[PATCH 5/11] PPC64: remove the paca pointer form the naca

[Stephen Rothwell]

Hi Andrew,

The only place that was using the paca pointer that was in the naca was
some assembler that used it to find a parameter to pass to some C code. 
That C code did not even declare that parameter!

Remove the paca pointer.

Signed-off-by: Stephen Rothwell <sfr at canb.auug.org.au>
-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
http://www.canb.auug.org.au/~sfr/

diff -ruN linus-bk-naca.4/arch/ppc64/kernel/asm-offsets.c linus-bk-naca.5/arch/ppc64/kernel/asm-offsets.c
--- linus-bk-naca.4/arch/ppc64/kernel/asm-offsets.c	2004-12-31 14:52:14.000000000 +1100
+++ linus-bk-naca.5/arch/ppc64/kernel/asm-offsets.c	2004-12-10 17:27:14.000000000 +1100
@@ -28,7 +28,6 @@
 #include <asm/pgtable.h>
 #include <asm/processor.h>
 
-#include <asm/naca.h>
 #include <asm/paca.h>
 #include <asm/iSeries/ItLpPaca.h>
 #include <asm/iSeries/ItLpQueue.h>
@@ -68,8 +67,6 @@
 #endif /* CONFIG_ALTIVEC */
 	DEFINE(MM, offsetof(struct task_struct, mm));
 
-	/* naca */
-        DEFINE(PACA, offsetof(struct naca_struct, paca));
 	DEFINE(DCACHEL1LINESIZE, offsetof(struct ppc64_caches, dline_size));
 	DEFINE(DCACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_dline_size));
 	DEFINE(DCACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, dlines_per_page));
diff -ruN linus-bk-naca.4/arch/ppc64/kernel/head.S linus-bk-naca.5/arch/ppc64/kernel/head.S
--- linus-bk-naca.4/arch/ppc64/kernel/head.S	2004-11-26 12:08:51.000000000 +1100
+++ linus-bk-naca.5/arch/ppc64/kernel/head.S	2004-12-10 18:40:24.000000000 +1100
@@ -517,12 +517,7 @@
 __start_naca:
 #ifdef CONFIG_PPC_ISERIES
 	.llong itVpdAreas
-#else
-	.llong 0x0
 #endif
-	.llong 0x0
-	.llong 0x0
-	.llong paca
 
 	. = SYSTEMCFG_PHYS_ADDR
 	.globl __end_naca
@@ -1241,6 +1236,7 @@
 #endif
 #endif
 	b 	3b			/* Loop until told to go	 */
+
 #ifdef CONFIG_PPC_ISERIES
 _STATIC(__start_initialization_iSeries)
 	/* Clear out the BSS */
@@ -1278,10 +1274,6 @@
 	SET_REG_TO_CONST(r4, NACA_VIRT_ADDR)
 	std	r4,0(r9)		/* set the naca pointer */
 
-	/* Get the pointer to the segment table */
-	ld	r6,PACA(r4)		/* Get the base paca pointer	*/
-	ld	r4,PACASTABVIRT(r6)
-
 	bl	.iSeries_early_setup
 
 	/* relocation is on at this point */
diff -ruN linus-bk-naca.4/include/asm-ppc64/naca.h linus-bk-naca.5/include/asm-ppc64/naca.h
--- linus-bk-naca.4/include/asm-ppc64/naca.h	2004-12-31 14:53:21.000000000 +1100
+++ linus-bk-naca.5/include/asm-ppc64/naca.h	2004-12-10 18:42:14.000000000 +1100
@@ -11,7 +11,6 @@
  */
 
 #include <asm/types.h>
-#include <asm/systemcfg.h>
 
 #ifndef __ASSEMBLY__
 
@@ -20,7 +19,6 @@
 	void *xItVpdAreas;              /* VPD Data                  0x00 */
 	void *xRamDisk;                 /* iSeries ramdisk           0x08 */
 	u64   xRamDiskSize;		/* In pages                  0x10 */
-	struct paca_struct *paca;	/* Ptr to an array of pacas  0x18 */
 	u64 debug_switch;		/* Debug print control       0x20 */
 	u64 banner;                     /* Ptr to banner string      0x28 */
 	u64 log;                        /* Ptr to log buffer         0x30 */
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