commit c59c464a3e29830bcfae5eea1777cad9e00087f3
author David Gibson <david@gibson.dropbear.id.au> Fri Aug 19 14:52:31 2005 +1000
committer Paul Mackerras <paulus@samba.org> Mon Aug 29 10:53:33 2005 +1000
tree ebf8eb2885e8431c82c011f46138d41630a8ba49
parent ec465515eeb662f66725c8c483a46b6bdd9bdd48

[PATCH] Change address of ppc64 initial segment table

On ppc64 machines with segment tables, CPU0's segment table is at a
fixed address, currently 0x9000.  This patch moves it to the free
space at 0x6000, just below the fwnmi data area.  This saves 8k of
space in vmlinux and the runtime kernel image.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

include/asm-ppc64/mmu.h

diff --git a/include/asm-ppc64/mmu.h b/include/asm-ppc64/mmu.h
index 959a4bf..789c269 100644
--- a/include/asm-ppc64/mmu.h
+++ b/include/asm-ppc64/mmu.h
@@ -28,9 +28,12 @@
 #define STE_VSID_SHIFT	12
 
 /* Location of cpu0's segment table */
-#define STAB0_PAGE	0x9
+#define STAB0_PAGE	0x6
 #define STAB0_PHYS_ADDR	(STAB0_PAGE<<PAGE_SHIFT)
-#define STAB0_VIRT_ADDR	(KERNELBASE+STAB0_PHYS_ADDR)
+
+#ifndef __ASSEMBLY__
+extern char initial_stab[];
+#endif /* ! __ASSEMBLY */
 
 /*
  * SLB