10 files changed, 46 insertions, 58 deletions

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 98f67c78d1bd..a13eb575f834 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -61,15 +61,17 @@ endif
 LDFLAGS_vmlinux := -Bstatic
 
 # The -Iarch/$(ARCH)/include is temporary while we are merging
-CPPFLAGS        += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
-AFLAGS          += -Iarch/$(ARCH)
-CFLAGS          += -Iarch/$(ARCH) -msoft-float -pipe
+CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
+AFLAGS-$(CONFIG_PPC32)  := -Iarch/$(ARCH)
 CFLAGS-$(CONFIG_PPC64)  := -mminimal-toc -mtraceback=none  -mcall-aixdesc
-CFLAGS-$(CONFIG_PPC32)  := -ffixed-r2 -mmultiple
-CFLAGS          += $(CFLAGS-y)
+CFLAGS-$(CONFIG_PPC32)  := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
+CPPFLAGS        += $(CPPFLAGS-y)
+AFLAGS          += $(AFLAGS-y)
+CFLAGS          += -msoft-float -pipe $(CFLAGS-y)
 CPP             = $(CC) -E $(CFLAGS)
 # Temporary hack until we have migrated to asm-powerpc
-LINUXINCLUDE    += -Iarch/$(ARCH)/include
+LINUXINCLUDE-$(CONFIG_PPC32)    := -Iarch/$(ARCH)/include
+LINUXINCLUDE    += $(LINUXINCLUDE-y)
 
 CHECKFLAGS      += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
 
@@ -173,11 +175,13 @@ archclean:
 
 archprepare: checkbin
 
+ifeq ($(CONFIG_PPC32),y)
 # Temporary hack until we have migrated to asm-powerpc
 include/asm: arch/$(ARCH)/include/asm
 arch/$(ARCH)/include/asm: FORCE
         $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
         $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
+endif
 
 # Use the file '.tmp_gas_check' for binutils tests, as gas won't output
 # to stdout and these checks are run even on install targets.
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index af4d1bc9a2eb..94db25708456 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -163,15 +163,13 @@ EXPORT_SYMBOL(giveup_altivec);
 EXPORT_SYMBOL(giveup_spe);
 #endif /* CONFIG_SPE */
 
-#ifdef CONFIG_PPC64
-EXPORT_SYMBOL(__flush_icache_range);
-#else
+#ifndef CONFIG_PPC64
 EXPORT_SYMBOL(flush_instruction_cache);
-EXPORT_SYMBOL(flush_icache_range);
 EXPORT_SYMBOL(flush_tlb_kernel_range);
 EXPORT_SYMBOL(flush_tlb_page);
 EXPORT_SYMBOL(_tlbie);
 #endif
+EXPORT_SYMBOL(__flush_icache_range);
 EXPORT_SYMBOL(flush_dcache_range);
 
 #ifdef CONFIG_SMP
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index a5a7542a8ff3..105d5609ff57 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -201,6 +201,28 @@ int dump_spe(struct pt_regs *regs, elf_vrregset_t *evrregs)
 }
 #endif /* CONFIG_SPE */
 
+/*
+ * If we are doing lazy switching of CPU state (FP, altivec or SPE),
+ * and the current task has some state, discard it.
+ */
+static inline void discard_lazy_cpu_state(void)
+{
+#ifndef CONFIG_SMP
+        preempt_disable();
+        if (last_task_used_math == current)
+                last_task_used_math = NULL;
+#ifdef CONFIG_ALTIVEC
+        if (last_task_used_altivec == current)
+                last_task_used_altivec = NULL;
+#endif /* CONFIG_ALTIVEC */
+#ifdef CONFIG_SPE
+        if (last_task_used_spe == current)
+                last_task_used_spe = NULL;
+#endif
+        preempt_enable();
+#endif /* CONFIG_SMP */
+}
+
 int set_dabr(unsigned long dabr)
 {
         if (ppc_md.set_dabr)
@@ -434,19 +456,7 @@ void show_regs(struct pt_regs * regs)
 void exit_thread(void)
 {
         kprobe_flush_task(current);
-
-#ifndef CONFIG_SMP
-        if (last_task_used_math == current)
-                last_task_used_math = NULL;
-#ifdef CONFIG_ALTIVEC
-        if (last_task_used_altivec == current)
-                last_task_used_altivec = NULL;
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-        if (last_task_used_spe == current)
-                last_task_used_spe = NULL;
-#endif
-#endif /* CONFIG_SMP */
+        discard_lazy_cpu_state();
 }
 
 void flush_thread(void)
@@ -458,18 +468,7 @@ void flush_thread(void)
                 t->flags ^= (_TIF_ABI_PENDING | _TIF_32BIT);
 #endif
 
-#ifndef CONFIG_SMP
-        if (last_task_used_math == current)
-                last_task_used_math = NULL;
-#ifdef CONFIG_ALTIVEC
-        if (last_task_used_altivec == current)
-                last_task_used_altivec = NULL;
-#endif /* CONFIG_ALTIVEC */
-#ifdef CONFIG_SPE
-        if (last_task_used_spe == current)
-                last_task_used_spe = NULL;
-#endif
-#endif /* CONFIG_SMP */
+        discard_lazy_cpu_state();
 
