Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 37a33f02aa1ab89f392da7d06ec3578fda1b6182
https://github.com/tianocore/edk2/commit/37a33f02aa1ab89f392da7d06ec3578fda1b6182
Author: Lou, Yun <yun....@intel.com>
Date: 2021-10-20 (Wed, 20 Oct 2021)
Changed paths:
M UefiCpuPkg/Library/RegisterCpuFeaturesLib/CpuFeaturesInitialize.c
Log Message:
-----------
UefiCpuPkg: Cpu feature data stored in memory may be migrated
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3634
The memory allocated through "PeiAllocatePool" is located in HOB, and
in DXE phase, the HOB will be migrated to a different location.
After the migration, the data stored in the HOB stays the same, but the
address of pointer to the memory(such as the pointers in ACPI_CPU_DATA
structure) changes, which may cause "PiSmmCpuDxeSmm" driver can't find
the memory(the pointers in ACPI_CPU_DATA structure) that allocated in
"PeiRegisterCpuFeaturesLib", so use "PeiAllocatePages" to allocate
memory instead.
Signed-off-by: Jason Lou <yun....@intel.com>
Reviewed-by: Ray Ni <ray...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Cc: Laszlo Ersek <ler...@redhat.com>
Cc: Rahul Kumar <rahul1.ku...@intel.com>
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