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[2620:137:e000::1:20]) by mx.google.com with ESMTP id y7-20020aa7d507000000b0051ddc36463dsi2853549edq.629.2023.07.21.17.38.01; Fri, 21 Jul 2023 17:38:24 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20221208 header.b=O+6lv7D0; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231327AbjGUXAm (ORCPT + 99 others); Fri, 21 Jul 2023 19:00:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231252AbjGUXA2 (ORCPT ); Fri, 21 Jul 2023 19:00:28 -0400 Received: from mail-pl1-x649.google.com (mail-pl1-x649.google.com [IPv6:2607:f8b0:4864:20::649]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 488383C0D for ; Fri, 21 Jul 2023 16:00:24 -0700 (PDT) Received: by mail-pl1-x649.google.com with SMTP id d9443c01a7336-1bb7b0b8315so5024525ad.1 for ; Fri, 21 Jul 2023 16:00:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1689980423; x=1690585223; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=N+/CFCalnN5xPq+FJCMcppiU8/rhXPIN/0hig0msSo8=; b=O+6lv7D05Q0OUUA9ynt/KcA/czw0nVCmbf+DG+BCK0K9Z7aCmw2tgEyYalVuedspq8 piJatN1AxWJYSYEWXCgEWV6Lj9WRMaYOQpNFZf/D6YxBGvXXC9sxFeWVnYSsh9PgdALK TI08rE9tC6B2sbC+Jjczj0KDs710pw7/X1Q1ffZt9W4t0WnhvXUr1aVaNL8cXazRCmS1 C0EhZctoNOm/7wdzAXrff4qAVIbwy2Z8bb+Wn7hr5Vao+gofADZJgTNphVeN4r5pIW46 fLax9V/1g5GZUDnUccR06p1tDp+XdU1R4e6QA1byPUciyCipHt9n184iwnlMoLNkuP/D gFtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689980423; x=1690585223; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=N+/CFCalnN5xPq+FJCMcppiU8/rhXPIN/0hig0msSo8=; b=kc85QfgtXFe3pKuaHl/HW6zHMTYXo7Bg4wmkvzHFa/lQiOjbfHzEa4plksgpwhF23k vwMtg9E+VBpQ4EQk53aPSs7zvD9cmq5MMraWpBdrspninCxPWRNnsHdYaSZctQxvEpti ua8i5tTVhpf58+wQZ26G5WlRCRHByNG1jC7bZt3MmGE7NWJ36akRGzo3kKRrUN7qbJ0G UiCG83lF6EOX9s+1HebZP+cagZBdmlPL193/M4lPlDQIbKTz+L9NPN0MZPags9xbKrfs LetpOpt4/Zzf4wWoQPUW/NXEQDZoy8u+HeeK03rx5rZcCPqZtVyGtLFR2XImwjdKgmLK djDg== X-Gm-Message-State: ABy/qLaO23uKa7hGOS+ZKGCvZaa0kwI2Y31X121ns4+knQmd9c/dXQpY tSSPZnhhsShgYevherDjYbIHETf+MHE= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:e74a:b0:1b8:b7fc:9aa1 with SMTP id p10-20020a170902e74a00b001b8b7fc9aa1mr13677plf.1.1689980423625; Fri, 21 Jul 2023 16:00:23 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 21 Jul 2023 16:00:04 -0700 In-Reply-To: <20230721230006.2337941-1-seanjc@google.com> Mime-Version: 1.0 References: <20230721230006.2337941-1-seanjc@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230721230006.2337941-8-seanjc@google.com> Subject: [PATCH v2 7/9] KVM: x86/mmu: Use BUILD_BUG_ON_INVALID() for KVM_MMU_WARN_ON() stub From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Mingwei Zhang , David Matlack , Jim Mattson X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1772079079230278978 X-GMAIL-MSGID: 1772079079230278978 Use BUILD_BUG_ON_INVALID() instead of an empty do-while loop to stub out KVM_MMU_WARN_ON() when CONFIG_KVM_PROVE_MMU=n, that way _some_ build issues with the usage of KVM_MMU_WARN_ON() will be dected even if the kernel is using the stubs, e.g. basic syntax errors will be detected. Signed-off-by: Sean Christopherson --- arch/x86/kvm/mmu/mmu_internal.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h index 40e74db6a7d5..f1ef670058e5 100644 --- a/arch/x86/kvm/mmu/mmu_internal.h +++ b/arch/x86/kvm/mmu/mmu_internal.h @@ -9,7 +9,7 @@ #ifdef CONFIG_KVM_PROVE_MMU #define KVM_MMU_WARN_ON(x) WARN_ON_ONCE(x) #else -#define KVM_MMU_WARN_ON(x) do { } while (0) +#define KVM_MMU_WARN_ON(x) BUILD_BUG_ON_INVALID(x) #endif /* Page table builder macros common to shadow (host) PTEs and guest PTEs. */