 #ifdef CONFIG_PPC64     /* for now */
         if (current->thread.dabr) {
@@ -635,18 +634,7 @@ void start_thread(struct pt_regs *regs, unsigned long start, unsigned long sp)
         }
 #endif
 
-#ifndef CONFIG_SMP
-        if (last_task_used_math == current)
-                last_task_used_math = NULL;
-#ifdef CONFIG_ALTIVEC
-        if (last_task_used_altivec == current)
-                last_task_used_altivec = NULL;
-#endif
-#ifdef CONFIG_SPE
-        if (last_task_used_spe == current)
-                last_task_used_spe = NULL;
-#endif
-#endif /* CONFIG_SMP */
+        discard_lazy_cpu_state();
         memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
         current->thread.fpscr.val = 0;
 #ifdef CONFIG_ALTIVEC
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 4ce0105c308e..bcdc209dca85 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -265,7 +265,7 @@ static int __init call_prom_ret(const char *service, int nargs, int nret,
         va_end(list);
 
         for (i = 0; i < nret; i++)
-                rets[nargs+i] = 0;
+                args.args[nargs+i] = 0;
 
         if (enter_prom(&args, RELOC(prom_entry)) < 0)
                 return PROM_ERROR;
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index b44b36e0c293..f0c47dab0903 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -145,8 +145,7 @@ static void dump_vdso_pages(struct vm_area_struct * vma)
                         struct page *pg = virt_to_page(vdso32_kbase +
                                                        i*PAGE_SIZE);
                         struct page *upg = (vma && vma->vm_mm) ?
-                                follow_page(vma->vm_mm, vma->vm_start +
-                                            i*PAGE_SIZE, 0)
+                                follow_page(vma, vma->vm_start + i*PAGE_SIZE, 0)
                                 : NULL;
                         dump_one_vdso_page(pg, upg);
                 }
@@ -157,8 +156,7 @@ static void dump_vdso_pages(struct vm_area_struct * vma)
                         struct page *pg = virt_to_page(vdso64_kbase +
                                                        i*PAGE_SIZE);
                         struct page *upg = (vma && vma->vm_mm) ?
-                                follow_page(vma->vm_mm, vma->vm_start +
-                                            i*PAGE_SIZE, 0)
+                                follow_page(vma, vma->vm_start + i*PAGE_SIZE, 0)
                                 : NULL;
                         dump_one_vdso_page(pg, upg);
                 }
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index f867bba893ca..6bc9dbad7dea 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -295,7 +295,7 @@ int prepare_hugepage_range(unsigned long addr, unsigned long len)
         if (addr < 0x100000000UL)
                 err = open_low_hpage_areas(current->mm,
                                           LOW_ESID_MASK(addr, len));
-        if ((addr + len) >= 0x100000000UL)
+        if ((addr + len) > 0x100000000UL)
                 err = open_high_hpage_areas(current->mm,
                                             HTLB_AREA_MASK(addr, len));
         if (err) {
diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c
index bf081b345820..2b54eeb2c899 100644
--- a/arch/powerpc/platforms/iseries/iommu.c
+++ b/arch/powerpc/platforms/iseries/iommu.c
@@ -3,7 +3,7 @@
  *
  * Rewrite, cleanup:
  *
- * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
  *
  * Dynamic DMA mapping support, iSeries-specific parts.
  *
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c
index 97ba5214417f..c78f2b290a73 100644
--- a/arch/powerpc/platforms/pseries/iommu.c
+++ b/arch/powerpc/platforms/pseries/iommu.c
@@ -5,7 +5,7 @@
  *
  * Rewrite, cleanup: 
  *
- * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
  *
  * Dynamic DMA mapping support, pSeries-specific parts, both SMP and LPAR.
  *
diff --git a/arch/powerpc/sysdev/dart.h b/arch/powerpc/sysdev/dart.h
index ea8f0d9eed8a..33ed9ed7fc1e 100644
--- a/arch/powerpc/sysdev/dart.h
+++ b/arch/powerpc/sysdev/dart.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, 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
diff --git a/arch/powerpc/sysdev/u3_iommu.c b/arch/powerpc/sysdev/u3_iommu.c
index f32baf7f4693..5c1a26a6d00c 100644
--- a/arch/powerpc/sysdev/u3_iommu.c
+++ b/arch/powerpc/sysdev/u3_iommu.c
@@ -1,11 +1,11 @@
 /*
  * arch/powerpc/sysdev/u3_iommu.c
  *
- * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
  *
  * Based on pSeries_iommu.c:
  * Copyright (C) 2001 Mike Corrigan & Dave Engebretsen, IBM Corporation
- * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
+ * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, IBM Corporation
  *
  * Dynamic DMA mapping support, Apple U3 & IBM CPC925 "DART" iommu.
  *