Re: [PATCH v2 0/4] tsm: Unified Measurement Register ABI for TVMs

From: Xing, Cedric
Date: Mon Mar 17 2025 - 23:48:17 EST


On 3/17/2025 6:15 PM, Sathyanarayanan Kuppuswamy wrote:
[...]
Any comment on the missing event log support? Extending the measurements
without logging the event should break the tractability feature. Can you add
info about why it is ok to just add extension support for now?

The event log support was once proposed and discussed. Please see https://lore.kernel.org/all/20240907-tsm-rtmr-v1-0-12fc4d43d4e7@xxxxxxxxx/ for details. In short, it's difficult to define a log format that fits all applications, and luckily it doesn't have to be solved in kernel mode, so we leave it out for now.