diff options
Diffstat (limited to 'UefiCpuPkg/PiSmmCpuDxeSmm')
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c | 25 | ||||
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h | 3 | ||||
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c | 10 | ||||
| -rw-r--r-- | UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.h | 6 |
4 files changed, 23 insertions, 21 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c index 185cb3d593..952cc87a20 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c @@ -1013,13 +1013,14 @@ SmiRendezvous ( IN UINTN CpuIndex
)
{
- EFI_STATUS Status;
- BOOLEAN ValidSmi;
- BOOLEAN IsBsp;
- BOOLEAN BspInProgress;
- UINTN Index;
- UINTN Cr2;
- BOOLEAN XdDisableFlag;
+ EFI_STATUS Status;
+ BOOLEAN ValidSmi;
+ BOOLEAN IsBsp;
+ BOOLEAN BspInProgress;
+ UINTN Index;
+ UINTN Cr2;
+ BOOLEAN XdDisableFlag;
+ MSR_IA32_MISC_ENABLE_REGISTER MiscEnableMsr;
//
// Save Cr2 because Page Fault exception in SMM may override its value
@@ -1083,9 +1084,11 @@ SmiRendezvous ( //
XdDisableFlag = FALSE;
if (mXdSupported) {
- if ((AsmReadMsr64 (MSR_IA32_MISC_ENABLE) & B_XD_DISABLE_BIT) != 0) {
+ MiscEnableMsr.Uint64 = AsmReadMsr64 (MSR_IA32_MISC_ENABLE);
+ if (MiscEnableMsr.Bits.XD == 1) {
XdDisableFlag = TRUE;
- AsmMsrAnd64 (MSR_IA32_MISC_ENABLE, ~B_XD_DISABLE_BIT);
+ MiscEnableMsr.Bits.XD = 0;
+ AsmWriteMsr64 (MSR_IA32_MISC_ENABLE, MiscEnableMsr.Uint64);
}
ActivateXd ();
}
@@ -1176,7 +1179,9 @@ SmiRendezvous ( // Restore XD
//
if (XdDisableFlag) {
- AsmMsrOr64 (MSR_IA32_MISC_ENABLE, B_XD_DISABLE_BIT);
+ MiscEnableMsr.Uint64 = AsmReadMsr64 (MSR_IA32_MISC_ENABLE);
+ MiscEnableMsr.Bits.XD = 1;
+ AsmWriteMsr64 (MSR_IA32_MISC_ENABLE, MiscEnableMsr.Uint64);
}
}
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h index 9920cd1d1e..94a9345d11 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h @@ -1,7 +1,7 @@ /** @file
Agent Module to load other modules to deploy SMM Entry Vector for X86 CPU.
-Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -53,6 +53,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include <CpuHotPlugData.h>
#include <Register/Cpuid.h>
+#include <Register/Msr.h>
#include "CpuService.h"
#include "SmmProfile.h"
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c index 8ecc5415a3..f9cea55d9d 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c @@ -934,8 +934,9 @@ CheckFeatureSupported ( IN OUT VOID *Buffer
)
{
- UINT32 RegEax;
- UINT32 RegEdx;
+ UINT32 RegEax;
+ UINT32 RegEdx;
+ MSR_IA32_MISC_ENABLE_REGISTER MiscEnableMsr;
if (mXdSupported) {
AsmCpuid (CPUID_EXTENDED_FUNCTION, &RegEax, NULL, NULL, NULL);
@@ -966,9 +967,10 @@ CheckFeatureSupported ( // BTINT bits in the MSR_DEBUGCTLA MSR.
// 2. The IA32_DS_AREA MSR can be programmed to point to the DS save area.
//
- if (AsmMsrBitFieldRead64 (MSR_IA32_MISC_ENABLE, 11, 11) == 1) {
+ MiscEnableMsr.Uint64 = AsmReadMsr64 (MSR_IA32_MISC_ENABLE);
+ if (MiscEnableMsr.Bits.BTS == 1) {
//
- // BTS facilities is not supported if MSR_IA32_MISC_ENABLE BIT11 is set.
+ // BTS facilities is not supported if MSR_IA32_MISC_ENABLE.BTS bit is set.
//
mBtsSupported = FALSE;
}
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.h b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.h index 5488c148e8..328d2b9758 100644 --- a/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.h +++ b/UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.h @@ -17,12 +17,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include "SmmProfileInternal.h"
-///
-/// MSR Register Index
-///
-#define MSR_IA32_MISC_ENABLE 0x1A0
-#define B_XD_DISABLE_BIT BIT34
-
//
// External functions
//
|