From nobody Mon Feb 9 04:59:04 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C63B0C001DF for ; Sat, 29 Jul 2023 00:49:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229666AbjG2Atx (ORCPT ); Fri, 28 Jul 2023 20:49:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237018AbjG2AtY (ORCPT ); Fri, 28 Jul 2023 20:49:24 -0400 Received: from mail-pl1-x64a.google.com (mail-pl1-x64a.google.com [IPv6:2607:f8b0:4864:20::64a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C25A44B3 for ; Fri, 28 Jul 2023 17:48:47 -0700 (PDT) Received: by mail-pl1-x64a.google.com with SMTP id d9443c01a7336-1bba9a0da10so18241735ad.2 for ; Fri, 28 Jul 2023 17:48:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1690591663; x=1691196463; 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=BH/vnXUYOHXy6b1NYhugXlcJVFxpFBACy6MHTmpwAHEsFt0Tb+2O/PuTM8uyBWxsoQ cd5pWacOlW0dxtb4jtK1Afkp/SxeOcFxaSP0qJc57vUNjKs4X/qRNdaMreb7VlI+ErVC 2rfrkdgt3VGWiDXrrjTxqMkVSfQLkMfdiVA16UsPo8d8xVWwu50tMwFGe4TMQquS5u7N HpNWkop5hN6b/L/CZilAtEUTmFhsYBWaPAkPDoTCqqjp3T6p6gv/vdQamw0Skme2wCHf yDn9ZEPPIsvPqarpWNphc+E34E3RjRHHRHoZgzlk4quBE7XtiCjjBXGnN4b047a43NX6 CAWw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690591663; x=1691196463; 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=W76yYPlx/i4wDYwcqbeZyB3ijoN/h1OS67YuWpPMUf8Vzcft/koom+WaR7owxTxXoW ZkpNv9NtvGszUJQCTQbrqsUc9r+lk/w/SWJsqo0/GzcQ5io2iqZYx+9DG130tFU2jluQ WqGKxhuspHejZrQn+GdUBnfw86bUXBwD2bhj+5VPF0CYLIerxmw/8LCW+5xNskjmfQ9O Qz63J+2RuWCu4BYVM1OKNW/c38Plv/ZzavMn31j8WGeuiidCWmUa7ULCQwJ8jRWkMN7T IqL/roT8bXCsxpokoyj1McF4oI9OBlWYhi2PfG72q0VeP22nE0boNwmwlbbSPx9g2RWe BwHA== X-Gm-Message-State: ABy/qLbTicaytdvfGI8Xx65A5BhYd+UEMXSGXAfIESU5VrIcSzHR5/lH 7k8PIS7ffL7gkXA5rKEjJrXEo3fNPzQ= X-Google-Smtp-Source: APBJJlHTx0tMhdVdj9DHQL2qIu5IwtD1zQZTL75hc9Ut9ZxNuNOuReykzid0E2yHjV5ekXl0GYuOIbK8/6k= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a17:902:e748:b0:1b5:61d3:dae5 with SMTP id p8-20020a170902e74800b001b561d3dae5mr14320plf.1.1690591663061; Fri, 28 Jul 2023 17:47:43 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 28 Jul 2023 17:47:20 -0700 In-Reply-To: <20230729004722.1056172-1-seanjc@google.com> Mime-Version: 1.0 References: <20230729004722.1056172-1-seanjc@google.com> X-Mailer: git-send-email 2.41.0.487.g6d72f3e995-goog Message-ID: <20230729004722.1056172-11-seanjc@google.com> Subject: [PATCH v3 10/12] 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use BUILD_BUG_ON_INVALID() instead of an empty do-while loop to stub out KVM_MMU_WARN_ON() when CONFIG_KVM_PROVE_MMU=3Dn, 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 Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- 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_interna= l.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 =20 /* Page table builder macros common to shadow (host) PTEs and guest PTEs. = */ --=20 2.41.0.487.g6d72f3e995-goog