mirror of https://github.com/acidanthera/audk.git
1c5c7bcd1d
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3182 Fix the order of operations in ApWakeupFunction() when PcdCpuApLoopMode is set to HLT mode that uses INIT-SIPI-SIPI to wake APs. In this mode, volatile state is restored and saved each time a INIT-SIPI-SIPI is sent to an AP to request a function to be executed on the AP. When the function is completed the volatile state of the AP is saved. However, the counters NumApsExecuting and FinishedCount are updated before the volatile state is saved. This allows for a race condition window for the BSP that is waiting on these counters to request a new INIT-SIPI-SIPI before all the APs have completely saved their volatile state. The fix is to save the AP volatile state before updating the NumApsExecuting and FinishedCount counters. Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com> Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> |
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| .. | ||
| BaseUefiCpuLib | ||
| BaseXApicLib | ||
| BaseXApicX2ApicLib | ||
| CpuCacheInfoLib | ||
| CpuCommonFeaturesLib | ||
| CpuExceptionHandlerLib | ||
| CpuTimerLib | ||
| MpInitLib | ||
| MpInitLibUp | ||
| MtrrLib | ||
| PlatformSecLibNull | ||
| RegisterCpuFeaturesLib | ||
| SecPeiDxeTimerLibUefiCpu | ||
| SmmCpuFeaturesLib | ||
| SmmCpuPlatformHookLibNull | ||
| VmgExitLibNull | ||