From: "Sheng Wei" <w.sheng@intel.com>
To: devel@edk2.groups.io
Cc: Ray Ni <ray.ni@intel.com>,
Rangasai V Chaganty <rangasai.v.chaganty@intel.com>,
Jenny Huang <jenny.huang@intel.com>
Subject: [edk2-devel] [PATCH] IntelSiliconPkg/VTd: Reset the one-shot bits before modifing GCMD_REG
Date: Tue, 20 Feb 2024 11:36:51 +0800 [thread overview]
Message-ID: <20240220033651.1437-1-w.sheng@intel.com> (raw)
Here is the process of modify GCMD_REG.
Read GSTS_REG
Reset the one-shot bits.
Modify the target comamnd value.
Write the command value to GCMD_REG.
Wait until GSTS_REG indicates command is serviced.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
Cc: Jenny Huang <jenny.huang@intel.com>
Signed-off-by: Sheng Wei <w.sheng@intel.com>
---
.../Feature/VTd/IntelVTdCoreDxe/VtdReg.c | 13 ++----
.../VTd/IntelVTdCorePei/IntelVTdDmar.c | 9 +---
.../VTd/IntelVTdDmarPei/IntelVTdDmar.c | 43 +++++++++---------
.../Feature/VTd/IntelVTdDxe/VtdReg.c | 44 +++++++++----------
.../Feature/VTd/IntelVTdPmrPei/VtdReg.c | 1 +
.../IntelVTdPeiDxeLib/IntelVTdPeiDxeLib.c | 12 ++---
6 files changed, 51 insertions(+), 71 deletions(-)
diff --git a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCoreDxe/VtdReg.c b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCoreDxe/VtdReg.c
index edeb4b3ff..21e2d5f1b 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCoreDxe/VtdReg.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCoreDxe/VtdReg.c
@@ -112,13 +112,8 @@ PerpareCacheInvalidationInterface (
// Enable the queued invalidation interface through the Global Command Register.
// When enabled, hardware sets the QIES field in the Global Status Register.
//
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 |= B_GMCD_REG_QIE;
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface. GCMD_REG = 0x%x\n", Reg32));
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) == 0);
+ DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface.\n"));
+ VtdLibSetGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
VTdLogAddEvent (VTDLOG_DXE_QUEUED_INVALIDATION, VTD_LOG_QI_ENABLE, VtdUnitBaseAddress);
@@ -577,7 +572,7 @@ DumpVtdCapRegs (
IN VTD_CAP_REG *CapReg
)
{
- DEBUG((DEBUG_INFO, " CapReg - 0x%x\n", CapReg->Uint64));
+ DEBUG((DEBUG_INFO, " CapReg - 0x%lx\n", CapReg->Uint64));
DEBUG((DEBUG_INFO, " ND - 0x%x\n", CapReg->Bits.ND));
DEBUG((DEBUG_INFO, " AFL - 0x%x\n", CapReg->Bits.AFL));
DEBUG((DEBUG_INFO, " RWBF - 0x%x\n", CapReg->Bits.RWBF));
@@ -737,7 +732,7 @@ DumpVtdIfError (
if (HasError) {
REPORT_STATUS_CODE (EFI_ERROR_CODE, PcdGet32 (PcdErrorCodeVTdError));
DEBUG((DEBUG_INFO, "\n#### ERROR ####\n"));
- DumpVtdRegs (mVtdUnitInformation[Num].VtdUnitBaseAddress);
+ DumpVtdRegs (mVtdUnitInformation[Num].VtdUnitBaseAddress);
DEBUG((DEBUG_INFO, "#### ERROR ####\n\n"));
//
// Clear
diff --git a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCorePei/IntelVTdDmar.c b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCorePei/IntelVTdDmar.c
index 93207ba52..549313dbf 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCorePei/IntelVTdDmar.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdCorePei/IntelVTdDmar.c
@@ -120,13 +120,8 @@ PerpareCacheInvalidationInterface (
// Enable the queued invalidation interface through the Global Command Register.
// When enabled, hardware sets the QIES field in the Global Status Register.
