Re: [PATCH] efistub/tpm: Use ACPI reclaim memory for event log to avoid corruption

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On Wed, Oct 30, 2024 at 05:13:14PM +0000, Usama Arif wrote:
> 
> 
> On 30/10/2024 05:25, Jiri Slaby wrote:
> > On 25. 10. 24, 15:27, Usama Arif wrote:
> >> Could you share the e820 map, reserve setup_data and TPMEventLog address with and without the patch?
> >> All of these should be just be in the dmesg.
> > efi: EFI v2.6 by American Megatrends

Tossing in another observation - the AMI EFI we've been working with has been

EFI v2.8 by American Megatrends
or 
EFI v2.9 by American Megatrends

We have not seen this particular behavior (cold boot corruption issues) on top
of these version.  Might be worth investigating this issue.

you may also want to investigate this patch set:

https://lore.kernel.org/all/20240913231954.20081-1-gourry@xxxxxxxxxx/

which I believe would have caught your "eat all memory" sign extention issue.

This is queued up for v6.13 i think - but possibly 1/4 deserves a stable mark.

~Gregory




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