Re: [PATCH v13 01/19] Documentation/x86: Secure Launch kernel documentation

From: ross . philipson
Date: Tue Apr 15 2025 - 16:45:52 EST


On 4/11/25 2:32 PM, 'Sean Christopherson' via trenchboot-devel wrote:
On Fri, Apr 11, 2025, ross.philipson@xxxxxxxxxx wrote:
On 4/10/25 10:50 PM, ALOK TIWARI wrote:


On 11-04-2025 02:11, Ross Philipson wrote:
+
+ - Entry from the dynamic launch jumps to the SL stub.
+ - SL stub fixes up the world on the BSP.
+ - For TXT, SL stub wakes the APs, fixes up their worlds.
+ - For TXT, APs are left halted using MONITOR/MWAIT intructions.

typo intructions -> instruction

Thanks for the review. They are two separate instructions so is this really
incorrect?

From the peanut gallery, I'd just drop the "instruction(s)" qualifier, i.e.

- For TXT, APs are left halted using MONITOR/MWAIT.

Pedantically, it's the combination of MONTIOR+MWAIT that puts the CPU into a
sleep state, not the individual instructions.

And while I'm picking nits, the documentation is also a bit misleading as the CPU
isn't halted per se. I'd go with something like:

- For TXT, APs are left in an optimized (MONITOR/MWAIT) wait state.

Good suggestion, thanks

Ross