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From: Dan Williams <dan.j.williams@intel.com>
To: Kai Huang <kai.huang@intel.com>, <dave.hansen@intel.com>,
	<kirill.shutemov@linux.intel.com>, <tglx@linutronix.de>,
	<bp@alien8.de>, <peterz@infradead.org>, <mingo@redhat.com>,
	<hpa@zytor.com>, <dan.j.williams@intel.com>, <seanjc@google.com>,
	<pbonzini@redhat.com>
Cc: <x86@kernel.org>, <linux-kernel@vger.kernel.org>,
	<kvm@vger.kernel.org>, <rick.p.edgecombe@intel.com>,
	<isaku.yamahata@intel.com>, <adrian.hunter@intel.com>,
	<nik.borisov@suse.com>, <kai.huang@intel.com>
Subject: Re: [PATCH v6 10/10] x86/virt/tdx: Print TDX module version
Date: Mon, 28 Oct 2024 15:36:04 -0700	[thread overview]
Message-ID: <672011d43958d_bc69d29422@dwillia2-xfh.jf.intel.com.notmuch> (raw)
In-Reply-To: <57eaa1b17429315f8b5207774307f3c1dd40cf37.1730118186.git.kai.huang@intel.com>

Kai Huang wrote:
> Currently the kernel doesn't print any TDX module version information.
> In practice such information is useful, especially to the developers.
> 
> For instance:
> 
> 1) When something goes wrong around using TDX, the module version is
>    normally the first information the users want to know [1].
> 
> 2) The users want to quickly know module version to see whether the
>    loaded module is the expected one.
> 
> Dump TDX module version.  The actual dmesg will look like:
> 
>   virt/tdx: module version: 1.5.00.00.0481 (build_date 20230323).
> 
> And dump right after reading global metadata, so that this information is
> printed no matter whether module initialization fails or not.
> 
> Link: https://lore.kernel.org/lkml/4b3adb59-50ea-419e-ad02-e19e8ca20dee@intel.com/ [1]
> Signed-off-by: Kai Huang <kai.huang@intel.com>

LGTM, would be nice if the build hash was also included to precisely
identify the image, but will need to ask for that metadata to be added.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>

  reply	other threads:[~2024-10-28 22:36 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-28 12:41 [PATCH v6 00/10] TDX host: metadata reading tweaks, bug fix and info dump Kai Huang
2024-10-28 12:41 ` [PATCH v6 01/10] x86/virt/tdx: Rename 'struct tdx_tdmr_sysinfo' to reflect the spec better Kai Huang
2024-10-28 12:41 ` [PATCH v6 02/10] x86/virt/tdx: Start to track all global metadata in one structure Kai Huang
2024-10-28 21:37   ` Dan Williams
2024-10-28 12:41 ` [PATCH v6 03/10] x86/virt/tdx: Use auto-generated code to read global metadata Kai Huang
2024-10-28 21:46   ` Dan Williams
2024-10-28 22:47     ` Huang, Kai
2024-10-28 12:41 ` [PATCH v6 04/10] x86/virt/tdx: Use dedicated struct members for PAMT entry sizes Kai Huang
2024-10-28 13:29   ` Nikolay Borisov
2024-10-28 21:51   ` Dan Williams
2024-10-28 12:41 ` [PATCH v6 05/10] x86/virt/tdx: Add missing header file inclusion to local tdx.h Kai Huang
2024-10-28 13:35   ` Nikolay Borisov
2024-10-28 21:55   ` Dan Williams
2024-10-28 12:41 ` [PATCH v6 06/10] x86/virt/tdx: Switch to use auto-generated global metadata reading code Kai Huang
2024-10-28 14:55   ` Nikolay Borisov
2024-10-28 22:08   ` Dan Williams
2024-10-28 12:41 ` [PATCH v6 07/10] x86/virt/tdx: Trim away tail null CMRs Kai Huang
2024-10-28 22:12   ` Dan Williams
2024-10-28 12:41 ` [PATCH v6 08/10] x86/virt/tdx: Reduce TDMR's reserved areas by using CMRs to find memory holes Kai Huang
2024-10-28 22:26   ` Dan Williams
2024-10-28 23:22     ` Huang, Kai
2024-10-28 12:41 ` [PATCH v6 09/10] x86/virt/tdx: Require the module to assert it has the NO_RBP_MOD mitigation Kai Huang
2024-10-28 12:41 ` [PATCH v6 10/10] x86/virt/tdx: Print TDX module version Kai Huang
2024-10-28 22:36   ` Dan Williams [this message]
2024-10-28 22:59     ` Huang, Kai
2024-10-28 17:59 ` [PATCH v6 00/10] TDX host: metadata reading tweaks, bug fix and info dump Paolo Bonzini
2024-10-28 21:50   ` Huang, Kai
2024-10-28 18:35 ` Paolo Bonzini
2024-10-28 21:39   ` Huang, Kai
2024-10-29  0:23     ` Huang, Kai
2024-10-30 14:48       ` Paolo Bonzini
2024-10-30 20:40         ` Huang, Kai
2024-10-31 10:44 ` [PATCH 9/8] x86/virt/tdx: Add the global metadata code generation script Kai Huang
2024-11-06 11:00 ` [PATCH v6 00/10] TDX host: metadata reading tweaks, bug fix and info dump Huang, Kai

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