Update BOLT+SPE

Change-Id: Ic5ef1a9fb08aed16511e4e0f04c03bbb978bd106

Author: paschalis-mpeis

content/learning-paths/servers-and-cloud-computing/bolt/before-you-begin.md

@@ -139,6 +139,7 @@ arm_spe_0//        [Kernel PMU event]
 ```
 
 If `arm_spe` isn't found you will need to update the Linux Kernel and perf to 5.15 or later.
+To enable it see [Enable the SPE feature in Linux guide](https://developer.arm.com/documentation/ka005362/1-0).
 
 To confirm SPE is working run:
 
@@ -175,4 +176,4 @@ For Clang:
 
 ```bash
 clang <args> -Wl,--emit-relocs
-```
+```

content/learning-paths/servers-and-cloud-computing/bolt/bolt-spe.md

@@ -1,5 +1,5 @@
 ---
-title: Using BOLT with SPE
+title: Use BOLT with SPE
 weight: 6
 
 ### FIXED, DO NOT MODIFY
@@ -8,7 +8,12 @@ layout: learningpathall
 
 ## BOLT with SPE
 
-The steps to optimize an executable with BOLT using Perf SPE is below.
+{{% notice Important Note %}}
+Currently, BOLT may not generate a faster binary when using Perf SPE due to limitations within `perf` and BOLT itself.
+For more information and the latest updates see: [[AArch64] BOLT does not support SPE branch data](https://github.com/llvm/llvm-project/issues/115333).
+{{% /notice %}}
+
+The steps to use BOLT with Perf SPE are listed below.
 
 ### Collect Perf data with SPE