From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (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 8D849222575 for ; Mon, 26 Jan 2026 11:15:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769426159; cv=none; b=HGaClg8TjwgZv5Wnq1W1cWCuu/UtnsS7rRi9OImTwUmlcRtbcfiUi5Cs2sE0DPioP+M4VegeW77NY2MF0kNDyp5tsR+jOv+PKQEzIZlDb4r+kqRT7fRIx7nW0HZezy/ASBINTbBE1YyZ59d+383KGpbirqCoNSbz82Vk0dFX9tM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769426159; c=relaxed/simple; bh=w+vROFuzEgBwPcRTQuuQ9o5RwPtsD43ByelrWXs4jUA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=L3AsYiMA8llFdnT0VRVVWoc4CF0/tg/ExgmXjtjnibE+ihwt3B7jP7oJlbhV9o4wLvsKla0mZY8cf2xPrg5/zrYNA5s9FiKKL/EC39EL41X5O+11d6MJYRJST4nJRsTx+7D84+7oB3oi8f2nnyNVx+4Ri8N1TP2HH/HLM5ROtC0= 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=FhFvW4rV; arc=none smtp.client-ip=198.175.65.17 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="FhFvW4rV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1769426159; x=1800962159; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=w+vROFuzEgBwPcRTQuuQ9o5RwPtsD43ByelrWXs4jUA=; b=FhFvW4rVS2PMwMJn3luZt5wj/HdRBRW6JQlVO/gI27l4E2wIVu7Ku/Ad vnto9nLhv1loLnXIuJjTWQl6ow9nmz7KHOA2vwmPnd+ADUGrEAeswqUGJ bOHyi+CWXVh25xVR3LRMRmNWhfw3vf2DKcv+3P6Oa6PkOfxMoJ7rDW7Q5 RTlRJCwyq+QGwtd3sJNzwDJcpk60wOLfwB+vl7ZJwBcSHu6shbWQ/K1+I Af80/crd1ri0eAU41KNwGla3VLRtEV/G0Z+6T3bYeXTdrwuzvAbw5GYrT TThVKGSP0Zzhg074BC7RY6whKBc/VyzRtwr3yfbX+PI5UZW6woeVPWmNx g==; X-CSE-ConnectionGUID: V2LbrwdXQ56nvUJ2I/LlCg== X-CSE-MsgGUID: dGimdSCOTve2i0Z3JXtazg== X-IronPort-AV: E=McAfee;i="6800,10657,11682"; a="70568814" X-IronPort-AV: E=Sophos;i="6.21,255,1763452800"; d="scan'208";a="70568814" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2026 03:15:58 -0800 X-CSE-ConnectionGUID: Nr8rf39ARrKORhiYcZFC0w== X-CSE-MsgGUID: hgPfC5RxSeKczPthrdiEBA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,255,1763452800"; d="scan'208";a="207542029" Received: from krybak-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.246.55]) by fmviesa006-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2026 03:15:50 -0800 Date: Mon, 26 Jan 2026 13:15:47 +0200 From: Tony Lindgren 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, Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" Subject: Re: [PATCH v3 24/26] x86/virt/seamldr: Extend sigstruct to 16KB Message-ID: References: <20260123145645.90444-1-chao.gao@intel.com> <20260123145645.90444-25-chao.gao@intel.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260123145645.90444-25-chao.gao@intel.com> On Fri, Jan 23, 2026 at 06:55:32AM -0800, Chao Gao wrote: > Currently, each TDX Module has a 4KB sigstruct that is passed to the > P-SEAMLDR during module updates to authenticate the TDX Module binary. > > Future TDX Module versions will pack additional information into the > sigstruct, which will exceed the current 4KB size limit. > > To accommodate this, the sigstruct is being extended to support up to > 16KB. Update seamldr_params and tdx-blob structures to handle the larger > sigstruct size. Reviewed-by: Tony Lindgren