From patchwork Sun May 6 14:20:55 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 157066 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 E549BB6FB7 for ; Mon, 7 May 2012 00:21:09 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753452Ab2EFOVH (ORCPT ); Sun, 6 May 2012 10:21:07 -0400 Received: from cantor2.suse.de ([195.135.220.15]:51766 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753303Ab2EFOVF (ORCPT ); Sun, 6 May 2012 10:21:05 -0400 Received: from relay2.suse.de (unknown [195.135.220.254]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx2.suse.de (Postfix) with ESMTP id 748BFA3DFE; Sun, 6 May 2012 16:21:01 +0200 (CEST) From: Alexander Graf To: kvm-ppc Cc: kvm list , Avi Kivity Subject: [PATCH 11/16] KVM: PPC: Book3S: Enable IRQs during exit handling Date: Sun, 6 May 2012 16:20:55 +0200 Message-Id: <1336314060-32640-12-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <1336314060-32640-1-git-send-email-agraf@suse.de> References: <1336314060-32640-1-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 While handling an exit, we should listen for interrupts and make sure to receive them when they arrive, to keep our latencies low. Signed-off-by: Alexander Graf --- arch/powerpc/kvm/book3s_pr.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index dba282e..d169a0a 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -548,6 +548,9 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, run->exit_reason = KVM_EXIT_UNKNOWN; run->ready_for_interrupt_injection = 1; + /* We get here with MSR.EE=0, so enable it to be a nice citizen */ + __hard_irq_enable(); + trace_kvm_book3s_exit(exit_nr, vcpu); preempt_enable(); kvm_resched(vcpu);