From: Binbin Wu <binbin.wu@linux.intel.com>
To: Chao Gao <chao.gao@intel.com>
Cc: linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev,
kvm@vger.kernel.org, yilun.xu@linux.intel.com,
tony.lindgren@linux.intel.com, rick.p.edgecombe@intel.com,
nik.borisov@suse.com, Thomas Gleixner <tglx@kernel.org>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
Kiryl Shutsemau <kas@kernel.org>
Subject: Re: [PATCH v4 04/10] x86/virt/tdx: Convert the tdmr metadata reader
Date: Tue, 13 Oct 2026 17:02:40 +0800 [thread overview]
Message-ID: <bd995feb-e8d9-4595-a809-753101b91e48@linux.intel.com> (raw)
In-Reply-To: <20261012094754.27702-5-chao.gao@intel.com>
On 10/12/2026 5:47 PM, Chao Gao wrote:
> Continue converting the metadata readers to the table-driven helper.
>
> The "TDMR info" metadata class has two readers: one for the fields that are
> always present, and one for the fields that exist only when the module
> supports Dynamic PAMT.
>
> Add a table for each, both pairing field IDs with the 'struct
> tdx_sys_info_tdmr' members that hold their values, and read all fields by
> walking the tables.
>
> Annotate both tables as __initconst since they are referenced only during
> init.
>
> AI was used under supervision to review the code and workshop the
> changelog.
>
> Signed-off-by: Chao Gao <chao.gao@intel.com>
> Reviewed-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
[...]
>
> @@ -122,7 +91,7 @@ static __init int get_tdx_sys_info(struct tdx_sys_info *sysinfo)
> * DPAMT but don't expose the metadata.
> */
> if (!ret && tdx_supports_dynamic_pamt(sysinfo))
> - ret = get_tdx_sys_info_tdmr_dpamt(&sysinfo->tdmr);
> + ret = read_sys_metadata_table(dpamt_mappings, &sysinfo->tdmr);
Nit:
dpamt_mappings is a bit inconsistent with others.
May be tdmr_dpampt_mappings?
>
> return ret;
> }
next prev parent reply other threads:[~2026-10-13 9:02 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-12 9:47 [PATCH v4 00/10] TDX: Stop auto-generating the global metadata code Chao Gao
2026-10-12 9:47 ` [PATCH v4 01/10] x86/virt/tdx: Add a helper to read a table of metadata fields Chao Gao
2026-10-13 7:00 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 02/10] x86/virt/tdx: Convert the version metadata reader Chao Gao
2026-10-13 8:22 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 03/10] x86/virt/tdx: Convert the features " Chao Gao
2026-10-13 8:45 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 04/10] x86/virt/tdx: Convert the tdmr " Chao Gao
2026-10-13 9:02 ` Binbin Wu [this message]
2026-10-12 9:47 ` [PATCH v4 05/10] x86/virt/tdx: Convert the td_ctrl " Chao Gao
2026-10-13 9:13 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 06/10] x86/virt/tdx: Convert the handoff " Chao Gao
2026-10-13 9:21 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 07/10] x86/virt/tdx: Convert the td_conf " Chao Gao
2026-10-13 9:57 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 08/10] x86/virt/tdx: Remove tdx_global_metadata.c Chao Gao
2026-10-13 10:18 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 09/10] x86/virt/tdx: Use early returns in get_tdx_sys_info() Chao Gao
2026-10-13 10:33 ` Binbin Wu
2026-10-12 9:47 ` [PATCH v4 10/10] x86/virt/tdx: Verify structure member sizes against metadata field IDs Chao Gao
2026-10-13 11:10 ` Binbin Wu
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