From patchwork Fri May 30 12:42:41 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Graf X-Patchwork-Id: 354149 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 6E2D71400F5 for ; Fri, 30 May 2014 22:44:46 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755855AbaE3Mol (ORCPT ); Fri, 30 May 2014 08:44:41 -0400 Received: from cantor2.suse.de ([195.135.220.15]:34282 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755438AbaE3MnE (ORCPT ); Fri, 30 May 2014 08:43:04 -0400 Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E9CEEAD56; Fri, 30 May 2014 12:42:57 +0000 (UTC) From: Alexander Graf To: kvm-ppc@vger.kernel.org Cc: kvm@vger.kernel.org, pbonzini@redhat.com, mtosatti@redhat.com, "Aneesh Kumar K.V" Subject: [PULL 26/41] KVM: PPC: BOOK3S: Always use the saved DAR value Date: Fri, 30 May 2014 14:42:41 +0200 Message-Id: <1401453776-55285-27-git-send-email-agraf@suse.de> X-Mailer: git-send-email 1.8.1.4 In-Reply-To: <1401453776-55285-1-git-send-email-agraf@suse.de> References: <1401453776-55285-1-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: "Aneesh Kumar K.V" Although it's optional, IBM POWER cpus always had DAR value set on alignment interrupt. So don't try to compute these values. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Alexander Graf --- arch/powerpc/kvm/book3s_emulate.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 9bdff15..61f38eb 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -676,6 +676,12 @@ u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst) ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst) { +#ifdef CONFIG_PPC_BOOK3S_64 + /* + * Linux's fix_alignment() assumes that DAR is valid, so can we + */ + return vcpu->arch.fault_dar; +#else ulong dar = 0; ulong ra = get_ra(inst); ulong rb = get_rb(inst); @@ -700,4 +706,5 @@ ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst) } return dar; +#endif }