From nobody Mon Feb 9 06:02:17 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAEDA3DA7FB; Tue, 3 Feb 2026 18:17:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.10 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770142669; cv=none; b=K+rsFZmOZip6fq+sB3TSEslYfbn7TXMq0ejRl2JQoi5UJitG7hmBuUPVtkPX1M+XOnY8BH2h7SIHUOrWIPZXyE7NB3bGqgzoIxQYUlJ3ciuyXImCYIcusp/psJnZi0NTuCAnlJZmQoxLAE7BNCRzo6Nz9+uzzKm4IIYFevg/ksE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770142669; c=relaxed/simple; bh=VjG2YAysFSwDRuY/3SPr+aLhDFhOkSIB0MlGU+9VGuk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uYcB+MoNs+z5qw2ZDkW6JBzmQiO/iLK5jj6WR5ceOOV9n4FXUWcZfgihQzVwpieuepkhADngWMdQNa5Zp861cp+AhpUpvBoZkAhtnaKv1zc98EPSNpqB4FhB7LE6WnWv4wgUsgnDNMj7o5RWUQPnNkq/SrdFOdDbFLdVILnz0VE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EQl/B27c; arc=none smtp.client-ip=198.175.65.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EQl/B27c" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770142668; x=1801678668; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VjG2YAysFSwDRuY/3SPr+aLhDFhOkSIB0MlGU+9VGuk=; b=EQl/B27cNx57edW79EPEEjTGwRqqJWS0XHRaWOeR9YeuWVqzefKZcpCy EwjAHKkx9fbXzUcL2pnE0bLbv3h8YIRGIAynwVviS06E/Fh3vemYqNOVE IXEggR8TGPbZyuMynrdTha5lO2KHG9ir3iCLU+t7DNxsklRqGBzhZZSB4 wTIKhFW7/Ug00+TSW6VVXX833ztOsqV+xIcv7YdD4o0+oH7K+JougyNZh wxGiTa/zckADmhtwh/CXmPOi5YreJKv/FzcXOd+NNdewRgUdn0Ejoq8sW s0oy4zft5aKfypNG9TOnf+uk3MmpIa1KXznvFWtJmEIa4YNbRghiR2Oel g==; X-CSE-ConnectionGUID: 2DyFIYnqTAKOvVUl3JFsoA== X-CSE-MsgGUID: ZiZZb6CIQ7iZFQCdfJBsDw== X-IronPort-AV: E=McAfee;i="6800,10657,11691"; a="88745833" X-IronPort-AV: E=Sophos;i="6.21,271,1763452800"; d="scan'208";a="88745833" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2026 10:17:44 -0800 X-CSE-ConnectionGUID: 5NCJ0TZTS2uP92aNJwa1OQ== X-CSE-MsgGUID: ioY4IeAvR42f3y2+Vc8hrw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,271,1763452800"; d="scan'208";a="209605510" Received: from khuang2-desk.gar.corp.intel.com (HELO localhost) ([10.124.221.188]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2026 10:17:44 -0800 From: isaku.yamahata@intel.com To: kvm@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Paolo Bonzini , Sean Christopherson , linux-kernel@vger.kernel.org Subject: [PATCH 19/32] KVM: VMX: Advertise tertiary controls to the user space Date: Tue, 3 Feb 2026 10:17:02 -0800 Message-ID: <2e7175eeceb0c38bad5322e20db4acc6ab38cc83.1770116051.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Isaku Yamahata Make KVM_GET_MSR_INDEX_LIST, KVM_GET_MSR_FEATURE_INDEX_LIST, KVM_GET_MSRS to advertise MSR_IA32_VMX_PROCBASED_CTLS3 to the user space VMM like QEMU. Signed-off-by: Isaku Yamahata --- arch/x86/kvm/vmx/vmx.c | 3 +++ arch/x86/kvm/x86.c | 1 + 2 files changed, 4 insertions(+) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 41c94f5194f6..50d4390d41f0 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7146,6 +7146,9 @@ bool vmx_has_emulated_msr(struct kvm *kvm, u32 index) */ return enable_unrestricted_guest || emulate_invalid_guest_state; case KVM_FIRST_EMULATED_VMX_MSR ... KVM_LAST_EMULATED_VMX_MSR: + if (index =3D=3D MSR_IA32_VMX_PROCBASED_CTLS3 && + !__nested_cpu_supports_tertiary_ctls(&vmcs_config.nested)) + return false; return nested; case MSR_AMD64_VIRT_SPEC_CTRL: case MSR_AMD64_TSC_RATIO: diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2a72709aeb03..beeee88e3878 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -446,6 +446,7 @@ static const u32 emulated_msrs_all[] =3D { MSR_IA32_VMX_PROCBASED_CTLS2, MSR_IA32_VMX_EPT_VPID_CAP, MSR_IA32_VMX_VMFUNC, + MSR_IA32_VMX_PROCBASED_CTLS3, =20 MSR_K7_HWCR, MSR_KVM_POLL_CONTROL, --=20 2.45.2