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IntelSiliconPkg IntelVTdDxe: Use TPL to protect list/engine operation

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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>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng
2018-01-04 10:33:42 +08:00
parent dcd39e09ff
commit 3a71670618
4 changed files with 26 additions and 31 deletions
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32
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/IntelVTdDxe.c
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@@ -12,16 +12,6 @@
**/
#include <PiDxe.h>
#include <Protocol/IoMmu.h>
#include <Protocol/PciIo.h>
#include <Library/IoLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include "DmaProtection.h"
/**
@@ -306,18 +296,22 @@ IoMmuSetAttribute (
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS DeviceAddress;
UINTN NumberOfPages;
EFI_TPL OriginalTpl;
OriginalTpl = gBS->RaiseTPL (VTD_TPL_LEVEL);
Status = GetDeviceInfoFromMapping (Mapping, &DeviceAddress, &NumberOfPages);
if (EFI_ERROR(Status)) {
return Status;
if (!EFI_ERROR(Status)) {
Status = VTdSetAttribute (
This,
DeviceHandle,
DeviceAddress,
EFI_PAGES_TO_SIZE(NumberOfPages),
IoMmuAccess
);
}
Status = VTdSetAttribute (
This,
DeviceHandle,
DeviceAddress,
EFI_PAGES_TO_SIZE(NumberOfPages),
IoMmuAccess
);
gBS->RestoreTPL (OriginalTpl);
return Status;
}