8 files changed, 29 insertions, 40 deletions

diff --git a/arch/ppc/4xx_io/serial_sicc.c b/arch/ppc/4xx_io/serial_sicc.c
index b81a367dc278..87fe9a89dba7 100644
--- a/arch/ppc/4xx_io/serial_sicc.c
+++ b/arch/ppc/4xx_io/serial_sicc.c
@@ -1720,7 +1720,7 @@ static int siccuart_open(struct tty_struct *tty, struct file *filp)
     return 0;
 }
 
-static struct tty_operations sicc_ops = {
+static const struct tty_operations sicc_ops = {
         .open = siccuart_open,
         .close = siccuart_close,
         .write = siccuart_write,
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 8fa10cf661a8..fdd9e7b66244 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -953,6 +953,9 @@ config NR_CPUS
 config HIGHMEM
         bool "High memory support"
 
+config ARCH_POPULATES_NODE_MAP
+        def_bool y
+
 source kernel/Kconfig.hz
 source kernel/Kconfig.preempt
 source "mm/Kconfig"
diff --git a/arch/ppc/kernel/misc.S b/arch/ppc/kernel/misc.S
index 50b4bbd06804..5f6684012ded 100644
--- a/arch/ppc/kernel/misc.S
+++ b/arch/ppc/kernel/misc.S
@@ -942,20 +942,16 @@ _GLOBAL(kernel_thread)
         addi    r1,r1,16
         blr
 
+_GLOBAL(kernel_execve)
+        li      r0,__NR_execve
+        sc
+        bnslr
+        neg     r3,r3
+        blr
+
 /*
  * This routine is just here to keep GCC happy - sigh...
  */
 _GLOBAL(__main)
         blr
 
-#define SYSCALL(name) \
-_GLOBAL(name) \
-        li      r0,__NR_##name; \
-        sc; \
-        bnslr; \
-        lis     r4,errno@ha; \
-        stw     r3,errno@l(r4); \
-        li      r3,-1; \
-        blr
-
-SYSCALL(execve)
diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
index 5458ac5da7c3..75fe13815be2 100644
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -86,10 +86,6 @@ int ppc_do_canonicalize_irqs;
 EXPORT_SYMBOL(ppc_do_canonicalize_irqs);
 #endif
 
-#ifdef CONFIG_MAGIC_SYSRQ
-unsigned long SYSRQ_KEY = 0x54;
-#endif /* CONFIG_MAGIC_SYSRQ */
-
 #ifdef CONFIG_VGA_CONSOLE
 unsigned long vgacon_remap_base;
 #endif
diff --git a/arch/ppc/kernel/time.c b/arch/ppc/kernel/time.c
index 6ab8cc7226ab..187388625a76 100644
--- a/arch/ppc/kernel/time.c
+++ b/arch/ppc/kernel/time.c
@@ -80,8 +80,6 @@ unsigned tb_to_us;
 unsigned tb_last_stamp;
 unsigned long tb_to_ns_scale;
 
-extern unsigned long wall_jiffies;
-
 /* used for timezone offset */
 static long timezone_offset;
 
@@ -153,7 +151,7 @@ void timer_interrupt(struct pt_regs * regs)
                 /* We are in an interrupt, no need to save/restore flags */
                 write_seqlock(&xtime_lock);
                 tb_last_stamp = jiffy_stamp;
-                do_timer(regs);
+                do_timer(1);
 
                 /*
                  * update the rtc when needed, this should be performed on the
@@ -173,8 +171,7 @@ void timer_interrupt(struct pt_regs * regs)
                  */
                 if ( ppc_md.set_rtc_time && ntp_synced() &&
                      xtime.tv_sec - last_rtc_update >= 659 &&
-                     abs((xtime.tv_nsec / 1000) - (1000000-1000000/HZ)) < 500000/HZ &&
-                     jiffies - wall_jiffies == 1) {
+                     abs((xtime.tv_nsec / 1000) - (1000000-1000000/HZ)) < 500000/HZ) {
                         if (ppc_md.set_rtc_time(xtime.tv_sec+1 + timezone_offset) == 0)
                                 last_rtc_update = xtime.tv_sec+1;
                         else
@@ -200,7 +197,7 @@ void do_gettimeofday(struct timeval *tv)
 {
         unsigned long flags;
         unsigned long seq;
-        unsigned delta, lost_ticks, usec, sec;
+        unsigned delta, usec, sec;
 
         do {
                 seq = read_seqbegin_irqsave(&xtime_lock, flags);
@@ -214,10 +211,9 @@ void do_gettimeofday(struct timeval *tv)
                 if (!smp_tb_synchronized)
                         delta = 0;
 #endif /* CONFIG_SMP */
-                lost_ticks = jiffies - wall_jiffies;
         } while (read_seqretry_irqrestore(&xtime_lock, seq, flags));
 
