[PATCH -v1.1] x86/topology: Document cpu_llc_id

From: Borislav Petkov
Date: Thu Nov 17 2016 - 04:46:10 EST

It means different things on Intel and AMD so write it down so that
there's no confusion.

Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Yazen Ghannam <yazen.ghannam@xxxxxxx>
Documentation/x86/topology.txt | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/Documentation/x86/topology.txt b/Documentation/x86/topology.txt
index 06afac252f5b..f3e9d7e9ed6c 100644
--- a/Documentation/x86/topology.txt
+++ b/Documentation/x86/topology.txt
@@ -63,6 +63,15 @@ The topology of a system is described in the units of:
The maximum possible number of packages in the system. Helpful for per
package facilities to preallocate per package information.

+ - cpu_llc_id:
+ A per-CPU variable containing:
+ - On Intel, the first APIC ID of the list of CPUs sharing the Last Level
+ Cache
+ - On AMD, the Node ID or Core Complex ID containing the Last Level
+ Cache. In general, it is a number identifying an LLC uniquely on the
+ system.

* Cores:



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