From: Dave Hansen <dave.hansen@intel.com>
To: Chao Gao <chao.gao@intel.com>,
kvm@vger.kernel.org, linux-coco@lists.linux.dev,
linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev
Cc: binbin.wu@linux.intel.com, dave.hansen@linux.intel.com,
djbw@kernel.org, ira.weiny@intel.com, kai.huang@intel.com,
kas@kernel.org, nik.borisov@suse.com, paulmck@kernel.org,
pbonzini@redhat.com, reinette.chatre@intel.com,
rick.p.edgecombe@intel.com, sagis@google.com, seanjc@google.com,
tony.lindgren@linux.intel.com, vannapurve@google.com,
vishal.l.verma@intel.com, yilun.xu@linux.intel.com,
xiaoyao.li@intel.com, yan.y.zhao@intel.com,
Thomas Gleixner <tglx@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Borislav Petkov <bp@alien8.de>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Clark Williams <clrkwllms@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: [PATCH v9 06/23] x86/virt/seamldr: Introduce a wrapper for P-SEAMLDR SEAMCALLs
Date: Fri, 15 May 2026 10:02:53 -0700 [thread overview]
Message-ID: <1715ba67-2e51-4deb-aa2c-58952914adc9@intel.com> (raw)
In-Reply-To: <20260513151045.1420990-7-chao.gao@intel.com>
On 5/13/26 08:09, Chao Gao wrote:
> Note that unlike P-SEAMLDR, there is also a non-persistent SEAM loader
> ("NP-SEAMLDR"). This is an authenticated code module (ACM) that is not
> callable at runtime. Only BIOS launches it to load P-SEAMLDR at boot;
> the kernel does not need to interact with it for runtime update.
The "unlike" is the wrong word to use here.
Here's a rewrite, with some Claude help:
Note: Despite the similar name, the NP-SEAMLDR ("Non-Persistent")
differs sharply from the P-SEAMLDR. It is an authenticated code module
(ACM) invoked exclusively by the BIOS at boot rather than a component
running in SEAM mode. The kernel cannot call it at runtime. It exposes
no SEAMCALL interface.
next prev parent reply other threads:[~2026-05-15 17:02 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-13 15:09 [PATCH v9 00/23] Runtime TDX module update support Chao Gao
2026-05-13 15:09 ` [PATCH v9 01/23] x86/virt/tdx: Consolidate TDX global initialization states Chao Gao
2026-05-15 16:14 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 02/23] x86/virt/tdx: Move TDX_FEATURES0 bits to asm/tdx.h Chao Gao
2026-05-15 16:15 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 03/23] x86/virt/tdx: Move low level SEAMCALL helpers out of <asm/tdx.h> Chao Gao
2026-05-13 15:09 ` [PATCH v9 04/23] coco/tdx-host: Introduce a "tdx_host" device Chao Gao
2026-05-15 16:21 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 05/23] coco/tdx-host: Expose TDX module version Chao Gao
2026-05-15 16:53 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 06/23] x86/virt/seamldr: Introduce a wrapper for P-SEAMLDR SEAMCALLs Chao Gao
2026-05-15 17:02 ` Dave Hansen [this message]
2026-05-15 17:07 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 07/23] x86/virt/seamldr: Add a helper to retrieve P-SEAMLDR information Chao Gao
2026-05-15 17:18 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 08/23] coco/tdx-host: Expose P-SEAMLDR information via sysfs Chao Gao
2026-05-15 17:23 ` Dave Hansen
2026-05-15 17:28 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 09/23] coco/tdx-host: Don't expose P-SEAMLDR information on CPUs with erratum Chao Gao
2026-05-15 17:26 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 10/23] coco/tdx-host: Implement firmware upload sysfs ABI for TDX module updates Chao Gao
2026-05-15 18:05 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 11/23] x86/virt/seamldr: Allocate and populate a module update request Chao Gao
2026-05-15 6:05 ` Chao Gao
2026-05-15 18:24 ` Dave Hansen
2026-05-15 18:44 ` Edgecombe, Rick P
2026-05-15 18:59 ` Dave Hansen
2026-05-15 19:43 ` Dave Hansen
2026-05-13 15:09 ` [PATCH v9 12/23] x86/virt/seamldr: Introduce skeleton for TDX module updates Chao Gao
2026-05-13 15:09 ` [PATCH v9 13/23] x86/virt/seamldr: Abort updates after a failed step Chao Gao
2026-05-13 15:09 ` [PATCH v9 14/23] x86/virt/seamldr: Shut down the current TDX module Chao Gao
2026-05-13 15:09 ` [PATCH v9 15/23] x86/virt/tdx: Reset software states during TDX module shutdown Chao Gao
2026-05-13 15:09 ` [PATCH v9 16/23] x86/virt/seamldr: Install a new TDX module Chao Gao
2026-05-13 15:10 ` [PATCH v9 17/23] x86/virt/seamldr: Do TDX per-CPU initialization after module installation Chao Gao
2026-05-13 15:10 ` [PATCH v9 18/23] x86/virt/tdx: Restore TDX module state Chao Gao
2026-05-13 15:10 ` [PATCH v9 19/23] x86/virt/tdx: Refresh TDX module version after update Chao Gao
2026-05-13 15:10 ` [PATCH v9 20/23] x86/virt/tdx: Reject updates during compatibility-sensitive operations Chao Gao
2026-05-15 6:12 ` Chao Gao
2026-05-13 15:10 ` [PATCH v9 21/23] x86/virt/tdx: Enable TDX module runtime updates Chao Gao
2026-05-13 15:10 ` [PATCH v9 22/23] coco/tdx-host: Document TDX module update compatibility criteria Chao Gao
2026-05-13 15:10 ` [PATCH v9 23/23] x86/virt/tdx: Document TDX module update Chao Gao
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