From patchwork Wed Sep 24 20:43:32 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 393096 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id AF9AF140097 for ; Thu, 25 Sep 2014 06:44:16 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753378AbaIXUoA (ORCPT ); Wed, 24 Sep 2014 16:44:00 -0400 Received: from cantor2.suse.de ([195.135.220.15]:47903 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753072AbaIXUno (ORCPT ); Wed, 24 Sep 2014 16:43:44 -0400 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id A0C15ADA2; Wed, 24 Sep 2014 20:43:39 +0000 (UTC) From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org, pbonzini@redhat.com, Paul Mackerras , Paul Mackerras Subject: [PULL 18/24] KVM: PPC: Book3S HV: Increase timeout for grabbing secondary threads Date: Wed, 24 Sep 2014 22:43:32 +0200 Message-Id: <1411591418-56061-19-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1411591418-56061-1-git-send-email-agraf@suse.de> References: <1411591418-56061-1-git-send-email-agraf@suse.de> Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org From: Paul Mackerras Occasional failures have been seen with split-core mode and migration where the message "KVM: couldn't grab cpu" appears. This increases the length of time that we wait from 1ms to 10ms, which seems to work around the issue. Signed-off-by: Paul Mackerras Signed-off-by: Alexander Graf --- arch/powerpc/kvm/book3s_hv.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 27cced9..4526bef 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1489,7 +1489,7 @@ static void kvmppc_remove_runnable(struct kvmppc_vcore *vc, static int kvmppc_grab_hwthread(int cpu) { struct paca_struct *tpaca; - long timeout = 1000; + long timeout = 10000; tpaca = &paca[cpu];