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IntelSiliconPkg IntelVTdDxe: Do not SetupVtd again

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Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Tested-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng 2017-11-23 08:55:02 +08:00
parent 2d3a626e3e
commit 7729e3c448
3 changed files with 10 additions and 5 deletions
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3
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
View File

@ -412,6 +412,9 @@ AcpiNotificationFunc (
Status = GetDmarAcpiTable (); Status = GetDmarAcpiTable ();
if (EFI_ERROR (Status)) { if (EFI_ERROR (Status)) {
if (Status == EFI_ALREADY_STARTED) {
gBS->CloseEvent (Event);
}
return; return;
} }
SetupVtd (); SetupVtd ();

1
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h
View File

@ -303,6 +303,7 @@ FindVtdIndexByPciDevice (
Get the DMAR ACPI table. Get the DMAR ACPI table.
@retval EFI_SUCCESS The DMAR ACPI table is got. @retval EFI_SUCCESS The DMAR ACPI table is got.
@retval EFI_ALREADY_STARTED The DMAR ACPI table has been got previously.
@retval EFI_NOT_FOUND The DMAR ACPI table is not found. @retval EFI_NOT_FOUND The DMAR ACPI table is not found.
**/ **/
EFI_STATUS EFI_STATUS

3
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
View File

@ -979,6 +979,7 @@ FindAcpiPtr (
Get the DMAR ACPI table. Get the DMAR ACPI table.
@retval EFI_SUCCESS The DMAR ACPI table is got. @retval EFI_SUCCESS The DMAR ACPI table is got.
@retval EFI_ALREADY_STARTED The DMAR ACPI table has been got previously.
@retval EFI_NOT_FOUND The DMAR ACPI table is not found. @retval EFI_NOT_FOUND The DMAR ACPI table is not found.
**/ **/
EFI_STATUS EFI_STATUS
@ -990,7 +991,7 @@ GetDmarAcpiTable (
EFI_STATUS Status; EFI_STATUS Status;
if (mAcpiDmarTable != NULL) { if (mAcpiDmarTable != NULL) {
return EFI_SUCCESS; return EFI_ALREADY_STARTED;
} }
AcpiTable = NULL; AcpiTable = NULL;