[edk2-devel] [PATCH v1 0/2] UefiCpuPkg: AMD procesor MSR_IA32_MISC_ENABLE

[Kirkendall, Garrett]

AMD processor does not support MSR_IA32_MISC_ENABLE register.  Accessing
this register on AMD causes an unhandled exception in SmmEntry.nasm and
a subsequent failure to boot since this is too early in SMM path for the
exception handler to be loaded.

First, to distinguish between AMD and other processors, refactor
StandardSignatureIsAuthenticAMD into BaseUefiCpuLib.  So there is only
one copy in the source. All changed modules already include UefiCpuLib
either directly or indirectly so could not easly split first patch.

Second, Skip manipulation of MSR_IA32_MISC_ENABLE register if running
on an AMD processor.

Tested on AMD X64 processor.

Modified source patching in 2/2 for FALSE
and TRUE to test failure and passing case when AMD processor detected.
Did not have a way to test UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm.

Test BIOS used following components:
UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.inf
UefiCpuPkg/Library/MpInitLib/MpLib.c
UefiCpuPkg/PiSmmCpuDxeSmm in X64 mode

Garrett Kirkendall (2):
  UefiCpuPkg: Move StandardSignatureIsAuthenticAMD to BaseUefiCpuLib
  UefiCpuPkg: PiSmmCpuDxeSmm skip MSR_IA32_MISC_ENABLE manipulation on
    AMD

 UefiCpuPkg/Library/BaseUefiCpuLib/BaseUefiCpuLib.inf         |  7 ++++
 UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.inf             |  2 ++
 UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.inf |  2 ++
 UefiCpuPkg/Include/Library/UefiCpuLib.h                      | 14 ++++++++
 UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfileInternal.h               |  3 ++
 UefiCpuPkg/Library/BaseUefiCpuLib/BaseUefiCpuLib.c           | 38 ++++++++++++++++++++
 UefiCpuPkg/Library/BaseXApicLib/BaseXApicLib.c               | 25 ++-----------
 UefiCpuPkg/Library/BaseXApicX2ApicLib/BaseXApicX2ApicLib.c   | 25 ++-----------
 UefiCpuPkg/Library/MpInitLib/MpLib.c                         | 23 ------------
 UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c                       |  9 ++++-
 UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm                 | 19 ++++++++--
 UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.nasm                  | 20 +++++++++--
 12 files changed, 113 insertions(+), 74 deletions(-)
 create mode 100644 UefiCpuPkg/Library/BaseUefiCpuLib/BaseUefiCpuLib.c

Changes at:
https://github.com/gkirkendall-amd/edk2/tree/smmentry_nasm_skip_msr_xd_bit_on_amd

Cc: Eric Dong <eric.dong at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Cc: Laszlo Ersek <lersek at redhat.com>
Signed-off-by: Garrett Kirkendall <garrett.kirkendall at amd.com>

-- 
2.27.0


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