9 files changed, 55 insertions, 114 deletions

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 242a1b7ac759..ddb8b24b823d 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -17,6 +17,7 @@ config PARISC
         select GENERIC_PCI_IOMAP
         select IRQ_PER_CPU
         select ARCH_HAVE_NMI_SAFE_CMPXCHG
+        select GENERIC_SMP_IDLE_THREAD
 
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 19ab7b2ea1cd..dbc3850b1d0d 100644
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -75,7 +75,7 @@ head-y			:= arch/parisc/kernel/head.o
 
 KBUILD_CFLAGS   += $(cflags-y)
 
-kernel-y                        := mm/ kernel/ math-emu/ kernel/init_task.o
+kernel-y                        := mm/ kernel/ math-emu/
 kernel-$(CONFIG_HPUX)           += hpux/
 
 core-y  += $(addprefix arch/parisc/, $(kernel-y))
diff --git a/arch/parisc/include/asm/prefetch.h b/arch/parisc/include/asm/prefetch.h
index c5edc60c059f..1ee7c82672c1 100644
--- a/arch/parisc/include/asm/prefetch.h
+++ b/arch/parisc/include/asm/prefetch.h
@@ -21,7 +21,12 @@
 #define ARCH_HAS_PREFETCH
 static inline void prefetch(const void *addr)
 {
-        __asm__("ldw 0(%0), %%r0" : : "r" (addr));
+        __asm__(
+#ifndef CONFIG_PA20
+                /* Need to avoid prefetch of NULL on PA7300LC */
+                "       extrw,u,= %0,31,32,%%r0\n"
+#endif
+                "       ldw 0(%0), %%r0" : : "r" (addr));
 }
 
 /* LDD is a PA2.0 addition. */
diff --git a/arch/parisc/kernel/Makefile b/arch/parisc/kernel/Makefile
index 67db0722e6ca..66ee3f12df58 100644
--- a/arch/parisc/kernel/Makefile
+++ b/arch/parisc/kernel/Makefile
@@ -2,7 +2,7 @@
 # Makefile for arch/parisc/kernel
 #
 
-extra-y                 := init_task.o head.o vmlinux.lds
+extra-y                 := head.o vmlinux.lds
 
 obj-y           := cache.o pacache.o setup.o traps.o time.o irq.o \
                    pa7300lc.o syscall.o entry.o sys_parisc.o firmware.o \
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 6f0594439143..535034217021 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -581,7 +581,11 @@
          */
         cmpiclr,=       0x01,\tmp,%r0
         ldi             (_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
+#ifdef CONFIG_64BIT
         depd,z          \prot,8,7,\prot
+#else
+        depw,z          \prot,8,7,\prot
+#endif
         /*
          * OK, it is in the temp alias region, check whether "from" or "to".
          * Check "subtle" note in pacache.S re: r23/r26.
diff --git a/arch/parisc/kernel/init_task.c b/arch/parisc/kernel/init_task.c
deleted file mode 100644
index 4a91e433416f..000000000000
--- a/arch/parisc/kernel/init_task.c
+++ /dev/null
@@ -1,70 +0,0 @@
-/* 
- *    Static declaration of "init" task data structure.
- *
- *    Copyright (C) 2000 Paul Bame <bame at parisc-linux.org>
- *    Copyright (C) 2000-2001 John Marvin <jsm at parisc-linux.org>
- *    Copyright (C) 2001 Helge Deller <deller @ parisc-linux.org>
- *    Copyright (C) 2002 Matthew Wilcox <willy with parisc-linux.org>
- *
- *
- *    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
- */
-
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/init_task.h>
-#include <linux/mqueue.h>
-
-#include <asm/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/pgalloc.h>
-
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-/*
- * Initial task structure.
- *
- * We need to make sure that this is 16384-byte aligned due to the
- * way process stacks are handled. This is done by having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union __init_task_data
-        __attribute__((aligned(128))) =
-                { INIT_THREAD_INFO(init_task) };
-
-#if PT_NLEVELS == 3
-/* NOTE: This layout exactly conforms to the hybrid L2/L3 page table layout
- * with the first pmd adjacent to the pgd and below it. gcc doesn't actually
- * guarantee that global objects will be laid out in memory in the same order 
- * as the order of declaration, so put these in different sections and use
- * the linker script to order them. */
-pmd_t pmd0[PTRS_PER_PMD] __attribute__ ((__section__ (".data..vm0.pmd"), aligned(PAGE_SIZE)));
-#endif
-
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__ ((__section__ (".data..vm0.pgd"), aligned(PAGE_SIZE)));
-pte_t pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((__section__ (".data..vm0.pte"), aligned(PAGE_SIZE)));
-
-/*
- * Initial task structure.
- *
- * All other task structs will be allocated on slabs in fork.c
- */
-EXPORT_SYMBOL(init_task);
-
-__asm__(".data");
-struct task_struct init_task = INIT_TASK(init_task);
diff --git a/arch/parisc/kernel/pacache.S b/arch/parisc/kernel/pacache.S
index 93ff3d90edd1..5d7218ad885c 100644
--- a/arch/parisc/kernel/pacache.S
+++ b/arch/parisc/kernel/pacache.S
@@ -692,7 +692,7 @@ ENTRY(flush_icache_page_asm)
 
