diff options
| author | Ray Ni <ray.ni@intel.com> | 2021-01-19 16:54:37 +0100 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-01-20 18:20:14 +0000 |
| commit | cefad282fb31aff3e1a6dcbd368cbbffc3fce900 (patch) | |
| tree | c4837ee28e1d01b3f6634d036371abcbecd36438 /UefiCpuPkg/Library/RegisterCpuFeaturesLib | |
| parent | e843a21e23ea605502f55ff2dbeeaf814d2aef9e (diff) | |
| download | edk2-cefad282fb31aff3e1a6dcbd368cbbffc3fce900.tar.gz edk2-cefad282fb31aff3e1a6dcbd368cbbffc3fce900.tar.bz2 edk2-cefad282fb31aff3e1a6dcbd368cbbffc3fce900.zip | |
UefiCpuPkg/CpuFeature: Don't assume CpuS3DataDxe alloc RegisterTable
There are lots of fields in ACPI_CPU_DATA structure while only
followings are accessed by CpuFeature infra:
* NumberOfCpus
* PreSmmInitRegisterTable // pointer
* RegisterTable // pointer
* CpuStatus
* ApLocation // pointer
So it's possible that an implementation of CpuS3DataDxe doesn't
allocate memory for PreSmmInitRegisterTable/RegisterTable/ApLocation.
This patch handles the case when CpuS3DataDxe doesn't allocate
memory for PreSmmInitRegisterTable/RegisterTable.
Cc: Eric Dong <eric.dong@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3159
Signed-off-by: Ray Ni <ray.ni@intel.com>
[lersek@redhat.com: update CC list, add BZ reference, add my S-o-b]
[lersek@redhat.com: deal with RegisterTable and PreSmmInitRegisterTable
being zero independently of each other; replacing the ASSERT()]
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210119155440.2262-2-lersek@redhat.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Diffstat (limited to 'UefiCpuPkg/Library/RegisterCpuFeaturesLib')
| -rw-r--r-- | UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c | 72 |
1 files changed, 39 insertions, 33 deletions
diff --git a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c index 4063d45760..7bb9240402 100644 --- a/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c +++ b/UefiCpuPkg/Library/RegisterCpuFeaturesLib/RegisterCpuFeaturesLib.c @@ -1,7 +1,7 @@ /** @file
CPU Register Table Library functions.
- Copyright (c) 2017 - 2020, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2017 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -937,45 +937,51 @@ GetAcpiCpuData ( EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer;
AcpiCpuData = (ACPI_CPU_DATA *) (UINTN) PcdGet64 (PcdCpuS3DataAddress);
- if (AcpiCpuData != NULL) {
- return AcpiCpuData;
- }
-
- AcpiCpuData = AllocatePages (EFI_SIZE_TO_PAGES (sizeof (ACPI_CPU_DATA)));
- ASSERT (AcpiCpuData != NULL);
+ if (AcpiCpuData == NULL) {
+ AcpiCpuData = AllocatePages (EFI_SIZE_TO_PAGES (sizeof (ACPI_CPU_DATA)));
+ ASSERT (AcpiCpuData != NULL);
+ ZeroMem (AcpiCpuData, sizeof (ACPI_CPU_DATA));
- //
- // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure
- //
- Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);
- ASSERT_EFI_ERROR (Status);
+ //
+ // Set PcdCpuS3DataAddress to the base address of the ACPI_CPU_DATA structure
+ //
+ Status = PcdSet64S (PcdCpuS3DataAddress, (UINT64)(UINTN)AcpiCpuData);
+ ASSERT_EFI_ERROR (Status);
- GetNumberOfProcessor (&NumberOfCpus, &NumberOfEnabledProcessors);
- AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;
+ GetNumberOfProcessor (&NumberOfCpus, &NumberOfEnabledProcessors);
+ AcpiCpuData->NumberOfCpus = (UINT32)NumberOfCpus;
+ }
- //
- // Allocate buffer for empty RegisterTable and PreSmmInitRegisterTable for all CPUs
- //
- TableSize = 2 * NumberOfCpus * sizeof (CPU_REGISTER_TABLE);
- RegisterTable = AllocatePages (EFI_SIZE_TO_PAGES (TableSize));
- ASSERT (RegisterTable != NULL);
+ if (AcpiCpuData->RegisterTable == 0 ||
+ AcpiCpuData->PreSmmInitRegisterTable == 0) {
+ //
+ // Allocate buffer for empty RegisterTable and PreSmmInitRegisterTable for all CPUs
+ //
+ TableSize = 2 * NumberOfCpus * sizeof (CPU_REGISTER_TABLE);
+ RegisterTable = AllocatePages (EFI_SIZE_TO_PAGES (TableSize));
+ ASSERT (RegisterTable != NULL);
- for (Index = 0; Index < NumberOfCpus; Index++) {
- Status = GetProcessorInformation (Index, &ProcessorInfoBuffer);
- ASSERT_EFI_ERROR (Status);
+ for (Index = 0; Index < NumberOfCpus; Index++) {
+ Status = GetProcessorInformation (Index, &ProcessorInfoBuffer);
+ ASSERT_EFI_ERROR (Status);
- RegisterTable[Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
- RegisterTable[Index].TableLength = 0;
- RegisterTable[Index].AllocatedSize = 0;
- RegisterTable[Index].RegisterTableEntry = 0;
+ RegisterTable[Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
+ RegisterTable[Index].TableLength = 0;
+ RegisterTable[Index].AllocatedSize = 0;
+ RegisterTable[Index].RegisterTableEntry = 0;
- RegisterTable[NumberOfCpus + Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
- RegisterTable[NumberOfCpus + Index].TableLength = 0;
- RegisterTable[NumberOfCpus + Index].AllocatedSize = 0;
- RegisterTable[NumberOfCpus + Index].RegisterTableEntry = 0;
+ RegisterTable[NumberOfCpus + Index].InitialApicId = (UINT32)ProcessorInfoBuffer.ProcessorId;
+ RegisterTable[NumberOfCpus + Index].TableLength = 0;
+ RegisterTable[NumberOfCpus + Index].AllocatedSize = 0;
+ RegisterTable[NumberOfCpus + Index].RegisterTableEntry = 0;
+ }
+ if (AcpiCpuData->RegisterTable == 0) {
+ AcpiCpuData->RegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)RegisterTable;
+ }
+ if (AcpiCpuData->PreSmmInitRegisterTable == 0) {
+ AcpiCpuData->PreSmmInitRegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)(RegisterTable + NumberOfCpus);
+ }
}
- AcpiCpuData->RegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)RegisterTable;
- AcpiCpuData->PreSmmInitRegisterTable = (EFI_PHYSICAL_ADDRESS)(UINTN)(RegisterTable + NumberOfCpus);
return AcpiCpuData;
}
|