From patchwork Tue Feb 16 03:33:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 1440815 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=kvm-ppc-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Dfmmx5BvPz9sVX for ; Tue, 16 Feb 2021 14:34:41 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229662AbhBPDeY (ORCPT ); Mon, 15 Feb 2021 22:34:24 -0500 Received: from ozlabs.ru ([107.174.27.60]:48836 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229780AbhBPDeW (ORCPT ); Mon, 15 Feb 2021 22:34:22 -0500 Received: from fstn1-p1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 20320AE8020D; Mon, 15 Feb 2021 22:33:09 -0500 (EST) From: Alexey Kardashevskiy To: linuxppc-dev@lists.ozlabs.org Cc: David Gibson , kvm-ppc@vger.kernel.org, Alexey Kardashevskiy Subject: [PATCH kernel 0/2] powerpc/iommu: Stop crashing the host when VM is terminated Date: Tue, 16 Feb 2021 14:33:05 +1100 Message-Id: <20210216033307.69863-1-aik@ozlabs.ru> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org Killing a VM on a host under memory pressure kills a host which is annoying. 1/2 reduces the chances, 2/2 eliminates panic() on ioda2. This is based on sha1 f40ddce88593 Linus Torvalds "Linux 5.11". Please comment. Thanks. Alexey Kardashevskiy (2): powerpc/iommu: Allocate it_map by vmalloc powerpc/iommu: Do not immediately panic when failed IOMMU table allocation arch/powerpc/kernel/iommu.c | 19 ++++++------------- arch/powerpc/platforms/cell/iommu.c | 3 ++- arch/powerpc/platforms/pasemi/iommu.c | 4 +++- arch/powerpc/platforms/powernv/pci-ioda.c | 15 ++++++++------- arch/powerpc/platforms/pseries/iommu.c | 10 +++++++--- arch/powerpc/sysdev/dart_iommu.c | 3 ++- 6 files changed, 28 insertions(+), 26 deletions(-)