//
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 |= B_GMCD_REG_QIE;
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface. GCMD_REG = 0x%x\n", Reg32));
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) == 0);
+ DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface.\n"));
+ VtdLibSetGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
VTdLogAddEvent (VTDLOG_PEI_QUEUED_INVALIDATION, VTD_LOG_QI_ENABLE, VtdUnitBaseAddress);
diff --git a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
index e1b867973..533fb2b9a 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
@@ -20,6 +20,18 @@
#include <Ppi/IoMmu.h>
#include "IntelVTdDmarPei.h"
+VOID
+SetGlobalCommandRegisterBits (
+ IN UINTN VtdUnitBaseAddress,
+ IN UINT32 BitMask
+ );
+
+VOID
+ClearGlobalCommandRegisterBits (
+ IN UINTN VtdUnitBaseAddress,
+ IN UINT32 BitMask
+ );
+
/**
Flush VTD page table and context table memory.
@@ -58,6 +70,7 @@ FlushWriteBuffer (
if (CapReg.Bits.RWBF != 0) {
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
+ Reg32 = (Reg32 & 0x96FFFFFF); // Reset the one-shot bits
MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32 | B_GMCD_REG_WBF);
do {
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
@@ -104,11 +117,7 @@ PerpareCacheInvalidationInterface (
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
if ((Reg32 & B_GSTS_REG_QIES) != 0) {
DEBUG ((DEBUG_INFO,"Queued Invalidation Interface was enabled.\n"));
- Reg32 &= (~B_GSTS_REG_QIES);
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) != 0);
+ ClearGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
MmioWrite64 (VtdUnitBaseAddress + R_IQA_REG, 0);
}
@@ -144,13 +153,8 @@ PerpareCacheInvalidationInterface (
// Enable the queued invalidation interface through the Global Command Register.
// When enabled, hardware sets the QIES field in the Global Status Register.
//
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 |= B_GMCD_REG_QIE;
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface. GCMD_REG = 0x%x\n", Reg32));
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) == 0);
+ DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface.\n"));
+ SetGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
return EFI_SUCCESS;
}
@@ -165,16 +169,9 @@ DisableQueuedInvalidationInterface (
IN VTD_UNIT_INFO *VTdUnitInfo
)
{
- UINT32 Reg32;
-
if (VTdUnitInfo->EnableQueuedInvalidation != 0) {
- Reg32 = MmioRead32 (VTdUnitInfo->VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 &= (~B_GMCD_REG_QIE);
- MmioWrite32 (VTdUnitInfo->VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- DEBUG ((DEBUG_INFO, "Disable Queued Invalidation Interface. GCMD_REG = 0x%x\n", Reg32));
- do {
- Reg32 = MmioRead32 (VTdUnitInfo->VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) != 0);
+ DEBUG ((DEBUG_INFO, "Disable Queued Invalidation Interface.\n"));
+ ClearGlobalCommandRegisterBits (VTdUnitInfo->VtdUnitBaseAddress, B_GMCD_REG_QIE);
if (VTdUnitInfo->QiDescBuffer != NULL) {
FreePages(VTdUnitInfo->QiDescBuffer, EFI_SIZE_TO_PAGES (VTdUnitInfo->QiDescBufferSize));
@@ -206,7 +203,7 @@ QueuedInvalidationCheckFault (
if (FaultReg & (B_FSTS_REG_IQE | B_FSTS_REG_ITE | B_FSTS_REG_ICE)) {
IqercdReg.Uint64 = MmioRead64 (VTdUnitInfo->VtdUnitBaseAddress + R_IQERCD_REG);
- DEBUG((DEBUG_ERROR, "Detect Queue Invalidation Error [0x%08x] - IQERCD [0x%016lx]\n", FaultReg, IqercdReg.Uint64));
+ DEBUG((DEBUG_ERROR, "VTD 0x%x Detect Queue Invalidation Error [0x%08x] - IQERCD [0x%016lx]\n", VTdUnitInfo->VtdUnitBaseAddress, FaultReg, IqercdReg.Uint64));
MmioWrite32 (VTdUnitInfo->VtdUnitBaseAddress + R_FSTS_REG, FaultReg);
return RETURN_DEVICE_ERROR;
@@ -763,7 +760,7 @@ EnableVTdTranslationProtection (
if (VtdUnitInfo->ExtRootEntryTable != 0) {
DEBUG ((DEBUG_INFO, "EnableVtdDmar (%d) ExtRootEntryTable 0x%x\n", Index, VtdUnitInfo->ExtRootEntryTable));
- Status = EnableDmar (VtdUnitInfo, VtdUnitInfo->ExtRootEntryTable | BIT11);
+ Status = EnableDmar (VtdUnitInfo, VtdUnitInfo->ExtRootEntryTable | BIT11);
} else {
DEBUG ((DEBUG_INFO, "EnableVtdDmar (%d) RootEntryTable 0x%x\n", Index, VtdUnitInfo->RootEntryTable));
Status = EnableDmar (VtdUnitInfo, VtdUnitInfo->RootEntryTable);
diff --git a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c
index 30dab4a64..2c48eefe9 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/VtdReg.c
@@ -12,6 +12,18 @@ VTD_UNIT_INFORMATION *mVtdUnitInformation;
BOOLEAN mVtdEnabled;
+VOID
+SetGlobalCommandRegisterBits (
+ IN UINTN VtdUnitBaseAddress,
+ IN UINT32 BitMask
+ );
+
+VOID
+ClearGlobalCommandRegisterBits (
+ IN UINTN VtdUnitBaseAddress,
+ IN UINT32 BitMask
+ );
+
/**
Flush VTD page table and context table memory.
