From patchwork Wed Dec 2 11:06:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Borntraeger X-Patchwork-Id: 7744651 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B920B9F1C2 for ; Wed, 2 Dec 2015 11:06:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D908A205CD for ; Wed, 2 Dec 2015 11:06:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE40720534 for ; Wed, 2 Dec 2015 11:06:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757865AbbLBLG1 (ORCPT ); Wed, 2 Dec 2015 06:06:27 -0500 Received: from e06smtp06.uk.ibm.com ([195.75.94.102]:54614 "EHLO e06smtp06.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757139AbbLBLGX (ORCPT ); Wed, 2 Dec 2015 06:06:23 -0500 Received: from localhost by e06smtp06.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 2 Dec 2015 11:06:01 -0000 X-IBM-Helo: d06dlp03.portsmouth.uk.ibm.com X-IBM-MailFrom: borntraeger@de.ibm.com X-IBM-RcptTo: kvm@vger.kernel.org;linux-s390@vger.kernel.org Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id 55A031B08079; Wed, 2 Dec 2015 11:06:27 +0000 (GMT) Received: from d06av06.portsmouth.uk.ibm.com (d06av06.portsmouth.uk.ibm.com [9.149.37.217]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id tB2B61pl7536968; Wed, 2 Dec 2015 11:06:01 GMT Received: from d06av06.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av06.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id tB2B60AK017626; Wed, 2 Dec 2015 04:06:00 -0700 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d06av06.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id tB2B60px017608 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 2 Dec 2015 04:06:00 -0700 Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 25651) id 1D63420F536; Wed, 2 Dec 2015 12:06:00 +0100 (CET) From: Christian Borntraeger To: Paolo Bonzini Cc: KVM , linux-s390 , Cornelia Huck , Jens Freimann , Alexander Graf Subject: [GIT PULL 06/23] KVM: s390: Generalize access to IPTE controls Date: Wed, 2 Dec 2015 12:06:07 +0100 Message-Id: <1449054384-76374-7-git-send-email-borntraeger@de.ibm.com> X-Mailer: git-send-email 2.3.0 In-Reply-To: <1449054384-76374-1-git-send-email-borntraeger@de.ibm.com> References: <1449054384-76374-1-git-send-email-borntraeger@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15120211-0025-0000-0000-0000051A24F8 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: "Eugene (jno) Dvurechenski" This patch generalizes access to the IPTE controls, which is a part of SCA. This is to prepare for upcoming introduction of Extended SCA support. Signed-off-by: Eugene (jno) Dvurechenski Signed-off-by: Christian Borntraeger --- arch/s390/kvm/gaccess.c | 10 +++++----- arch/s390/kvm/kvm-s390.h | 5 +++++ 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/arch/s390/kvm/gaccess.c b/arch/s390/kvm/gaccess.c index a7559f7..06f7edb 100644 --- a/arch/s390/kvm/gaccess.c +++ b/arch/s390/kvm/gaccess.c @@ -259,7 +259,7 @@ struct aste { int ipte_lock_held(struct kvm_vcpu *vcpu) { - union ipte_control *ic = &vcpu->kvm->arch.sca->ipte_control; + union ipte_control *ic = kvm_s390_get_ipte_control(vcpu->kvm); if (vcpu->arch.sie_block->eca & 1) return ic->kh != 0; @@ -274,7 +274,7 @@ static void ipte_lock_simple(struct kvm_vcpu *vcpu) vcpu->kvm->arch.ipte_lock_count++; if (vcpu->kvm->arch.ipte_lock_count > 1) goto out; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); while (old.k) { @@ -296,7 +296,7 @@ static void ipte_unlock_simple(struct kvm_vcpu *vcpu) vcpu->kvm->arch.ipte_lock_count--; if (vcpu->kvm->arch.ipte_lock_count) goto out; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); new = old; @@ -311,7 +311,7 @@ static void ipte_lock_siif(struct kvm_vcpu *vcpu) { union ipte_control old, new, *ic; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); while (old.kg) { @@ -328,7 +328,7 @@ static void ipte_unlock_siif(struct kvm_vcpu *vcpu) { union ipte_control old, new, *ic; - ic = &vcpu->kvm->arch.sca->ipte_control; + ic = kvm_s390_get_ipte_control(vcpu->kvm); do { old = READ_ONCE(*ic); new = old; diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h index 1e70e00..844f711 100644 --- a/arch/s390/kvm/kvm-s390.h +++ b/arch/s390/kvm/kvm-s390.h @@ -340,4 +340,9 @@ void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); +/* support for Basic/Extended SCA handling */ +static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm) +{ + return &kvm->arch.sca->ipte_control; +} #endif