From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.9]) (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 2B7821FFC6C; Fri, 14 Mar 2025 14:18:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741961885; cv=none; b=b79Cbm6cbrTCqAYfStPUEvhtZZ6pThq9yXAk6bEiyC38pSfr0z4MLoCx0p0VYJ6T6JiY06hcT3J9bvKdb+KMOpTKPcfdnzdW7BfQt5LM0W/fAxMql/iZ//KUCqI5lU8y1t7h7SKjVZ18NQPVdWbfBkREOzizHifW6uO/5Mmz2MU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741961885; c=relaxed/simple; bh=ehI+5WGoJFvH581UmEMGS+mVsEWVHHCA1L3bFq4wMaE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=kmJQYgf45SCVte35n6PbnnARgIL0D7HcLl96Rchinu3lJPROAiB0jktaq9rCYwv8NjjFPntNW3LAVvVbBfPYhPa1lKSgNNtnYtmqZ8n9uLBOlGWxxxHRrfpjAUw0HnSyuau9IMY8I/hOeJXGfn8kjJg/3N5IQy400kSuE+N/lJ4= 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=l6ZnPTFK; arc=none smtp.client-ip=198.175.65.9 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="l6ZnPTFK" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1741961883; x=1773497883; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=ehI+5WGoJFvH581UmEMGS+mVsEWVHHCA1L3bFq4wMaE=; b=l6ZnPTFKPHGIfKdubKjoc/Kw9WKS0KW0ab8H8zHuptkQM7iecRxkTmWv hahiv0huI0RQp7ElYW5WRTvCGNbYi2u8/wrdWzKgMako0nKYa2i6WSXEi DONZV3Qd0M06eceJKCHYyMBSrS73fs3Wq9cmCsaa05kZL4fI0ocUYO2j9 N9r5FcvvJzCBcEgf+7OLI7D1XZh2FR/jenyO2zjLK7Y2dknwv+tZ1p9jA QF3WIyVRFxhrzgLX1EqzTl4lvt1D6EvUF6LfxujV6u24Zodms+3pxP5I0 irGqptNsqVpfEs0ija9RSHfmB/O1xenrCL2rK76vEkN9EO1S6NmrrDmyT w==; X-CSE-ConnectionGUID: eilAbbtaQiSE7kxHPrFbwg== X-CSE-MsgGUID: HBZ+QytOS6+99ciS/nEc6A== X-IronPort-AV: E=McAfee;i="6700,10204,11373"; a="65574409" X-IronPort-AV: E=Sophos;i="6.14,246,1736841600"; d="scan'208";a="65574409" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Mar 2025 07:18:00 -0700 X-CSE-ConnectionGUID: ZE11eKY3Qf6YHGYfEHzQ7g== X-CSE-MsgGUID: 9+i+eknqSmmAOmOP3TzZtw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,246,1736841600"; d="scan'208";a="122006741" Received: from ls.sc.intel.com (HELO localhost) ([172.25.112.54]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Mar 2025 07:18:00 -0700 Date: Thu, 13 Mar 2025 17:43:11 -0700 From: Isaku Yamahata To: Marcelo Tosatti Cc: Isaku Yamahata , kvm@vger.kernel.org, pbonzini@redhat.com, Sean Christopherson , chao.gao@intel.com, rick.p.edgecombe@intel.com, yan.y.zhao@intel.com, linux-kernel@vger.kernel.org, isaku.yamahata@gmail.com, Nikunj A Dadhania Subject: Re: [PATCH 0/2] KVM: kvm-coco-queue: Support protected TSC Message-ID: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On Tue, Mar 11, 2025 at 10:13:30PM -0300, Marcelo Tosatti wrote: > On Sat, Oct 12, 2024 at 12:55:54AM -0700, Isaku Yamahata wrote: > > This patch series is for the kvm-coco-queue branch. The change for TDX KVM is > > included at the last. The test is done by create TDX vCPU and run, get TSC > > offset via vCPU device attributes and compare it with the TDX TSC OFFSET > > metadata. Because the test requires the TDX KVM and TDX KVM kselftests, don't > > include it in this patch series. > > OK, previous results were incorrect. In fact, this patches (which apply > cleanly to current kvm-coco-queue) reduce cyclictest latency from: Thank you for evaluating it. Does your guest include [1] (or similar fix)? The patch would affect the result much. [1] https://lore.kernel.org/lkml/20250228014416.3925664-1-vannapurve@google.com/ -- Isaku Yamahata