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-rw-r--r--MdePkg/Include/IndustryStandard/Acpi66.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/MdePkg/Include/IndustryStandard/Acpi66.h b/MdePkg/Include/IndustryStandard/Acpi66.h
index b7bc8ea639..780b72cbb3 100644
--- a/MdePkg/Include/IndustryStandard/Acpi66.h
+++ b/MdePkg/Include/IndustryStandard/Acpi66.h
@@ -3425,6 +3425,11 @@ typedef struct {
#define EFI_ACPI_6_6_IO_REMAPPING_TABLE_SIGNATURE SIGNATURE_32('I', 'O', 'R', 'T')
///
+/// "IOVT" I/O Virtualization Table
+///
+#define EFI_ACPI_6_6_IO_VIRTUALIZATION_TABLE_SIGNATURE SIGNATURE_32('I', 'O', 'V', 'T')
+
+///
/// "IVRS" I/O Virtualization Reporting Structure
///
#define EFI_ACPI_6_6_IO_VIRTUALIZATION_REPORTING_STRUCTURE_SIGNATURE SIGNATURE_32('I', 'V', 'R', 'S')