.2.ebuild +++ b/app-emulation/xen/xen-4.12.2.ebuild @@ -153,4 +153,13 @@ pkg_postinst() { elog "You can optionally block the installation of /boot/xen-syms by an entry" elog "in folder /etc/portage/env using the portage's feature INSTALL_MASK" elog "e.g. echo ${msg} > /etc/portage/env/xen.conf" + + ewarn + ewarn "Xen 4.12+ changed the default scheduler to credit2 which can cause" + ewarn "domU lockups on multi-cpu systems. The legacy credit scheduler seems" + ewarn "to work fine." + ewarn + ewarn "Add sched=credit to xen command line options to use the legacy scheduler." + ewarn + ewarn "https://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B" } diff --git a/app-emulation/xen/xen-4.13.0-r1.ebuild b/app-emulation/xen/xen-4.13.0-r1.ebuild index 2c03982f660..7da3187cee2 100644 --- a/app-emulation/xen/xen-4.13.0-r1.ebuild +++ b/app-emulation/xen/xen-4.13.0-r1.ebuild @@ -153,4 +153,13 @@ pkg_postinst() { elog "You can optionally block the installation of /boot/xen-syms by an entry" elog "in folder /etc/portage/env using the portage's feature INSTALL_MASK" elog "e.g. echo ${msg} > /etc/portage/env/xen.conf" + + ewarn + ewarn "Xen 4.12+ changed the default scheduler to credit2 which can cause" + ewarn "domU lockups on multi-cpu systems. The legacy credit scheduler seems" + ewarn "to work fine." + ewarn + ewarn "Add sched=credit to xen command line options to use the legacy scheduler." + ewarn + ewarn "https://wiki.gentoo.org/wiki/Xen#Xen_domU_hanging_with_Xen_4.12.2B" }