@@ -47,6 +59,7 @@ FlushWriteBuffer (
if (mVtdUnitInformation[VtdIndex].CapReg.Bits.RWBF != 0) {
Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GSTS_REG);
+ Reg32 = (Reg32 & 0x96FFFFFF); // Reset the one-shot bits
MmioWrite32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GCMD_REG, Reg32 | B_GMCD_REG_WBF);
do {
Reg32 = MmioRead32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_GSTS_REG);
@@ -93,11 +106,7 @@ PerpareCacheInvalidationInterface (
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
if ((Reg32 & B_GSTS_REG_QIES) != 0) {
DEBUG ((DEBUG_ERROR,"Queued Invalidation Interface was enabled.\n"));
- Reg32 &= (~B_GSTS_REG_QIES);
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) != 0);
+ ClearGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
}
//
@@ -132,13 +141,8 @@ PerpareCacheInvalidationInterface (
// Enable the queued invalidation interface through the Global Command Register.
// When enabled, hardware sets the QIES field in the Global Status Register.
//
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 |= B_GMCD_REG_QIE;
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface. GCMD_REG = 0x%x\n", Reg32));
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) == 0);
+ DEBUG ((DEBUG_INFO, "Enable Queued Invalidation Interface.\n"));
+ SetGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
return EFI_SUCCESS;
}
@@ -153,19 +157,13 @@ DisableQueuedInvalidationInterface (
IN UINTN VtdIndex
)
{
- UINT32 Reg32;
VTD_UNIT_INFORMATION *VTdUnitInfo;
VTdUnitInfo = &mVtdUnitInformation[VtdIndex];
if (VTdUnitInfo->EnableQueuedInvalidation != 0) {
- Reg32 = MmioRead32 (VTdUnitInfo->VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 &= (~B_GMCD_REG_QIE);
- MmioWrite32 (VTdUnitInfo->VtdUnitBaseAddress + R_GCMD_REG, Reg32);
- DEBUG ((DEBUG_INFO, "Disable Queued Invalidation Interface. GCMD_REG = 0x%x\n", Reg32));
- do {
- Reg32 = MmioRead32 (VTdUnitInfo->VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) != 0);
+ DEBUG ((DEBUG_INFO, "Disable Queued Invalidation Interface.\n"));
+ ClearGlobalCommandRegisterBits (VTdUnitInfo->VtdUnitBaseAddress, B_GMCD_REG_QIE);
if (VTdUnitInfo->QiDescBuffer != NULL) {
FreePages(VTdUnitInfo->QiDescBuffer, EFI_SIZE_TO_PAGES (VTdUnitInfo->QiDescBufferSize));
@@ -198,7 +196,7 @@ QueuedInvalidationCheckFault (
if (FaultReg & (B_FSTS_REG_IQE | B_FSTS_REG_ITE | B_FSTS_REG_ICE)) {
IqercdReg.Uint64 = MmioRead64 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_IQERCD_REG);
- DEBUG((DEBUG_ERROR, "Detect Queue Invalidation Error [0x%08x] - IQERCD [0x%016lx]\n", FaultReg, IqercdReg.Uint64));
+ DEBUG((DEBUG_ERROR, "VTD 0x%x Detect Queue Invalidation Error [0x%08x] - IQERCD [0x%016lx]\n", mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress, FaultReg, IqercdReg.Uint64));
MmioWrite32 (mVtdUnitInformation[VtdIndex].VtdUnitBaseAddress + R_FSTS_REG, FaultReg);
return RETURN_DEVICE_ERROR;
@@ -802,7 +800,7 @@ DumpVtdCapRegs (
IN VTD_CAP_REG *CapReg
)
{
- DEBUG((DEBUG_INFO, " CapReg - 0x%x\n", CapReg->Uint64));
+ DEBUG((DEBUG_INFO, " CapReg - 0x%016lx\n", CapReg->Uint64));
DEBUG((DEBUG_INFO, " ND - 0x%x\n", CapReg->Bits.ND));
