.../Universal/Console/TerminalDxe/Terminal.c | 67 +++++++++++++++++++--- 1 file changed, 59 insertions(+), 8 deletions(-)
When TerminalDxe Start() is called multiple times, the old logic
unconditionally appended the terminal device path candidates to
*Dev (ConInDev/ConOutDev/ErrOutDev), resulting the volatile storage
is full.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
---
.../Universal/Console/TerminalDxe/Terminal.c | 67 +++++++++++++++++++---
1 file changed, 59 insertions(+), 8 deletions(-)
diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
index 5d55969..60de2d4 100644
--- a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
+++ b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
@@ -994,6 +994,49 @@ TerminalDriverBindingStop (
}
/**
+ Compare a device path data structure to that of all the nodes of a
+ second device path instance.
+
+ @param Multi A pointer to a multi-instance device path data structure.
+ @param Single A pointer to a single-instance device path data structure.
+
+ @retval TRUE If the Single is contained within Multi.
+ @retval FALSE The Single is not match within Multi.
+
+**/
+BOOLEAN
+MatchDevicePaths (
+ IN EFI_DEVICE_PATH_PROTOCOL *Multi,
+ IN EFI_DEVICE_PATH_PROTOCOL *Single
+ )
+{
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
+ UINTN Size;
+
+ DevicePath = Multi;
+ DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
+ //
+ // Search for the match of 'Single' in 'Multi'
+ //
+ while (DevicePathInst != NULL) {
+ //
+ // If the single device path is found in multiple device paths,
+ // return success
+ //
+ if (CompareMem (Single, DevicePathInst, Size) == 0) {
+ FreePool (DevicePathInst);
+ return TRUE;
+ }
+
+ FreePool (DevicePathInst);
+ DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size);
+ }
+
+ return FALSE;
+}
+
+/**
Update terminal device path in Console Device Environment Variables.
@param VariableName The Console Device Environment Variable.
@@ -1018,8 +1061,12 @@ TerminalUpdateConsoleDevVariable (
//
// Get global variable and its size according to the name given.
//
- GetEfiGlobalVariable2 (VariableName, (VOID**)&Variable, NULL);
- if (Variable == NULL) {
+ Status = GetEfiGlobalVariable2 (VariableName, (VOID**)&Variable, NULL);
+ if (Status == EFI_NOT_FOUND) {
+ Status = EFI_SUCCESS;
+ Variable = NULL;
+ }
+ if (EFI_ERROR (Status)) {
return;
}
@@ -1028,17 +1075,21 @@ TerminalUpdateConsoleDevVariable (
//
for (TerminalType = 0; TerminalType < ARRAY_SIZE (mTerminalType); TerminalType++) {
SetTerminalDevicePath (TerminalType, ParentDevicePath, &TempDevicePath);
- NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);
- ASSERT (NewVariable != NULL);
- if (Variable != NULL) {
- FreePool (Variable);
- }
if (TempDevicePath != NULL) {
+ if (!MatchDevicePaths (Variable, TempDevicePath)) {
+ NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);
+ if (NewVariable != NULL) {
+ if (Variable != NULL) {
+ FreePool (Variable);
+ }
+ Variable = NewVariable;
+ }
+ }
+
FreePool (TempDevicePath);
}
- Variable = NewVariable;
}
VariableSize = GetDevicePathSize (Variable);
--
2.9.0.windows.1
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Reviewed-by: Star Zeng <star.zeng@intel.com>
BTW: May the MatchDevicePaths could be proposed to DevicePathLib? :)
---- MatchDevicePaths Matches (5 in 1 files) ----
ConsoleOption.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUiLib):MatchDevicePaths (
ConsoleOption.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUiLib): if (MatchDevicePaths (OutDevicePath, NewDevicePath)) {
ConsoleOption.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUiLib): if (MatchDevicePaths (InpDevicePath, NewDevicePath)) {
ConsoleOption.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUiLib): if (MatchDevicePaths (ErrDevicePath, NewDevicePath)) {
ConsoleOption.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUiLib): NewConsoleContext->IsActive = MatchDevicePaths (
---- BmMatchDevicePaths Matches (4 in 4 files) ----
BmBoot.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib): if (BmMatchDevicePaths (*CachedDevicePath, DevicePath)) {
BmConsole.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib): if (!BmMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {
BmMisc.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib):BmMatchDevicePaths (
InternalBm.h (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib):BmMatchDevicePaths (
