Merge master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc

* master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: (61 commits)
  [POWERPC] Use udbg_early_init() on ppc32
  [POWERPC] Open Firmware serial port driver
  [POWERPC] Move MPIC smp routines into mpic.c
  [POWERPC] Cleanup pseries kexec code
  [POWERPC] Cleanup pseries smp initialisation code
  [POWERPC] Consolidate pseries platform header files into pseries.h
  [POWERPC] 85xx: Drop use of SYNC macro in head_fsl_booke.S
  [POWERPC] cell: pm_rtas_activat_signals routine cleanup
  [POWERPC] cell: PPU Oprofile cleanup patch
  [POWERPC] spufs: avoid accessing kernel memory through mmapped /mem node
  [POWERPC] spu sched: static timeslicing for SCHED_RR contexts
  [POWERPC] spu sched: use DECLARE_BITMAP
  [POWERPC] spu sched: forced preemption at execution
  [POWERPC] spu sched: update some comments
  [POWERPC] spu sched: simplity spu_remove_from_active_list
  [POWERPC] spufs: optimize spu_run
  [POWERPC] spufs: runqueue simplification
  [POWERPC] spufs: move prio to spu_context
  [POWERPC] spufs: state_mutex cleanup
  [POWERPC] spufs: simplify state_mutex
  ...

1 files changed, 23 insertions, 11 deletions

diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index 50149ec6efa..e46c31b3664 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -49,24 +49,23 @@
 /* Max supported size for symbol names */
 #define MAX_SYMNAME	64
 
-#define VDSO32_MAXPAGES	(((0x3000 + PAGE_MASK) >> PAGE_SHIFT) + 2)
-#define VDSO64_MAXPAGES	(((0x3000 + PAGE_MASK) >> PAGE_SHIFT) + 2)
-
 extern char vdso32_start, vdso32_end;
 static void *vdso32_kbase = &vdso32_start;
-unsigned int vdso32_pages;
-static struct page *vdso32_pagelist[VDSO32_MAXPAGES];
+static unsigned int vdso32_pages;
+static struct page **vdso32_pagelist;
 unsigned long vdso32_sigtramp;
 unsigned long vdso32_rt_sigtramp;
 
 #ifdef CONFIG_PPC64
 extern char vdso64_start, vdso64_end;
 static void *vdso64_kbase = &vdso64_start;
-unsigned int vdso64_pages;
-static struct page *vdso64_pagelist[VDSO64_MAXPAGES];
+static unsigned int vdso64_pages;
+static struct page **vdso64_pagelist;
 unsigned long vdso64_rt_sigtramp;
 #endif /* CONFIG_PPC64 */
 
+static int vdso_ready;
+
 /*
  * The vdso data page (aka. systemcfg for old ppc64 fans) is here.
  * Once the early boot kernel code no longer needs to muck around
@@ -182,6 +181,9 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
 	unsigned long vdso_base;
 	int rc;
 
+	if (!vdso_ready)
+		return 0;
+
 #ifdef CONFIG_PPC64
 	if (test_thread_flag(TIF_32BIT)) {
 		vdso_pagelist = vdso32_pagelist;
@@ -661,7 +663,7 @@ static void __init vdso_setup_syscall_map(void)
 }
 
 
-void __init vdso_init(void)
+static int __init vdso_init(void)
 {
 	int i;
 
@@ -716,11 +718,13 @@ void __init vdso_init(void)
 #ifdef CONFIG_PPC64
 		vdso64_pages = 0;
 #endif
-		return;
+		return 0;
 	}
 
 	/* Make sure pages are in the correct state */
-	BUG_ON(vdso32_pages + 2 > VDSO32_MAXPAGES);
+	vdso32_pagelist = kzalloc(sizeof(struct page *) * (vdso32_pages + 2),
+				  GFP_KERNEL);
+	BUG_ON(vdso32_pagelist == NULL);
 	for (i = 0; i < vdso32_pages; i++) {
 		struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE);
 		ClearPageReserved(pg);
@@ -731,7 +735,9 @@ void __init vdso_init(void)
 	vdso32_pagelist[i] = NULL;
 
 #ifdef CONFIG_PPC64
-	BUG_ON(vdso64_pages + 2 > VDSO64_MAXPAGES);
+	vdso64_pagelist = kzalloc(sizeof(struct page *) * (vdso64_pages + 2),
+				  GFP_KERNEL);
+	BUG_ON(vdso64_pagelist == NULL);
 	for (i = 0; i < vdso64_pages; i++) {
 		struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE);
 		ClearPageReserved(pg);
@@ -743,7 +749,13 @@ void __init vdso_init(void)
 #endif /* CONFIG_PPC64 */
 
 	get_page(virt_to_page(vdso_data));
+
+	smp_wmb();
+	vdso_ready = 1;
+
+	return 0;
 }
+arch_initcall(vdso_init);
 
 int in_gate_area_no_task(unsigned long addr)
 {