From nobody Sun Sep 7 12:25:11 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 B08A0CDB474 for ; Mon, 16 Oct 2023 16:33:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232754AbjJPQdr (ORCPT ); Mon, 16 Oct 2023 12:33:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234238AbjJPQc7 (ORCPT ); Mon, 16 Oct 2023 12:32:59 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3AC076FA9; Mon, 16 Oct 2023 09:22:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697473349; x=1729009349; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=+/vtrN2qIqpj8iGnK5I8dTPlQxj06iJOkKyNTPVE38I=; b=NrS91KvE+XrSCvu/2qwf3cSwNZ2RATKGFoC4wt626ADbx9/qwFJLvutL 8Ji25iAaog2v3wQ45MhgS5xhHj1EO5gf+rir32pv6dkr2uXQZPNTG9e2v /Sefuv9Sg3Hksass8oyrqGLVYk1+Wee1YmOOvp6eSN52eHj2OirjApJGl fXcNjitEtZsWXUVMq7ipRZE3Tm6eLTM0jcDiuS0OczCSP2Tv4fmY+7Uo6 4ZZYu3QdLidZUsvjaJgByRusf/Zausw4spNbEJXUJqJdCTwEF5O/WZriu z5uyAHnVM91FxLpyoSYlPAU/clIU9IIGE3d9ZS1aXOBwXjjYBXWUXa3KK Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10865"; a="364922123" X-IronPort-AV: E=Sophos;i="6.03,229,1694761200"; d="scan'208";a="364922123" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2023 09:16:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10865"; a="1003006466" X-IronPort-AV: E=Sophos;i="6.03,229,1694761200"; d="scan'208";a="1003006466" Received: from ls.sc.intel.com (HELO localhost) ([172.25.112.31]) by fmsmga006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Oct 2023 09:16:09 -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 Subject: [PATCH v16 104/116] KVM: TDX: Add a method to ignore dirty logging Date: Mon, 16 Oct 2023 09:14:56 -0700 Message-Id: <52f1c63c3891afb42ebe1641e72b1e5057ce24fa.1697471314.git.isaku.yamahata@intel.com> 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: Isaku Yamahata Currently TDX KVM doesn't support tracking dirty pages (yet). Implement a method to ignore it. Because the flag for kvm memory slot to enable dirty logging isn't accepted for TDX, warn on the method is called for TDX. Signed-off-by: Isaku Yamahata --- arch/x86/kvm/vmx/main.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c index 5e4091dbf1e8..06eb0896a87a 100644 --- a/arch/x86/kvm/vmx/main.c +++ b/arch/x86/kvm/vmx/main.c @@ -843,6 +843,14 @@ static u8 vt_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t = gfn, bool is_mmio) return vmx_get_mt_mask(vcpu, gfn, is_mmio); } =20 +static void vt_update_cpu_dirty_logging(struct kvm_vcpu *vcpu) +{ + if (KVM_BUG_ON(is_td_vcpu(vcpu), vcpu->kvm)) + return; + + vmx_update_cpu_dirty_logging(vcpu); +} + static int vt_mem_enc_ioctl(struct kvm *kvm, void __user *argp) { if (!is_td(kvm)) @@ -986,7 +994,7 @@ struct kvm_x86_ops vt_x86_ops __initdata =3D { .sched_in =3D vt_sched_in, =20 .cpu_dirty_log_size =3D PML_ENTITY_NUM, - .update_cpu_dirty_logging =3D vmx_update_cpu_dirty_logging, + .update_cpu_dirty_logging =3D vt_update_cpu_dirty_logging, =20 .nested_ops =3D &vmx_nested_ops, =20 --=20 2.25.1