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@philipanda philipanda commented Aug 28, 2024

Applied Miczyg1's patch to coreboot alder lake https://review.coreboot.org/c/coreboot/+/68450 to meteor lake. It should hopefully fix this issue Dasharo/dasharo-issues#985 but I can't test it now because of missing FSP.

Co-authored-by: Michał Żygowski <[email protected]>
Signed-off-by: Filip Gołaś <[email protected]>
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After applying the patch cbem -l says:

[ERROR]  VT-d PMR HOB not found, not enabling DMA protection

@philipanda philipanda marked this pull request as ready for review September 4, 2024 12:25
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miczyg1 commented Sep 5, 2024

The change is correct, however if the FSP does not produce the HOB, then there is not much we can do about it...

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Change looks good, actual DMA protection will work once it's fixed in FSP

@mkopec mkopec merged commit 5d8e3d2 into mtl-h-dgpu Sep 9, 2024
@mkopec mkopec deleted the mtl-h-dgpu-enable-dma-protection branch September 9, 2024 10:26
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Early DMA protection cannot be applied to NovaCustom MTL models

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