From patchwork Tue Jan 28 16:44:11 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aneesh Kumar K.V" X-Patchwork-Id: 314764 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 0F5422C02FF for ; Wed, 29 Jan 2014 03:45:09 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755211AbaA1QpA (ORCPT ); Tue, 28 Jan 2014 11:45:00 -0500 Received: from e28smtp07.in.ibm.com ([122.248.162.7]:54406 "EHLO e28smtp07.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755354AbaA1Qoj (ORCPT ); Tue, 28 Jan 2014 11:44:39 -0500 Received: from /spool/local by e28smtp07.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 28 Jan 2014 22:14:37 +0530 Received: from d28dlp02.in.ibm.com (9.184.220.127) by e28smtp07.in.ibm.com (192.168.1.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Tue, 28 Jan 2014 22:14:34 +0530 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id E0396394003F; Tue, 28 Jan 2014 22:14:33 +0530 (IST) Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s0SGiYZF60424230; Tue, 28 Jan 2014 22:14:34 +0530 Received: from d28av03.in.ibm.com (localhost [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s0SGiWKQ020278; Tue, 28 Jan 2014 22:14:33 +0530 Received: from skywalker.in.ibm.com ([9.79.243.169]) by d28av03.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id s0SGiOq6019933; Tue, 28 Jan 2014 22:14:31 +0530 From: "Aneesh Kumar K.V" To: agraf@suse.de, benh@kernel.crashing.org, paulus@samba.org Cc: linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, "Aneesh Kumar K.V" Subject: [RFC PATCH 06/10] KVM: PPC: BOOK3S: PR: Emulate DPDES register Date: Tue, 28 Jan 2014 22:14:11 +0530 Message-Id: <1390927455-3312-7-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1390927455-3312-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1390927455-3312-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14012816-8878-0000-0000-00000AA35A08 Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org Since we don't support SMT yet, we should always find zero in Directed privileged doorbell exception state register. Signed-off-by: Aneesh Kumar K.V --- arch/powerpc/kvm/book3s_emulate.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 9cf0392e3dcf..7f25adbd2590 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -585,6 +585,12 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val */ *spr_val = 0; break; + case SPRN_DPDES: + /* + * We don't have SMT support for PR yet, hence always return 0 + */ + *spr_val = 0; + break; default: unprivileged: printk(KERN_INFO "KVM: invalid SPR read: %d\n", sprn);