---- BdsLibMatchDevicePaths Matches (11 in 8 files) ----
BdsBoot.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Library\GenericBdsLib): if (BdsLibMatchDevicePaths (CachedDevicePath, BlockIoDevicePath)) {
BdsBoot.c (F:\GIT\edk2Git\edk2\Vlv2TbltDevicePkg\Override\IntelFrameworkModulePkg\Library\GenericBdsLib): if (BdsLibMatchDevicePaths (CachedDevicePath, BlockIoDevicePath)) {
BdsConsole.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Library\GenericBdsLib): if (!BdsLibMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {
BdsConsole.c (F:\GIT\edk2Git\edk2\Vlv2TbltDevicePkg\Override\IntelFrameworkModulePkg\Library\GenericBdsLib): if (!BdsLibMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {
BdsMisc.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Library\GenericBdsLib):BdsLibMatchDevicePaths (
BdsMisc.c (F:\GIT\edk2Git\edk2\Vlv2TbltDevicePkg\Override\IntelFrameworkModulePkg\Library\GenericBdsLib):BdsLibMatchDevicePaths (
ConsoleOption.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootMaint): if (BdsLibMatchDevicePaths (OutDevicePath, NewDevicePath)) {
ConsoleOption.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootMaint): if (BdsLibMatchDevicePaths (InpDevicePath, NewDevicePath)) {
ConsoleOption.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootMaint): if (BdsLibMatchDevicePaths (ErrDevicePath, NewDevicePath)) {
ConsoleOption.c (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootMaint): NewConsoleContext->IsActive = BdsLibMatchDevicePaths (
GenericBdsLib.h (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Include\Library):BdsLibMatchDevicePaths (
---- ConPlatformMatchDevicePaths Matches (4 in 2 files) ----
ConPlatform.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe):ConPlatformMatchDevicePaths (
ConPlatform.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe): Status = ConPlatformMatchDevicePaths (
ConPlatform.c (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe): Status = ConPlatformMatchDevicePaths (
ConPlatform.h (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe):ConPlatformMatchDevicePaths (
Thanks,
Star
-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Ruiyu Ni
Sent: Wednesday, April 19, 2017 10:43 AM
To: edk2-devel@lists.01.org
Cc: Zeng, Star <star.zeng@intel.com>
Subject: [edk2] [PATCH] MdeModulePkg/TerminalDxe: Avoid always append device path to *Dev
When TerminalDxe Start() is called multiple times, the old logic unconditionally appended the terminal device path candidates to *Dev (ConInDev/ConOutDev/ErrOutDev), resulting the volatile storage is full.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
---
.../Universal/Console/TerminalDxe/Terminal.c | 67 +++++++++++++++++++---
1 file changed, 59 insertions(+), 8 deletions(-)
diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
index 5d55969..60de2d4 100644
--- a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
+++ b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
@@ -994,6 +994,49 @@ TerminalDriverBindingStop ( }
/**
+ Compare a device path data structure to that of all the nodes of a
+ second device path instance.
+
+ @param Multi A pointer to a multi-instance device path data structure.
+ @param Single A pointer to a single-instance device path data structure.
+
+ @retval TRUE If the Single is contained within Multi.
+ @retval FALSE The Single is not match within Multi.
+
+**/
+BOOLEAN
+MatchDevicePaths (
+ IN EFI_DEVICE_PATH_PROTOCOL *Multi,
+ IN EFI_DEVICE_PATH_PROTOCOL *Single
+ )
+{
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
+ UINTN Size;
+
+ DevicePath = Multi;
+ DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size); //
+ // Search for the match of 'Single' in 'Multi'
+ //
+ while (DevicePathInst != NULL) {
+ //
+ // If the single device path is found in multiple device paths,
+ // return success
+ //
+ if (CompareMem (Single, DevicePathInst, Size) == 0) {
+ FreePool (DevicePathInst);
+ return TRUE;
+ }
+
+ FreePool (DevicePathInst);
+ DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size); }
+
+ return FALSE;
+}
+
+/**
Update terminal device path in Console Device Environment Variables.
@param VariableName The Console Device Environment Variable.
@@ -1018,8 +1061,12 @@ TerminalUpdateConsoleDevVariable (
//
// Get global variable and its size according to the name given.
