]> git.proxmox.com Git - mirror_edk2.git/commit
UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile: Fix BTS support check bug
authorJeff Fan <jeff.fan@intel.com>
Tue, 5 Apr 2016 06:28:49 +0000 (14:28 +0800)
committerMichael Kinney <michael.d.kinney@intel.com>
Mon, 16 May 2016 17:40:16 +0000 (10:40 -0700)
commit4b1f9ac19de8775b484c2b16d3050cd279249477
treecbb1c6605003df7cc167a3d180b7a811ec88693c
parent7b1fe7acdca15be49a9421156b799ed7394f7bac
UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile: Fix BTS support check bug

SmmProfile feature depends on BTS feature to get the invoker IP (in SMM) from
last branch record. If this feature is not supported, SmmProfile cannot get the
invoker IP (in SMM). Per IA-32 Architectures Software Developer's Manual, BTS
feature is detected by IA32_MISC_ENABLE. If BIT11 of IA32_MISC_ENABLE is set,
BTS is not supported. But current implementation check BIT11 opposite. Also, BTS
feature does not depends on PEBS feature if supported or not.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Shifflett, Joseph <joseph.shifflett@hpe.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Reported-by: Shifflett, Joseph <joseph.shifflett@hpe.com>
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Shifflett, Joseph <joseph.shifflett@hpe.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
UefiCpuPkg/PiSmmCpuDxeSmm/SmmProfile.c