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From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
To: dan.j.williams@intel.com, "Kirill A . Shutemov" <kas@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>,
	Rick Edgecombe <rick.p.edgecombe@intel.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	linux-coco@lists.linux.dev
Subject: Re: [PATCH v1 1/3] virt: tsm: Document size limits for outblob attributes
Date: Wed, 11 Feb 2026 08:40:46 -0800	[thread overview]
Message-ID: <163b74e8-eede-4872-9319-047db25c0050@linux.intel.com> (raw)
In-Reply-To: <698be62f7802_8c32100e2@dwillia2-mobl4.notmuch>

Hi Dan,

On 2/10/2026 6:15 PM, dan.j.williams@intel.com wrote:
> Kuppuswamy Sathyanarayanan wrote:
>> The configfs-tsm-report interface can fail with -EFBIG when the
>> attestation report generated by a TSM provider exceeds internal
>> maximums (TSM_REPORT_OUTBLOB_MAX). However, this error condition and
>> its handling are not currently documented in the ABI.
>>
>> Userspace tools need to understand how to interpret various error
>> conditions when reading attestation reports.
>>
>> Document that reads fail with -EFBIG when reports exceed size limits,
>> with guidance on how to resolve them.
>>
>> Reviewed-by: Fang Peter <peter.fang@intel.com>
>> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
> 
> Looks good, I will change the subject to:
> 
> "configfs-tsm-report: Document size limits for outblob attributes"


Thanks for the review! Are you planning to apply this with the updated
subject line, or would you like me to send a v2 with the change?

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer


  reply	other threads:[~2026-02-11 16:40 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-11  0:17 [PATCH v1 0/3] Increase CoCo attestation report buffer size Kuppuswamy Sathyanarayanan
2026-02-11  0:17 ` [PATCH v1 1/3] virt: tsm: Document size limits for outblob attributes Kuppuswamy Sathyanarayanan
2026-02-11  2:15   ` dan.j.williams
2026-02-11 16:40     ` Kuppuswamy Sathyanarayanan [this message]
2026-02-11 20:48       ` dan.j.williams
2026-02-11  0:17 ` [PATCH v1 2/3] virt: tsm: Increase TSM_REPORT_OUTBLOB_MAX to 16MB Kuppuswamy Sathyanarayanan
2026-02-11  2:16   ` dan.j.williams
2026-02-11  0:17 ` [PATCH v1 3/3] virt: tdx-guest: Increase Quote buffer size to 128KB Kuppuswamy Sathyanarayanan
2026-02-11  2:19   ` dan.j.williams
2026-02-11 11:17   ` Kiryl Shutsemau
2026-02-11 18:40     ` Kuppuswamy Sathyanarayanan
2026-02-11 21:06       ` dan.j.williams
2026-02-11 21:13         ` Kuppuswamy Sathyanarayanan

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