From nobody Sun Sep 7 12:25:10 2025 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 D6CB2CDB465 for ; Mon, 16 Oct 2023 16:17:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234019AbjJPQRO (ORCPT ); Mon, 16 Oct 2023 12:17:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233855AbjJPQRC (ORCPT ); Mon, 16 Oct 2023 12:17:02 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA48D115; Mon, 16 Oct 2023 09:16:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697473012; x=1729009012; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4SCW6Dkj/Vj+qX6sWycKS9/fk9MJ8AKVtZUkBL10lrs=; b=CIw7q5Rh6u0MQ9gB0IFhK2UZwP1R1RiG260gw7Nh4p//ErWML9HcI3Cc +bdx/nH+NDa6jpNKaaQ0IGoOBBbB/kiIKbqNoi4V1T0t0v+Uw0ODN0+cZ ZKcirKYXV+qv4dapZsQjLCLAaVJpZpM0+AqTjNmVSBRFldNTdXq36AlLj gDOzyrJUzcC/G1gZ5i6XyI55UR1sXA0EKCVY322VKvZrFLiIPK5rhVlbQ sTGmWb63rmZwoNE/SPjMpROxDSgMxip3b/2eeihZ9bJBPCrhQm6BKQO1h qvgoNOwh2dz5A4y+hIRmv+jZFnKT+Rst2O0gez7vCBmxjTLTO7RkV7vGt Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10865"; a="364921779" X-IronPort-AV: E=Sophos;i="6.03,229,1694761200"; d="scan'208";a="364921779" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2023 09:15:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10865"; a="846448122" X-IronPort-AV: E=Sophos;i="6.03,229,1694761200"; d="scan'208";a="846448122" Received: from ls.sc.intel.com (HELO localhost) ([172.25.112.31]) by fmsmga003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2023 09:15:43 -0700 From: isaku.yamahata@intel.com To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Paolo Bonzini , erdemaktas@google.com, Sean Christopherson , Sagi Shahar , David Matlack , Kai Huang , Zhi Wang , chen.bo@intel.com, hang.yuan@intel.com, tina.zhang@intel.com, Yan Zhao , Yuan Yao Subject: [PATCH v16 048/116] KVM: x86/mmu: TDX: Do not enable page track for TD guest Date: Mon, 16 Oct 2023 09:14:00 -0700 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Yan Zhao TDX does not support write protection and hence page track. Though !tdp_enabled and kvm_shadow_root_allocated(kvm) are always false for TD guest, should also return false when external write tracking is enabled. Cc: Yuan Yao Signed-off-by: Yan Zhao --- arch/x86/kvm/mmu/page_track.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/mmu/page_track.c b/arch/x86/kvm/mmu/page_track.c index c87da11f3a04..ce698ab213c1 100644 --- a/arch/x86/kvm/mmu/page_track.c +++ b/arch/x86/kvm/mmu/page_track.c @@ -22,6 +22,9 @@ =20 bool kvm_page_track_write_tracking_enabled(struct kvm *kvm) { + if (kvm->arch.vm_type =3D=3D KVM_X86_TDX_VM) + return false; + return IS_ENABLED(CONFIG_KVM_EXTERNAL_WRITE_TRACKING) || !tdp_enabled || kvm_shadow_root_allocated(kvm); } --=20 2.25.1