From patchwork Thu Nov 7 17:02:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leonardo Bras X-Patchwork-Id: 1191315 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=kvm-ppc-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4788qv4N6Pz9sR0 for ; Fri, 8 Nov 2019 04:03:39 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389652AbfKGRDf (ORCPT ); Thu, 7 Nov 2019 12:03:35 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:8608 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389649AbfKGRDe (ORCPT ); Thu, 7 Nov 2019 12:03:34 -0500 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id xA7GslkH043032; Thu, 7 Nov 2019 12:03:23 -0500 Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0a-001b2d01.pphosted.com with ESMTP id 2w4pdejt6b-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Nov 2019 12:03:22 -0500 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id xA7H1Ye1006107; Thu, 7 Nov 2019 17:03:07 GMT Received: from b01cxnp23034.gho.pok.ibm.com (b01cxnp23034.gho.pok.ibm.com [9.57.198.29]) by ppma02wdc.us.ibm.com with ESMTP id 2w41ujt4mx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Nov 2019 17:03:07 +0000 Received: from b01ledav005.gho.pok.ibm.com (b01ledav005.gho.pok.ibm.com [9.57.199.110]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xA7H36o525166144 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 7 Nov 2019 17:03:06 GMT Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C2781AE05F; Thu, 7 Nov 2019 17:03:06 +0000 (GMT) Received: from b01ledav005.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A8342AE060; Thu, 7 Nov 2019 17:03:05 +0000 (GMT) Received: from LeoBras.br.ibm.com (unknown [9.18.235.40]) by b01ledav005.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 7 Nov 2019 17:03:05 +0000 (GMT) From: Leonardo Bras To: kvm-ppc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Cc: Leonardo Bras , Paul Mackerras , Benjamin Herrenschmidt , Michael Ellerman Subject: [PATCH v2 3/4] powerpc/kvm/book3e: Replace current->mm by kvm->mm Date: Thu, 7 Nov 2019 14:02:57 -0300 Message-Id: <20191107170258.36379-4-leonardo@linux.ibm.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191107170258.36379-1-leonardo@linux.ibm.com> References: <20191107170258.36379-1-leonardo@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-11-07_05:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1910280000 definitions=main-1911070159 Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm-ppc@vger.kernel.org Given that in kvm_create_vm() there is: kvm->mm = current->mm; And that on every kvm_*_ioctl we have: if (kvm->mm != current->mm) return -EIO; I see no reason to keep using current->mm instead of kvm->mm. By doing so, we would reduce the use of 'global' variables on code, relying more in the contents of kvm struct. Signed-off-by: Leonardo Bras --- arch/powerpc/kvm/booke.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index be9a45874194..fd7bdb4f8f87 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -775,7 +775,7 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) debug = current->thread.debug; current->thread.debug = vcpu->arch.dbg_reg; - vcpu->arch.pgdir = current->mm->pgd; + vcpu->arch.pgdir = vcpu->kvm->mm->pgd; kvmppc_fix_ee_before_entry(); ret = __kvmppc_vcpu_run(kvm_run, vcpu);