From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) (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 D4C3A2DAFD7; Wed, 28 Jan 2026 05:58:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769579929; cv=none; b=ZOJ+DOKBOAEZkA3qz5QEB0YEoJtipq267d4RAlzic9z7XRZ7LUMCvqPkSY6jPhgil8VHB8Gara5xhEcL0CXqv/yYe013ruDfUuRpf3muhPt4Bm3DXFm6jdjdqF33VxAJbfJckuXXaoA9RCk7jYlfg5hVf+U7LdGNLDjs3UlUAoY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769579929; c=relaxed/simple; bh=zBb4U0tNNmA+z5EumiDAuX1Xnb3QN8zl4hX05VllGpk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=mzOW1wSy9JK8q6/bNt6ao93PE0FHEEtuTnSJwb/2Vd9BP9y3tHwyZ2HZpR3+mKslcrK+NuGTVSZifEGaPFbtmEjCJUbSQlfbrtgplWx5QqGbjH6lWvJz1hADj1Lyuw0da/9I7/+V95MQHM1c31V9rRHxGVBtUJRfjKKg9zOnMY0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=EZjnP0Vq; arc=none smtp.client-ip=198.175.65.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="EZjnP0Vq" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1769579928; x=1801115928; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=zBb4U0tNNmA+z5EumiDAuX1Xnb3QN8zl4hX05VllGpk=; b=EZjnP0Vq2Ph0SjJdbAt7sckfiF6tfLvD2ljcMXmHNf7wugyjx6LAb891 GQ/q2ALtTCO3y/v59WiYr1v2/wJtmzG6tyvW+XwrGDQf/6rqVrAtkYL/N zw5tSP/oBXmXwH5jPBmoeU42L2U8tXMMmVyGpd0cnjQHd7P8juvwdjaGq b0gcrQWxX+7NNCX10/hCWRNo4D9xaJ1Vp9BRfgpZmMfFSGhK7xMH2Os8R iO6ywN17CX4Ab2dFs+EHTJuPiAgpma2Qn6YvkQlPiPCn8CGekh3sgtB1c +uI6Q+PrdB2Y2JpotUKdatF+KnwgqaAu4SHlzEoLINWU8rptCDYzU+3l/ Q==; X-CSE-ConnectionGUID: 8IbM5IWVTrK5oyujrqm+uA== X-CSE-MsgGUID: YvcwSGh9RlCD+icRjNagyQ== X-IronPort-AV: E=McAfee;i="6800,10657,11684"; a="81894641" X-IronPort-AV: E=Sophos;i="6.21,258,1763452800"; d="scan'208";a="81894641" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2026 21:58:47 -0800 X-CSE-ConnectionGUID: 28klSJNHQCWazPMmd1Abdw== X-CSE-MsgGUID: VcMR7A9YQ+a5WXjVWnSBVg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,258,1763452800"; d="scan'208";a="212276513" Received: from unknown (HELO [10.238.1.231]) ([10.238.1.231]) by ORVIESA003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2026 21:58:40 -0800 Message-ID: <988f0c43-3335-4673-b0a3-ef587a1f904d@linux.intel.com> Date: Wed, 28 Jan 2026 13:58:37 +0800 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 06/26] x86/virt/tdx: Prepare to support P-SEAMLDR SEAMCALLs To: Chao Gao Cc: linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org, reinette.chatre@intel.com, ira.weiny@intel.com, kai.huang@intel.com, dan.j.williams@intel.com, yilun.xu@linux.intel.com, sagis@google.com, vannapurve@google.com, paulmck@kernel.org, nik.borisov@suse.com, zhenzhong.duan@intel.com, seanjc@google.com, rick.p.edgecombe@intel.com, kas@kernel.org, dave.hansen@linux.intel.com, vishal.l.verma@intel.com, Farrah Chen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" References: <20260123145645.90444-1-chao.gao@intel.com> <20260123145645.90444-7-chao.gao@intel.com> Content-Language: en-US From: Binbin Wu In-Reply-To: <20260123145645.90444-7-chao.gao@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 1/23/2026 10:55 PM, Chao Gao wrote: > P-SEAMLDR is another component alongside the TDX module within the > protected SEAM range. P-SEAMLDR can update the TDX module at runtime. > Software can talk with P-SEAMLDR via SEAMCALLs with the bit 63 of RAX > (leaf number) set to 1 (a.k.a P-SEAMLDR SEAMCALLs). > > P-SEAMLDR SEAMCALLs differ from SEAMCALLs of the TDX module in terms of > error codes and the handling of the current VMCS. > > In preparation for adding support for P-SEAMLDR SEAMCALLs, do the two > following changes to SEAMCALL low-level helpers: > > 1) Tweak sc_retry() to retry on "lack of entropy" errors reported by > P-SEAMLDR because it uses a different error code. > > 2) Add seamldr_err() to log error messages on P-SEAMLDR SEAMCALL failures. > > Signed-off-by: Chao Gao > Tested-by: Farrah Chen Reviewed-by: Binbin Wu