Message ID | 20191218215530.2280-12-sean.j.christopherson@intel.com |
---|---|
State | Not Applicable |
Headers | show
Return-Path: <kvm-ppc-owner@vger.kernel.org> 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=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47dTS55734z9sS3 for <incoming@patchwork.ozlabs.org>; Thu, 19 Dec 2019 08:59:17 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726773AbfLRV67 (ORCPT <rfc822;incoming@patchwork.ozlabs.org>); Wed, 18 Dec 2019 16:58:59 -0500 Received: from mga02.intel.com ([134.134.136.20]:54826 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726518AbfLRVzi (ORCPT <rfc822;kvm-ppc@vger.kernel.org>); Wed, 18 Dec 2019 16:55:38 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Dec 2019 13:55:37 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,330,1571727600"; d="scan'208";a="222108054" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.202]) by fmsmga001.fm.intel.com with ESMTP; 18 Dec 2019 13:55:36 -0800 From: Sean Christopherson <sean.j.christopherson@intel.com> To: Marc Zyngier <maz@kernel.org>, James Hogan <jhogan@kernel.org>, Paul Mackerras <paulus@ozlabs.org>, Christian Borntraeger <borntraeger@de.ibm.com>, Janosch Frank <frankja@linux.ibm.com>, Paolo Bonzini <pbonzini@redhat.com> Cc: James Morse <james.morse@arm.com>, Julien Thierry <julien.thierry.kdev@gmail.com>, Suzuki K Poulose <suzuki.poulose@arm.com>, David Hildenbrand <david@redhat.com>, Cornelia Huck <cohuck@redhat.com>, Sean Christopherson <sean.j.christopherson@intel.com>, Vitaly Kuznetsov <vkuznets@redhat.com>, Wanpeng Li <wanpengli@tencent.com>, Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-mips@vger.kernel.org, kvm-ppc@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kurz <groug@kaod.org> Subject: [PATCH v2 11/45] KVM: PPC: e500mc: Add build-time assert that vcpu is at offset 0 Date: Wed, 18 Dec 2019 13:54:56 -0800 Message-Id: <20191218215530.2280-12-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20191218215530.2280-1-sean.j.christopherson@intel.com> References: <20191218215530.2280-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: kvm-ppc-owner@vger.kernel.org Precedence: bulk List-ID: <kvm-ppc.vger.kernel.org> X-Mailing-List: kvm-ppc@vger.kernel.org |
Series |
KVM: Refactor vCPU creation
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diff --git a/arch/powerpc/kvm/e500mc.c b/arch/powerpc/kvm/e500mc.c index 318e65c65999..c51f4bb086fd 100644 --- a/arch/powerpc/kvm/e500mc.c +++ b/arch/powerpc/kvm/e500mc.c @@ -308,6 +308,8 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_e500mc(struct kvm *kvm, struct kvm_vcpu *vcpu; int err; + BUILD_BUG_ON(offsetof(struct kvmppc_vcpu_e500, vcpu) != 0); + vcpu_e500 = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); if (!vcpu_e500) { err = -ENOMEM;
In preparation for moving vcpu allocation to common PPC code, add an explicit, albeit redundant, build-time assert to ensure the vcpu member is located at offset 0. The assert is redundant in the sense that kvmppc_core_vcpu_create_e500() contains a functionally identical assert. The motiviation for adding the extra assert is to provide visual confirmation of the correctness of moving vcpu allocation to common code. Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> --- arch/powerpc/kvm/e500mc.c | 2 ++ 1 file changed, 2 insertions(+)