         /* Purge any old translation */
 
-        pitlb           (%sr0,%r28)
+        pitlb           (%sr4,%r28)
 
         ldil            L%icache_stride, %r1
         ldw             R%icache_stride(%r1), %r1
@@ -706,27 +706,29 @@ ENTRY(flush_icache_page_asm)
         sub             %r25, %r1, %r25
 
 
-1:      fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
-        fic,m           %r1(%r28)
+        /* fic only has the type 26 form on PA1.1, requiring an
+         * explicit space specification, so use %sr4 */
+1:      fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
+        fic,m           %r1(%sr4,%r28)
         cmpb,COND(<<)           %r28, %r25,1b
-        fic,m           %r1(%r28)
+        fic,m           %r1(%sr4,%r28)
 
         sync
         bv              %r0(%r2)
-        pitlb           (%sr0,%r25)
+        pitlb           (%sr4,%r25)
         .exit
 
         .procend
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 0bb1d63907f8..a47828d31fe6 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -31,6 +31,7 @@
 #include <linux/delay.h>
 #include <linux/bitops.h>
 #include <linux/ftrace.h>
+#include <linux/cpu.h>
 
 #include <linux/atomic.h>
 #include <asm/current.h>
@@ -295,8 +296,13 @@ smp_cpu_init(int cpunum)
 
                 printk(KERN_CRIT "CPU#%d already initialized!\n", cpunum);
                 machine_halt();
-        }  
+        }
+
+        notify_cpu_starting(cpunum);
+
+        ipi_call_lock();
         set_cpu_online(cpunum, true);
+        ipi_call_unlock();
 
         /* Initialise the idle task for this CPU */
         atomic_inc(&init_mm.mm_count);
@@ -334,26 +340,11 @@ void __init smp_callin(void)
 /*
  * Bring one cpu online.
  */
-int __cpuinit smp_boot_one_cpu(int cpuid)
+int __cpuinit smp_boot_one_cpu(int cpuid, struct task_struct *idle)
 {
         const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
-        struct task_struct *idle;
         long timeout;
 
-        /* 
-         * Create an idle task for this CPU.  Note the address wed* give 
-         * to kernel_thread is irrelevant -- it's going to start
-         * where OS_BOOT_RENDEVZ vector in SAL says to start.  But
-         * this gets all the other task-y sort of data structures set
-         * up like we wish.   We need to pull the just created idle task 
-         * off the run queue and stuff it into the init_tasks[] array.  
-         * Sheesh . . .
-         */
-
-        idle = fork_idle(cpuid);
-        if (IS_ERR(idle))
-                panic("SMP: fork failed for CPU:%d", cpuid);
-
         task_thread_info(idle)->cpu = cpuid;
 
         /* Let _start know what logical CPU we're booting
@@ -397,10 +388,6 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
                 udelay(100);
                 barrier();
         }
-
-        put_task_struct(idle);
-        idle = NULL;
-
         printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
         return -1;
 
@@ -449,10 +436,10 @@ void smp_cpus_done(unsigned int cpu_max)
 }
 
 
-int __cpuinit __cpu_up(unsigned int cpu)
+int __cpuinit __cpu_up(unsigned int cpu, struct task_struct *tidle)
 {
         if (cpu != 0 && cpu < parisc_max_cpus)
-                smp_boot_one_cpu(cpu);
+                smp_boot_one_cpu(cpu, tidle);
 
         return cpu_online(cpu) ? 0 : -ENOSYS;
 }
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 82f364e209fc..3ac462de53a4 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -33,6 +33,18 @@
 
 extern int  data_start;
 
+#if PT_NLEVELS == 3
+/* NOTE: This layout exactly conforms to the hybrid L2/L3 page table layout
+ * with the first pmd adjacent to the pgd and below it. gcc doesn't actually
+ * guarantee that global objects will be laid out in memory in the same order
+ * as the order of declaration, so put these in different sections and use
+ * the linker script to order them. */
+pmd_t pmd0[PTRS_PER_PMD] __attribute__ ((__section__ (".data..vm0.pmd"), aligned(PAGE_SIZE)));
+#endif
+
+pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__ ((__section__ (".data..vm0.pgd"), aligned(PAGE_SIZE)));
+pte_t pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((__section__ (".data..vm0.pte"), aligned(PAGE_SIZE)));
+
 #ifdef CONFIG_DISCONTIGMEM
 struct node_map_data node_data[MAX_NUMNODES] __read_mostly;
 unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly;