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From: "Huang, Kai" <kai.huang@intel.com>
To: Adrian Hunter <adrian.hunter@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>, <chao.gao@intel.com>,
	<binbin.wu@linux.intel.com>
Subject: Re: [PATCH v3 1/8] x86/virt/tdx: Rename 'struct tdx_tdmr_sysinfo' to reflect the spec better
Date: Wed, 28 Aug 2024 10:20:38 +1200	[thread overview]
Message-ID: <2152e96c-eccc-4e96-b658-70cc59dfee68@intel.com> (raw)
In-Reply-To: <1b810874-2734-4ca8-933d-ebe9500a8ddc@intel.com>



On 28/08/2024 1:10 am, Adrian Hunter wrote:
> On 27/08/24 10:14, Kai Huang wrote:
> 
> "to reflect the spec better" is a bit vague.  How about:
> 
> x86/virt/tdx: Rename 'struct tdx_tdmr_sysinfo' to 'struct tdx_sys_info_tdmr'
> 
> Rename 'struct tdx_tdmr_sysinfo' to 'struct tdx_sys_info_tdmr' to
> prepare for adding similar structures that will all be prefixed by
> 'tdx_sys_info_'.
> 
>> The TDX module provides a set of "global metadata fields".  They report
> 
> Since it is a name of something, could capitalize "Global Metadata Fields"
> 
>> things like TDX module version, supported features, and fields related
>> to create/run TDX guests and so on.
>>
>> TDX organizes those metadata fields by "Class"es based on the meaning of
> 
> by "Class"es	->	into "Classes"
> 
>> those fields.  E.g., for now the kernel only reads "TD Memory Region"
>> (TDMR) related fields for module initialization.  Those fields are
>> defined under class "TDMR Info".
>>
>> There are both immediate needs to read more metadata fields for module
>> initialization and near-future needs for other kernel components like
>> KVM to run TDX guests.  To meet all those requirements, the idea is the
>> TDX host core-kernel to provide a centralized, canonical, and read-only
>> structure for the global metadata that comes out from the TDX module for
>> all kernel components to use.
>>
>> More specifically, the target is to end up with something like:
>>
>>         struct tdx_sys_info {
>> 	       struct tdx_sys_info_classA a;
>> 	       struct tdx_sys_info_classB b;
>> 	       ...
>>         };
>>
>> Currently the kernel organizes all fields under "TDMR Info" class in
>> 'struct tdx_tdmr_sysinfo'.  To prepare for the above target, rename the
>> structure to 'struct tdx_sys_info_tdmr' to follow the class name better.
>>
>> No functional change intended.
>>
>> Signed-off-by: Kai Huang <kai.huang@intel.com>
> 
> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com

Thanks for the review.

All comments above look good to me.  Will do.

  reply	other threads:[~2024-08-27 22:20 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-27  7:14 [PATCH v3 0/8] TDX host: metadata reading tweaks, bug fix and info dump Kai Huang
2024-08-27  7:14 ` [PATCH v3 1/8] x86/virt/tdx: Rename 'struct tdx_tdmr_sysinfo' to reflect the spec better Kai Huang
2024-08-27 13:10   ` Adrian Hunter
2024-08-27 22:20     ` Huang, Kai [this message]
2024-09-24 11:39       ` Huang, Kai
2024-08-30 22:05   ` Dan Williams
2024-08-27  7:14 ` [PATCH v3 2/8] x86/virt/tdx: Remove 'struct field_mapping' and implement TD_SYSINFO_MAP() macro Kai Huang
2024-08-29  7:20   ` Adrian Hunter
2024-08-30 10:52     ` Huang, Kai
2024-09-06 21:30     ` Dan Williams
2024-09-09  9:59       ` Huang, Kai
2024-09-06 20:21   ` Dan Williams
2024-09-09  9:59     ` Huang, Kai
2024-08-27  7:14 ` [PATCH v3 3/8] x86/virt/tdx: Prepare to support reading other global metadata fields Kai Huang
2024-08-30  6:43   ` Adrian Hunter
2024-08-30 11:02     ` Huang, Kai
2024-08-30  9:05   ` Nikolay Borisov
2024-08-30 11:09     ` Huang, Kai
2024-09-06 21:34   ` Dan Williams
2024-09-09 12:28     ` Huang, Kai
2024-08-27  7:14 ` [PATCH v3 4/8] x86/virt/tdx: Refine a comment to reflect the latest TDX spec Kai Huang
2024-08-30  6:45   ` Adrian Hunter
2024-08-30  9:14   ` Nikolay Borisov
2024-08-27  7:14 ` [PATCH v3 5/8] x86/virt/tdx: Start to track all global metadata in one structure Kai Huang
2024-08-30  7:02   ` Adrian Hunter
2024-08-30 11:10     ` Huang, Kai
2024-08-30 11:01   ` Nikolay Borisov
2024-08-30 11:57     ` Huang, Kai
2024-08-27  7:14 ` [PATCH v3 6/8] x86/virt/tdx: Print TDX module basic information Kai Huang
2024-09-06 22:46   ` Dan Williams
2024-09-09 10:18     ` Huang, Kai
2024-08-27  7:14 ` [PATCH v3 7/8] x86/virt/tdx: Reduce TDMR's reserved areas by using CMRs to find memory holes Kai Huang
2024-08-30 10:50   ` Adrian Hunter
2024-08-30 11:52     ` Huang, Kai
2024-08-30 12:02       ` Adrian Hunter
2024-08-30 12:27   ` Nikolay Borisov
2024-09-06 23:31   ` Dan Williams
2024-09-09 10:30     ` Huang, Kai
2024-08-27  7:14 ` [PATCH v3 8/8] x86/virt/tdx: Don't initialize module that doesn't support NO_RBP_MOD feature Kai Huang
2024-08-30 11:01   ` Adrian Hunter
2024-09-06 23:36   ` Dan Williams
2024-09-09 10:21     ` Huang, Kai

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