From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754230Ab1HCOZK (ORCPT ); Wed, 3 Aug 2011 10:25:10 -0400 Received: from mail-qw0-f46.google.com ([209.85.216.46]:33446 "EHLO mail-qw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752077Ab1HCOZH (ORCPT ); Wed, 3 Aug 2011 10:25:07 -0400 From: Eric B Munson To: kvm@vger.kernel.org Cc: kvm-ia64@vger.kernel.org, kvm-ppc@vger.kernel.org, avi@redhat.com, riel@redhat.com, glommer@redhat.com, linux-kernel@vger.kernel.org, aliguori@us.ibm.com, raharper@us.ibm.com, Eric B Munson Subject: [RFC PATCH 0/3] Avoid soft lockup message when KVM is stopped by host Date: Wed, 3 Aug 2011 10:24:58 -0400 Message-Id: <1312381501-27746-1-git-send-email-emunson@mgebm.net> X-Mailer: git-send-email 1.7.4.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This set is just a rough first pass at avoiding soft lockup warnings when a host pauses the execution of a guest. A flag is set by the host in the shared page used for the pvclock when the host goes to stop the guest. When the guest resumes and detects a soft lockup, this flag is checked and cleared and the soft lockup message is skipped. This currently breaks the build for non-x86 architectures but part of what I am looking for here is how to go about adding the function stubs for everything else. Eric B Munson (3): Add flag to indicate that a vm was stopped by the host Add functions to check if the host has stopped the vm Add check for suspended vm in softlockup detector arch/x86/include/asm/pvclock-abi.h | 1 + arch/x86/include/asm/pvclock.h | 3 +++ arch/x86/kernel/kvmclock.c | 12 ++++++++++++ kernel/watchdog.c | 11 +++++++++++ 4 files changed, 27 insertions(+), 0 deletions(-) -- 1.7.4.1