[coreboot-gerrit] Change in coreboot[master]: Revert "soc/amd/acpi: Move ACPI IVRS generation to coreboot"

[Furquan Shaikh (Code Review)]

Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/44897 )

Change subject: Revert "soc/amd/acpi: Move ACPI IVRS generation to coreboot"
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Patch Set 1:
> Patch Set 1:
>
> I wonder if that commit just unmasked another issue.
> When testing on Mandolin the IVRS table out of the HOB written by AGESA/FSP was so broken that the kernel (the version that is used in the live boot media of kubuntu 18.04 LTS; haven't checked which) just disabled the IOMMU altogether. The IVRS table generated by coreboot fixed at least that issue, so reverting it would cause a regression there.

This is causing complete instability on zork devices. Have you verified the coreboot IVRS table on zork with IOMMU turned on?