-        usec += mulhwu(tb_to_us, tb_ticks_per_jiffy * lost_ticks + delta);
+        usec += mulhwu(tb_to_us, delta);
         while (usec >= 1000000) {
                 sec++;
                 usec -= 1000000;
@@ -258,7 +254,6 @@ int do_settimeofday(struct timespec *tv)
          * still reasonable when gettimeofday resolution is 1 jiffy.
          */
         tb_delta = tb_ticks_since(last_jiffy_stamp(smp_processor_id()));
-        tb_delta += (jiffies - wall_jiffies) * tb_ticks_per_jiffy;
 
         new_nsec -= 1000 * mulhwu(tb_to_us, tb_delta);
 
diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c
index d7a433049b48..aafc8e8893d1 100644
--- a/arch/ppc/kernel/traps.c
+++ b/arch/ppc/kernel/traps.c
@@ -119,7 +119,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
          * generate the same exception over and over again and we get
          * nowhere.  Better to kill it and let the kernel panic.
          */
-        if (current->pid == 1) {
+        if (is_init(current)) {
                 __sighandler_t handler;
 
                 spin_lock_irq(&current->sighand->siglock);
diff --git a/arch/ppc/mm/fault.c b/arch/ppc/mm/fault.c
index 5cdfb71fcb07..465f451f3bc3 100644
--- a/arch/ppc/mm/fault.c
+++ b/arch/ppc/mm/fault.c
@@ -239,7 +239,7 @@ good_area:
                 /* protection fault */
                 if (error_code & 0x08000000)
                         goto bad_area;
-                if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
+                if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))
                         goto bad_area;
         }
 
@@ -291,7 +291,7 @@ bad_area:
  */
 out_of_memory:
         up_read(&mm->mmap_sem);
-        if (current->pid == 1) {
+        if (is_init(current)) {
                 yield();
                 down_read(&mm->mmap_sem);
                 goto survive;
diff --git a/arch/ppc/mm/init.c b/arch/ppc/mm/init.c
index 523392d460fa..410200046af1 100644
--- a/arch/ppc/mm/init.c
+++ b/arch/ppc/mm/init.c
@@ -358,8 +358,8 @@ void __init do_init_bootmem(void)
  */
 void __init paging_init(void)
 {
-        unsigned long zones_size[MAX_NR_ZONES], i;
-
+        unsigned long start_pfn, end_pfn;
+        unsigned long max_zone_pfns[MAX_NR_ZONES];
 #ifdef CONFIG_HIGHMEM
         map_page(PKMAP_BASE, 0, 0);     /* XXX gross */
         pkmap_page_table = pte_offset_kernel(pmd_offset(pgd_offset_k
@@ -369,19 +369,18 @@ void __init paging_init(void)
                         (KMAP_FIX_BEGIN), KMAP_FIX_BEGIN), KMAP_FIX_BEGIN);
         kmap_prot = PAGE_KERNEL;
 #endif /* CONFIG_HIGHMEM */
-
-        /*
-         * All pages are DMA-able so we put them all in the DMA zone.
-         */
-        zones_size[ZONE_DMA] = total_lowmem >> PAGE_SHIFT;
-        for (i = 1; i < MAX_NR_ZONES; i++)
-                zones_size[i] = 0;
+        /* All pages are DMA-able so we put them all in the DMA zone. */
+        start_pfn = __pa(PAGE_OFFSET) >> PAGE_SHIFT;
+        end_pfn = start_pfn + (total_memory >> PAGE_SHIFT);
+        add_active_range(0, start_pfn, end_pfn);
 
 #ifdef CONFIG_HIGHMEM
-        zones_size[ZONE_HIGHMEM] = (total_memory - total_lowmem) >> PAGE_SHIFT;
+        max_zone_pfns[0] = total_lowmem >> PAGE_SHIFT;
+        max_zone_pfns[1] = total_memory >> PAGE_SHIFT;
+#else
+        max_zone_pfns[0] = total_memory >> PAGE_SHIFT;
 #endif /* CONFIG_HIGHMEM */
-
-        free_area_init(zones_size);
+        free_area_init_nodes(max_zone_pfns);
 }
 
 void __init mem_init(void)