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Add a lock to protect the critical region in Service APIs for UEFI Runtime Variable Service to prevent re-entrance of the variable service API from from different allowable TPL level. In UEFI 2.x and EFI 1.10 spec, EFI_TPL_CALLBACK is the allowable TPL level for Variable services.

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2444 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qwang12
2007-03-12 07:56:16 +00:00
parent c094abe585
commit 6ed71dcc32
12 changed files with 275 additions and 125 deletions
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16
EdkModulePkg/Universal/EmuVariable/RuntimeDxe/Ipf/InitVariable.c
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@@ -60,7 +60,7 @@ Returns:
(UINT32 *) Arg4,
(UINTN *) Arg5,
(VOID *) Arg6,
&Global->VariableBase[VirtualMode],
&Global->VariableGlobal[VirtualMode],
Global->FvbInstance
);
return ReturnVal;
@@ -70,7 +70,7 @@ Returns:
(UINTN *) Arg2,
(CHAR16 *) Arg3,
(EFI_GUID *) Arg4,
&Global->VariableBase[VirtualMode],
&Global->VariableGlobal[VirtualMode],
Global->FvbInstance
);
return ReturnVal;
@@ -82,7 +82,7 @@ Returns:
(UINT32) Arg4,
(UINTN) Arg5,
(VOID *) Arg6,
&Global->VariableBase[VirtualMode],
&Global->VariableGlobal[VirtualMode],
(UINTN *) &Global->VolatileLastVariableOffset,
(UINTN *) &Global->NonVolatileLastVariableOffset,
Global->FvbInstance
@@ -96,7 +96,7 @@ Returns:
(UINT64 *) Arg3,
(UINT64 *) Arg4,
(UINT64 *) Arg5,
&Global->VariableBase[VirtualMode],
&Global->VariableGlobal[VirtualMode],
Global->FvbInstance
);
return ReturnVal;
@@ -125,18 +125,18 @@ Returns:
--*/
{
CopyMem (
&mVariableModuleGlobal->VariableBase[Virtual],
&mVariableModuleGlobal->VariableBase[Physical],
&mVariableModuleGlobal->VariableGlobal[Virtual],
&mVariableModuleGlobal->VariableGlobal[Physical],
sizeof (VARIABLE_GLOBAL)
);
EfiConvertPointer (
0x0,
(VOID **) &mVariableModuleGlobal->VariableBase[Virtual].NonVolatileVariableBase
(VOID **) &mVariableModuleGlobal->VariableGlobal[Virtual].NonVolatileVariableBase
);
EfiConvertPointer (
0x0,
(VOID **) &mVariableModuleGlobal->VariableBase[Virtual].VolatileVariableBase
(VOID **) &mVariableModuleGlobal->VariableGlobal[Virtual].VolatileVariableBase
);
EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);
}