[CHERRY-PICK] UefiTestingPkg: Correctly handle cached DMA audit ACPI tables - #941
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Aaron (apop5) merged 1 commit intoSep 15, 2026
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…oft#938) ## Description Correctly handle cached DMA audit ACPI tables. Fixes microsoft#937 Tests call GetDmarAcpiTable(), but the Intel VT-d and IVRS implementation caches the ACPI table and returns EFI_ALREADY_STARTED on the second call without a reboot. GetAcpiTable() will no longer return already started and will always refresh the pointer with the data. On the caller side, the caching of the global variable is handled so we don't call GetAcpiTable() redundantly. - [ ] Impacts functionality? - [ ] Impacts security? - [ ] Breaking change? - [ ] Includes tests? - [ ] Includes documentation? ## How This Was Tested Tested on Intel platform and all tests now pass. ## Integration Instructions N/A (cherry picked from commit a8b711b)
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Description
Cherry-pick a8b711b (#938) into
release/202608. Related issue: #937.Correctly handle cached DMA audit ACPI tables. Fixes #937
Tests call GetDmarAcpiTable(), but the Intel VT-d and IVRS
implementation caches the ACPI table and returns EFI_ALREADY_STARTED on
the second call without a reboot.
GetAcpiTable() will no longer return already started and will always
refresh the pointer with the data. On the caller side, the caching of
the global variable is handled so we don't call GetAcpiTable()
redundantly.
How This Was Tested
Tested on intel platform and all tests now pass.
Integration Instructions
N/A