[edk2-devel] [PATCH] UefiCpuPkg/MpService: GetProcessorInfo returns 6-level topology

Ni, Ray posted 1 patch 18 weeks ago
Failed in applying to current master (apply log)
UefiCpuPkg/Library/MpInitLib/MpLib.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)

[edk2-devel] [PATCH] UefiCpuPkg/MpService: GetProcessorInfo returns 6-level topology

Posted by Ni, Ray 18 weeks ago
Intel SDM introduces 6-levels for describing the CPU topology:
* Package
* Module
* Tile
* Die
* Core
* Thread

A PI spec ECR was submitted to enhance CPU_MP PPI/Protocol to
support returning such information through GetProcessorInfo().
An accordingly change was implemented and pushed to edk2-staging.

Now the PI spec has been published.
The patch is cherry-picked from edk2-staging to edk2.

Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
---
 UefiCpuPkg/Library/MpInitLib/MpLib.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index cbc5594c78..ab7a8ed663 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -1879,10 +1879,17 @@ MpInitLibGetProcessorInfo (
   CPU_MP_DATA            *CpuMpData;
   UINTN                  CallerNumber;
   CPU_INFO_IN_HOB        *CpuInfoInHob;
+  UINTN                  OriginalProcessorNumber;
 
   CpuMpData = GetCpuMpData ();
   CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;
 
+  //
+  // Lower 24 bits contains the actual processor number.
+  //
+  OriginalProcessorNumber = ProcessorNumber;
+  ProcessorNumber &= BIT24 - 1;
+
   //
   // Check whether caller processor is BSP
   //
@@ -1923,6 +1930,18 @@ MpInitLibGetProcessorInfo (
     &ProcessorInfoBuffer->Location.Thread
     );
 
+  if ((OriginalProcessorNumber & CPU_V2_EXTENDED_TOPOLOGY) != 0) {
+    GetProcessorLocation2ByApicId (
+      CpuInfoInHob[ProcessorNumber].ApicId,
+      &ProcessorInfoBuffer->ExtendedInformation.Location2.Package,
+      &ProcessorInfoBuffer->ExtendedInformation.Location2.Die,
+      &ProcessorInfoBuffer->ExtendedInformation.Location2.Tile,
+      &ProcessorInfoBuffer->ExtendedInformation.Location2.Module,
+      &ProcessorInfoBuffer->ExtendedInformation.Location2.Core,
+      &ProcessorInfoBuffer->ExtendedInformation.Location2.Thread
+      );
+  }
+
   if (HealthData != NULL) {
     HealthData->Uint32 = CpuInfoInHob[ProcessorNumber].Health;
   }
-- 
2.21.0.windows.1


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