DEBUG((DEBUG_INFO, " AFL - 0x%x\n", CapReg->Bits.AFL));
DEBUG((DEBUG_INFO, " RWBF - 0x%x\n", CapReg->Bits.RWBF));
@@ -833,7 +831,7 @@ DumpVtdECapRegs (
IN VTD_ECAP_REG *ECapReg
)
{
- DEBUG((DEBUG_INFO, " ECapReg - 0x%x\n", ECapReg->Uint64));
+ DEBUG((DEBUG_INFO, " ECapReg - 0x%016lx\n", ECapReg->Uint64));
DEBUG((DEBUG_INFO, " C - 0x%x\n", ECapReg->Bits.C));
DEBUG((DEBUG_INFO, " QI - 0x%x\n", ECapReg->Bits.QI));
DEBUG((DEBUG_INFO, " DT - 0x%x\n", ECapReg->Bits.DT));
diff --git a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/VtdReg.c b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/VtdReg.c
index 2e252fe5b..03b39d183 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/VtdReg.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/VtdReg.c
@@ -54,6 +54,7 @@ FlushWriteBuffer (
if (CapReg.Bits.RWBF != 0) {
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
+ Reg32 = (Reg32 & 0x96FFFFFF); // Reset the one-shot bits
MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32 | B_GMCD_REG_WBF);
do {
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
diff --git a/Silicon/Intel/IntelSiliconPkg/Library/IntelVTdPeiDxeLib/IntelVTdPeiDxeLib.c b/Silicon/Intel/IntelSiliconPkg/Library/IntelVTdPeiDxeLib/IntelVTdPeiDxeLib.c
index 3e22c3d92..135e740d6 100644
--- a/Silicon/Intel/IntelSiliconPkg/Library/IntelVTdPeiDxeLib/IntelVTdPeiDxeLib.c
+++ b/Silicon/Intel/IntelSiliconPkg/Library/IntelVTdPeiDxeLib/IntelVTdPeiDxeLib.c
@@ -1497,6 +1497,7 @@ VtdLibFlushWriteBuffer (
if (CapReg.Bits.RWBF != 0) {
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
+ Reg32 = (Reg32 & 0x96FFFFFF); // Reset the one-shot bits
MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32 | B_GMCD_REG_WBF);
do {
Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
@@ -1664,7 +1665,6 @@ VtdLibDisableQueuedInvalidationInterface (
IN UINTN VtdUnitBaseAddress
)
{
- UINT32 Reg32;
QI_256_DESC QiDesc;
QiDesc.Uint64[0] = QI_IWD_TYPE;
@@ -1674,14 +1674,8 @@ VtdLibDisableQueuedInvalidationInterface (
VtdLibSubmitQueuedInvalidationDescriptor (VtdUnitBaseAddress, &QiDesc, TRUE);
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- Reg32 &= (~B_GMCD_REG_QIE);
- MmioWrite32 (VtdUnitBaseAddress + R_GCMD_REG, Reg32);
-
- DEBUG ((DEBUG_INFO, "Disable Queued Invalidation Interface. [%x] GCMD_REG = 0x%x\n", VtdUnitBaseAddress, Reg32));
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_GSTS_REG);
- } while ((Reg32 & B_GSTS_REG_QIES) != 0);
+ DEBUG ((DEBUG_INFO, "Disable Queued Invalidation Interface. [%x]\n", VtdUnitBaseAddress));
+ VtdLibClearGlobalCommandRegisterBits (VtdUnitBaseAddress, B_GMCD_REG_QIE);
MmioWrite64 (VtdUnitBaseAddress + R_IQA_REG, 0);
}
--
2.26.2.windows.1
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next reply other threads:[~2024-02-20 3:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-20 3:36 Sheng Wei [this message]
[not found] <17B574F2916A4457.20004@groups.io>
2024-02-29 7:09 ` [edk2-devel] [PATCH] IntelSiliconPkg/VTd: Reset the one-shot bits before modifing GCMD_REG Huang, Jenny
2024-02-29 7:45 ` Sheng Wei
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