From patchwork Wed Mar 24 20:48:22 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 88052 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o2OKoOeF032467 for ; Wed, 24 Mar 2010 20:50:24 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933049Ab0CXUuQ (ORCPT ); Wed, 24 Mar 2010 16:50:16 -0400 Received: from cantor2.suse.de ([195.135.220.15]:34519 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932974Ab0CXUsj (ORCPT ); Wed, 24 Mar 2010 16:48:39 -0400 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.221.2]) by mx2.suse.de (Postfix) with ESMTP id 65AE98672B; Wed, 24 Mar 2010 21:48:38 +0100 (CET) From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org Subject: [PATCH 06/21] KVM: PPC: Don't reload FPU with invalid values Date: Wed, 24 Mar 2010 21:48:22 +0100 Message-Id: <1269463717-18305-7-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.6.0.2 In-Reply-To: <1269463717-18305-1-git-send-email-agraf@suse.de> References: <1269463717-18305-1-git-send-email-agraf@suse.de> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Wed, 24 Mar 2010 20:50:24 +0000 (UTC) diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 400ae0a..029e1be 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -701,6 +701,11 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, return RESUME_GUEST; } + /* We already own the ext */ + if (vcpu->arch.guest_owned_ext & msr) { + return RESUME_GUEST; + } + #ifdef DEBUG_EXT printk(KERN_INFO "Loading up ext 0x%lx\n", msr); #endif