---

yaml
---
r: 91527
b: refs/heads/master
c: 3eb9cf0
h: refs/heads/master
i:
  91525: 938fd98
  91523: 0ddd891
  91519: a3321f5
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a7e695f6bf37f829a01e693a1569e96a842a1017
+refs/heads/master: 3eb9cf076180ed2003db77bd2c33ac4ed0211089

trunk/arch/powerpc/kernel/asm-offsets.c

@@ -44,6 +44,9 @@
 #include <asm/mmu.h>
 #include <asm/hvcall.h>
 #endif
+#ifdef CONFIG_PPC_ISERIES
+#include <asm/iseries/alpaca.h>
+#endif
 
 #define DEFINE(sym, val) \
 	asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -321,6 +324,9 @@ int main(void)
 	DEFINE(PAGE_OFFSET_VSID, KERNEL_VSID(PAGE_OFFSET));
 	DEFINE(VMALLOC_START_ESID, GET_ESID(VMALLOC_START));
 	DEFINE(VMALLOC_START_VSID, KERNEL_VSID(VMALLOC_START));
+
+	/* alpaca */
+	DEFINE(ALPACA_SIZE, sizeof(struct alpaca));
 #endif
 
 	DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);

trunk/arch/powerpc/platforms/iseries/exception.S

@@ -38,11 +38,19 @@
 
 	.globl system_reset_iSeries
 system_reset_iSeries:
-	mfspr	r13,SPRN_SPRG3		/* Get paca address */
+	mfspr	r13,SPRN_SPRG3		/* Get alpaca address */
+	LOAD_REG_IMMEDIATE(r23, alpaca)
+	li	r0,ALPACA_SIZE
+	sub	r23,r13,r23
+	divdu	r23,r23,r0		/* r23 has cpu number */
+	LOAD_REG_IMMEDIATE(r13, paca)
+	mulli	r0,r23,PACA_SIZE
+	add	r13,r13,r0
+	mtspr	SPRN_SPRG3,r13		/* Save it away for the future */
 	mfmsr	r24
 	ori	r24,r24,MSR_RI
 	mtmsrd	r24			/* RI on */
-	lhz	r24,PACAPACAINDEX(r13)	/* Get processor # */
+	mr	r24,r23
 	cmpwi	0,r24,0			/* Are we processor 0? */
 	bne	1f
 	b	.__start_initialization_iSeries	/* Start up the first processor */

trunk/arch/powerpc/platforms/iseries/lpardata.c

@@ -18,6 +18,7 @@
 #include <asm/paca.h>
 #include <asm/iseries/lpar_map.h>
 #include <asm/iseries/it_lp_queue.h>
+#include <asm/iseries/alpaca.h>
 
 #include "naca.h"
 #include "vpd_areas.h"
@@ -159,6 +160,40 @@ struct SpCommArea xSpCommArea = {
 	.xFormat = 1,
 };
 
+#define ALPACA_INIT(number)						\
+{									\
+	.lppaca_ptr = &lppaca[number],					\
+	.reg_save_ptr = &iseries_reg_save[number],			\
+}
+
+struct alpaca alpaca[] = {
+	ALPACA_INIT( 0),
+#if NR_CPUS > 1
+	ALPACA_INIT( 1), ALPACA_INIT( 2), ALPACA_INIT( 3),
+#if NR_CPUS > 4
+	ALPACA_INIT( 4), ALPACA_INIT( 5), ALPACA_INIT( 6), ALPACA_INIT( 7),
+#if NR_CPUS > 8
+	ALPACA_INIT( 8), ALPACA_INIT( 9), ALPACA_INIT(10), ALPACA_INIT(11),
+	ALPACA_INIT(12), ALPACA_INIT(13), ALPACA_INIT(14), ALPACA_INIT(15),
+	ALPACA_INIT(16), ALPACA_INIT(17), ALPACA_INIT(18), ALPACA_INIT(19),
+	ALPACA_INIT(20), ALPACA_INIT(21), ALPACA_INIT(22), ALPACA_INIT(23),
+	ALPACA_INIT(24), ALPACA_INIT(25), ALPACA_INIT(26), ALPACA_INIT(27),
+	ALPACA_INIT(28), ALPACA_INIT(29), ALPACA_INIT(30), ALPACA_INIT(31),
+#if NR_CPUS > 32
+	ALPACA_INIT(32), ALPACA_INIT(33), ALPACA_INIT(34), ALPACA_INIT(35),
+	ALPACA_INIT(36), ALPACA_INIT(37), ALPACA_INIT(38), ALPACA_INIT(39),
+	ALPACA_INIT(40), ALPACA_INIT(41), ALPACA_INIT(42), ALPACA_INIT(43),
+	ALPACA_INIT(44), ALPACA_INIT(45), ALPACA_INIT(46), ALPACA_INIT(47),
+	ALPACA_INIT(48), ALPACA_INIT(49), ALPACA_INIT(50), ALPACA_INIT(51),
+	ALPACA_INIT(52), ALPACA_INIT(53), ALPACA_INIT(54), ALPACA_INIT(55),
+	ALPACA_INIT(56), ALPACA_INIT(57), ALPACA_INIT(58), ALPACA_INIT(59),
+	ALPACA_INIT(60), ALPACA_INIT(61), ALPACA_INIT(62), ALPACA_INIT(63),
+#endif
+#endif
+#endif
+#endif
+};
+
 /* The LparMap data is now located at offset 0x6000 in head.S
  * It was put there so that the HvReleaseData could address it
  * with a 32-bit offset as required by the iSeries hypervisor
@@ -185,7 +220,7 @@ struct ItVpdAreas itVpdAreas = {
 	.xSlicVpdLens = {			/* VPD lengths */
 	        0,0,0,		        /*  0 - 2 */
 		sizeof(xItExtVpdPanel), /*       3 Extended VPD   */
-		sizeof(struct paca_struct),	/*       4 length of Paca  */
+		sizeof(struct alpaca),	/*       4 length of (fake) Paca  */
 		0,			/*       5 */
 		sizeof(struct ItIplParmsReal),/* 6 length of IPL parms */
 		26992,			/*	 7 length of MS VPD */
@@ -203,7 +238,7 @@ struct ItVpdAreas itVpdAreas = {
 	.xSlicVpdAdrs = {			/* VPD addresses */
 		0,0,0,			/*	 0 -  2 */
 		&xItExtVpdPanel,        /*       3 Extended VPD */
-		&paca[0],		/*       4 first Paca */
+		&alpaca[0],		/*       4 first (fake) Paca */
 		0,			/*       5 */
 		&xItIplParmsReal,	/*	 6 IPL parms */
 		&xMsVpd,		/*	 7 MS Vpd */

trunk/include/asm-powerpc/iseries/alpaca.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright © 2008  Stephen Rothwell IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+#ifndef _ASM_POWERPC_ISERIES_ALPACA_H
+#define _ASM_POWERPC_ISERIES_ALPACA_H
+
+/*
+ * This is the part of the paca that the iSeries hypervisor
+ * needs to be statically initialised. Immediately after boot
+ * we switch to the normal Linux paca.
+ */
+struct alpaca {
+	struct lppaca *lppaca_ptr;	/* Pointer to LpPaca for PLIC */
+	void *reg_save_ptr;		/* Pointer to LpRegSave for PLIC */
+};
+
+#endif /* _ASM_POWERPC_ISERIES_ALPACA_H */