From f696ed61ff611faef2c93cc9e207557ac84cde00 Mon Sep 17 00:00:00 2001
From: Patrick Williams <iawillia@us.ibm.com>
Date: Thu, 7 Apr 2011 09:27:21 -0500
Subject: VBU: dcbz cache lines after code image to ensure they are in the L3.

---
 src/kernel/kernel.C | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'src/kernel')

diff --git a/src/kernel/kernel.C b/src/kernel/kernel.C
index dc073631e..f39290a09 100644
--- a/src/kernel/kernel.C
+++ b/src/kernel/kernel.C
@@ -10,6 +10,7 @@
 #include <kernel/taskmgr.H>
 #include <kernel/vmmmgr.H>
 #include <kernel/timemgr.H>
+#include <sys/vfs.h>
 
 #include <stdlib.h>
 
@@ -74,6 +75,15 @@ void Kernel::cppBootstrap()
 
 void Kernel::memBootstrap()
 {
+    // Populate L3 cache lines after code space.
+    uint64_t* cache_line = (uint64_t*) VFS_LAST_ADDRESS;
+    uint64_t* end_cache_line = (uint64_t*) VmmManager::FULL_MEM_SIZE;
+    while (cache_line != end_cache_line)
+    {
+        dcbz(cache_line);
+        cache_line++;
+    }
+
     PageManager::init();
     HeapManager::init();
     VmmManager::init();
-- 
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