//
- GetEfiGlobalVariable2 (VariableName, (VOID**)&Variable, NULL);
- if (Variable == NULL) {
+ Status = GetEfiGlobalVariable2 (VariableName, (VOID**)&Variable,
+ NULL); if (Status == EFI_NOT_FOUND) {
+ Status = EFI_SUCCESS;
+ Variable = NULL;
+ }
+ if (EFI_ERROR (Status)) {
return;
}
@@ -1028,17 +1075,21 @@ TerminalUpdateConsoleDevVariable (
//
for (TerminalType = 0; TerminalType < ARRAY_SIZE (mTerminalType); TerminalType++) {
SetTerminalDevicePath (TerminalType, ParentDevicePath, &TempDevicePath);
- NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);
- ASSERT (NewVariable != NULL);
- if (Variable != NULL) {
- FreePool (Variable);
- }
if (TempDevicePath != NULL) {
+ if (!MatchDevicePaths (Variable, TempDevicePath)) {
+ NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);
+ if (NewVariable != NULL) {
+ if (Variable != NULL) {
+ FreePool (Variable);
+ }
+ Variable = NewVariable;
+ }
+ }
+
FreePool (TempDevicePath);
}
- Variable = NewVariable;
}
VariableSize = GetDevicePathSize (Variable);
--
2.9.0.windows.1
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https://lists.01.org/mailman/listinfo/edk2-devel
_______________________________________________
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Good idea😊
Mike,
What's your opinion?
Thanks/Ray
> -----Original Message-----
> From: Zeng, Star
> Sent: Wednesday, April 19, 2017 10:54 AM
> To: Ni, Ruiyu <ruiyu.ni@intel.com>; edk2-devel@lists.01.org
> Cc: Zeng, Star <star.zeng@intel.com>
> Subject: RE: [edk2] [PATCH] MdeModulePkg/TerminalDxe: Avoid always
> append device path to *Dev
>
> Reviewed-by: Star Zeng <star.zeng@intel.com>
>
> BTW: May the MatchDevicePaths could be proposed to DevicePathLib? :)
>
> ---- MatchDevicePaths Matches (5 in 1 files) ---- ConsoleOption.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUi
> Lib):MatchDevicePaths (
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUi
> Lib): if (MatchDevicePaths (OutDevicePath, NewDevicePath)) {
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUi
> Lib): if (MatchDevicePaths (InpDevicePath, NewDevicePath)) {
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUi
> Lib): if (MatchDevicePaths (ErrDevicePath, NewDevicePath)) {
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\BootMaintenanceManagerUi
> Lib): NewConsoleContext->IsActive = MatchDevicePaths (
> ---- BmMatchDevicePaths Matches (4 in 4 files) ---- BmBoot.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib): if
> (BmMatchDevicePaths (*CachedDevicePath, DevicePath)) {
> BmConsole.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib): if
> (!BmMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {
> BmMisc.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib):BmMa
> tchDevicePaths ( InternalBm.h
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Library\UefiBootManagerLib):BmMa
> tchDevicePaths (
> ---- BdsLibMatchDevicePaths Matches (11 in 8 files) ----
> BdsBoot.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Library\GenericBdsLib):
> if (BdsLibMatchDevicePaths (CachedDevicePath, BlockIoDevicePath)) {
> BdsBoot.c
> (F:\GIT\edk2Git\edk2\Vlv2TbltDevicePkg\Override\IntelFrameworkModule
> Pkg\Library\GenericBdsLib): if (BdsLibMatchDevicePaths
> (CachedDevicePath, BlockIoDevicePath)) {
> BdsConsole.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Library\GenericBdsLib):
> if (!BdsLibMatchDevicePaths (NewDevicePath, CustomizedConDevicePath)) {
> BdsConsole.c
> (F:\GIT\edk2Git\edk2\Vlv2TbltDevicePkg\Override\IntelFrameworkModule
> Pkg\Library\GenericBdsLib): if (!BdsLibMatchDevicePaths (NewDevicePath,
> CustomizedConDevicePath)) {
> BdsMisc.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Library\GenericBdsLib):B
> dsLibMatchDevicePaths ( BdsMisc.c
> (F:\GIT\edk2Git\edk2\Vlv2TbltDevicePkg\Override\IntelFrameworkModule
> Pkg\Library\GenericBdsLib):BdsLibMatchDevicePaths (
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootM
> aint): if (BdsLibMatchDevicePaths (OutDevicePath, NewDevicePath)) {
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootM
> aint): if (BdsLibMatchDevicePaths (InpDevicePath, NewDevicePath)) {
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootM
> aint): if (BdsLibMatchDevicePaths (ErrDevicePath, NewDevicePath)) {
> ConsoleOption.c
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Universal\BdsDxe\BootM
> aint): NewConsoleContext->IsActive = BdsLibMatchDevicePaths (
> GenericBdsLib.h
> (F:\GIT\edk2Git\edk2\IntelFrameworkModulePkg\Include\Library):BdsLibM
> atchDevicePaths (
> ---- ConPlatformMatchDevicePaths Matches (4 in 2 files) ---- ConPlatform.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe)
> :ConPlatformMatchDevicePaths (
> ConPlatform.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe):
> Status = ConPlatformMatchDevicePaths (
> ConPlatform.c
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe):
> Status = ConPlatformMatchDevicePaths (
> ConPlatform.h
> (F:\GIT\edk2Git\edk2\MdeModulePkg\Universal\Console\ConPlatformDxe)
> :ConPlatformMatchDevicePaths (
>
>
> Thanks,
> Star
> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of
> Ruiyu Ni
> Sent: Wednesday, April 19, 2017 10:43 AM
> To: edk2-devel@lists.01.org
> Cc: Zeng, Star <star.zeng@intel.com>
> Subject: [edk2] [PATCH] MdeModulePkg/TerminalDxe: Avoid always append
> device path to *Dev
>
> When TerminalDxe Start() is called multiple times, the old logic
> unconditionally appended the terminal device path candidates to *Dev
> (ConInDev/ConOutDev/ErrOutDev), resulting the volatile storage is full.
