From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liming Wang Subject: [PATCH 1/3] kvm tools: add signal placeholder to avoid balloon crash Date: Thu, 11 Aug 2011 13:07:45 +0800 Message-ID: <1313039267-25951-1-git-send-email-walimisdev@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Cc: Sasha Levin , Ingo Molnar , Asias He , To: Pekka Enberg Return-path: Received: from mail.windriver.com ([147.11.1.11]:53875 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751345Ab1HKFYA (ORCPT ); Thu, 11 Aug 2011 01:24:00 -0400 Sender: kvm-owner@vger.kernel.org List-ID: If "kvm run" without balloon option, use "kvm balloon" may crash kvm. Add signal placeholder to avoid this. Signed-off-by: Liming Wang --- tools/kvm/builtin-run.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/tools/kvm/builtin-run.c b/tools/kvm/builtin-run.c index fa5de27..d725834 100644 --- a/tools/kvm/builtin-run.c +++ b/tools/kvm/builtin-run.c @@ -280,6 +280,10 @@ static void handle_sigstop(int sig) kvm_cpu__reboot(); } +static void handle_empty(int sig) +{ +} + static void *kvm_cpu_thread(void *arg) { current_kvm_cpu = arg; @@ -469,6 +473,9 @@ int kvm_cmd_run(int argc, const char **argv, const char *prefix) signal(SIGUSR2, handle_sigusr2); signal(SIGKVMSTOP, handle_sigstop); signal(SIGKVMRESUME, handle_sigusr2); + /* signal placeholder if not enable balloon */ + signal(SIGKVMADDMEM, handle_empty); + signal(SIGKVMDELMEM, handle_empty); nr_online_cpus = sysconf(_SC_NPROCESSORS_ONLN); -- 1.7.0.4