From patchwork Wed Dec 18 21:54:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 11302243 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5E35A14B7 for ; Wed, 18 Dec 2019 21:59:53 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3A9802146E for ; Wed, 18 Dec 2019 21:59:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Dk0Va8Zw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3A9802146E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=a9C0y/+YYNyqUL9DAlOkteTaISTc4HlDSEv98lbn5vY=; b=Dk0Va8Zwe0vpUX 6ct5oRLA8F2sl1ITjYqDXhfKIQJ/SCoSAD5gw/f4OnzFuDZ//OeZt05C+Lv2eEleaMotwHzC9ZzI0 BqtWeQtRm7Rg7I3lDEU4bqgApkAAEBptmdbu8R7mXeSGb2UWJP9SOLrhqTza7PaeUySaVp1orQ1p9 yAeplWFMpC3t0mCf3iMN8xGj/lktIlUyWp3/QQBDTU4/02M2G2lXoQSL7AqURFyAvai8zkS+41/8e IY9mQVfjSEEO4IJkpFRDHXMrUuOhPi/CYoubG4VKetwthDjkTJ/GwD9Roy7L5rxVr6ODdJRT/vgAk 1xq3Gc67inlG+ecZjDbw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihhMG-0008V9-6O; Wed, 18 Dec 2019 21:59:52 +0000 Received: from mga11.intel.com ([192.55.52.93]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihhIH-0004yV-Hr for linux-arm-kernel@lists.infradead.org; Wed, 18 Dec 2019 21:55:47 +0000 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.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 To: Marc Zyngier , James Hogan , Paul Mackerras , Christian Borntraeger , Janosch Frank , Paolo Bonzini 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191218_135545_634499_637AF8C9 X-CRM114-Status: GOOD ( 11.00 ) X-Spam-Score: -5.0 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [192.55.52.93 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [192.55.52.93 listed in wl.mailspike.net] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kvm-ppc@vger.kernel.org, Wanpeng Li , kvm@vger.kernel.org, David Hildenbrand , Joerg Roedel , Cornelia Huck , linux-mips@vger.kernel.org, Sean Christopherson , linux-kernel@vger.kernel.org, Greg Kurz , James Morse , linux-arm-kernel@lists.infradead.org, Vitaly Kuznetsov , Suzuki K Poulose , kvmarm@lists.cs.columbia.edu, Julien Thierry , Jim Mattson Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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 --- arch/powerpc/kvm/e500mc.c | 2 ++ 1 file changed, 2 insertions(+) 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;