>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
> Cc: Star Zeng <star.zeng@intel.com>
> ---
> .../Universal/Console/TerminalDxe/Terminal.c | 67
> +++++++++++++++++++---
> 1 file changed, 59 insertions(+), 8 deletions(-)
>
> diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
> b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
> index 5d55969..60de2d4 100644
> --- a/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
> +++ b/MdeModulePkg/Universal/Console/TerminalDxe/Terminal.c
> @@ -994,6 +994,49 @@ TerminalDriverBindingStop ( }
>
> /**
> + Compare a device path data structure to that of all the nodes of a
> + second device path instance.
> +
> + @param Multi A pointer to a multi-instance device path data structure.
> + @param Single A pointer to a single-instance device path data
> structure.
> +
> + @retval TRUE If the Single is contained within Multi.
> + @retval FALSE The Single is not match within Multi.
> +
> +**/
> +BOOLEAN
> +MatchDevicePaths (
> + IN EFI_DEVICE_PATH_PROTOCOL *Multi,
> + IN EFI_DEVICE_PATH_PROTOCOL *Single
> + )
> +{
> + EFI_DEVICE_PATH_PROTOCOL *DevicePath;
> + EFI_DEVICE_PATH_PROTOCOL *DevicePathInst;
> + UINTN Size;
> +
> + DevicePath = Multi;
> + DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size); //
> + // Search for the match of 'Single' in 'Multi'
> + //
> + while (DevicePathInst != NULL) {
> + //
> + // If the single device path is found in multiple device paths,
> + // return success
> + //
> + if (CompareMem (Single, DevicePathInst, Size) == 0) {
> + FreePool (DevicePathInst);
> + return TRUE;
> + }
> +
> + FreePool (DevicePathInst);
> + DevicePathInst = GetNextDevicePathInstance (&DevicePath, &Size); }
> +
> + return FALSE;
> +}
> +
> +/**
> Update terminal device path in Console Device Environment Variables.
>
> @param VariableName The Console Device Environment Variable.
> @@ -1018,8 +1061,12 @@ TerminalUpdateConsoleDevVariable (
> //
> // Get global variable and its size according to the name given.
> //
> - GetEfiGlobalVariable2 (VariableName, (VOID**)&Variable, NULL);
> - if (Variable == NULL) {
> + Status = GetEfiGlobalVariable2 (VariableName, (VOID**)&Variable,
> + NULL); if (Status == EFI_NOT_FOUND) {
> + Status = EFI_SUCCESS;
> + Variable = NULL;
> + }
> + if (EFI_ERROR (Status)) {
> return;
> }
>
> @@ -1028,17 +1075,21 @@ TerminalUpdateConsoleDevVariable (
> //
> for (TerminalType = 0; TerminalType < ARRAY_SIZE (mTerminalType);
> TerminalType++) {
> SetTerminalDevicePath (TerminalType, ParentDevicePath,
> &TempDevicePath);
> - NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);
> - ASSERT (NewVariable != NULL);
> - if (Variable != NULL) {
> - FreePool (Variable);
> - }
>
> if (TempDevicePath != NULL) {
> + if (!MatchDevicePaths (Variable, TempDevicePath)) {
> + NewVariable = AppendDevicePathInstance (Variable, TempDevicePath);
> + if (NewVariable != NULL) {
> + if (Variable != NULL) {
> + FreePool (Variable);
> + }
> + Variable = NewVariable;
> + }
> + }
> +
> FreePool (TempDevicePath);
> }
>
> - Variable = NewVariable;
> }
>
> VariableSize = GetDevicePathSize (Variable);
> --
> 2.9.0.windows.1
>
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> edk2-devel mailing list
> edk2-devel@lists.01.org
> https://lists.01.org/mailman/listinfo/edk2-devel
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