10 files changed, 103 insertions, 5 deletions

diff --git a/include/asm-powerpc/pgtable-4k.h b/include/asm-powerpc/pgtable-4k.h
index c9601dfb4a1e..6b18ba9d2d85 100644
--- a/include/asm-powerpc/pgtable-4k.h
+++ b/include/asm-powerpc/pgtable-4k.h
@@ -46,6 +46,8 @@
 #define _PAGE_GROUP_IX  0x7000 /* software: HPTE index within group */
 #define _PAGE_F_SECOND  _PAGE_SECONDARY
 #define _PAGE_F_GIX     _PAGE_GROUP_IX
+#define _PAGE_SPECIAL   0x10000 /* software: special page */
+#define __HAVE_ARCH_PTE_SPECIAL
 
 /* PTE flags to conserve for HPTE identification */
 #define _PAGE_HPTEFLAGS (_PAGE_BUSY | _PAGE_HASHPTE | \
diff --git a/include/asm-powerpc/pgtable-64k.h b/include/asm-powerpc/pgtable-64k.h
index 7e54adb35596..07b0d8f09cb6 100644
--- a/include/asm-powerpc/pgtable-64k.h
+++ b/include/asm-powerpc/pgtable-64k.h
@@ -70,6 +70,8 @@ static inline struct subpage_prot_table *pgd_subpage_prot(pgd_t *pgd)
 #define PGDIR_MASK      (~(PGDIR_SIZE-1))
 
 /* Additional PTE bits (don't change without checking asm in hash_low.S) */
+#define __HAVE_ARCH_PTE_SPECIAL
+#define _PAGE_SPECIAL   0x00000400 /* software: special page */
 #define _PAGE_HPTE_SUB  0x0ffff000 /* combo only: sub pages HPTE bits */
 #define _PAGE_HPTE_SUB0 0x08000000 /* combo only: first sub page */
 #define _PAGE_COMBO     0x10000000 /* this is a combo 4k page */
diff --git a/include/asm-powerpc/pgtable-ppc32.h b/include/asm-powerpc/pgtable-ppc32.h
index bdbab72f3ebc..6fe39e327047 100644
--- a/include/asm-powerpc/pgtable-ppc32.h
+++ b/include/asm-powerpc/pgtable-ppc32.h
@@ -401,6 +401,9 @@ extern int icache_44x_need_flush;
 #ifndef _PAGE_COHERENT
 #define _PAGE_COHERENT  0
 #endif
+#ifndef _PAGE_WRITETHRU
+#define _PAGE_WRITETHRU 0
+#endif
 #ifndef _PMD_PRESENT_MASK
 #define _PMD_PRESENT_MASK       _PMD_PRESENT
 #endif
diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h
index ba8000352b9a..5fc78c0be302 100644
--- a/include/asm-powerpc/pgtable-ppc64.h
+++ b/include/asm-powerpc/pgtable-ppc64.h
@@ -245,7 +245,7 @@ static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW;}
 static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY;}
 static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED;}
 static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE;}
-static inline int pte_special(pte_t pte) { return 0; }
+static inline int pte_special(pte_t pte) { return pte_val(pte) & _PAGE_SPECIAL; }
 
 static inline void pte_uncache(pte_t pte) { pte_val(pte) |= _PAGE_NO_CACHE; }
 static inline void pte_cache(pte_t pte)   { pte_val(pte) &= ~_PAGE_NO_CACHE; }
@@ -265,7 +265,7 @@ static inline pte_t pte_mkyoung(pte_t pte) {
 static inline pte_t pte_mkhuge(pte_t pte) {
         return pte; }
 static inline pte_t pte_mkspecial(pte_t pte) {
-        return pte; }
+        pte_val(pte) |= _PAGE_SPECIAL; return pte; }
 static inline unsigned long pte_pgprot(pte_t pte)
 {
         return __pgprot(pte_val(pte)) & PAGE_PROT_BITS;
diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h
index 3d6e31024e56..734e0754fb9b 100644
--- a/include/asm-powerpc/ptrace.h
+++ b/include/asm-powerpc/ptrace.h
@@ -84,6 +84,7 @@ struct pt_regs {
 #ifndef __ASSEMBLY__
 
 #define instruction_pointer(regs) ((regs)->nip)
+#define user_stack_pointer(regs) ((regs)->gpr[1])
 #define regs_return_value(regs) ((regs)->gpr[3])
 
 #ifdef CONFIG_SMP
diff --git a/include/asm-powerpc/signal.h b/include/asm-powerpc/signal.h
index a8c7babf4950..a7360cdd99eb 100644
--- a/include/asm-powerpc/signal.h
+++ b/include/asm-powerpc/signal.h
@@ -122,8 +122,7 @@ typedef struct sigaltstack {
 
 #ifdef __KERNEL__
 struct pt_regs;
-extern int do_signal(sigset_t *oldset, struct pt_regs *regs);
-extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
+extern void do_signal(struct pt_regs *regs, unsigned long thread_info_flags);
 #define ptrace_signal_deliver(regs, cookie) do { } while (0)
 #endif /* __KERNEL__ */
 
diff --git a/include/asm-powerpc/smp.h b/include/asm-powerpc/smp.h
index 416d4c288cea..4d28e1e4521b 100644
--- a/include/asm-powerpc/smp.h
+++ b/include/asm-powerpc/smp.h
@@ -62,6 +62,8 @@ extern int smp_hw_index[];
 #endif
 
 DECLARE_PER_CPU(cpumask_t, cpu_sibling_map);
+DECLARE_PER_CPU(cpumask_t, cpu_core_map);
+extern int cpu_to_core_id(int cpu);
 
 /* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
  *
diff --git a/include/asm-powerpc/syscall.h b/include/asm-powerpc/syscall.h
new file mode 100644
index 000000000000..efa7f0b879f3
--- /dev/null
+++ b/include/asm-powerpc/syscall.h
@@ -0,0 +1,84 @@
+/*
+ * Access to user system call parameters and results
+ *
+ * Copyright (C) 2008 Red Hat, Inc.  All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * See asm-generic/syscall.h for descriptions of what we must do here.
+ */
+
+#ifndef _ASM_SYSCALL_H
+#define _ASM_SYSCALL_H  1
+
+#include <linux/sched.h>
+
+static inline long syscall_get_nr(struct task_struct *task,
+                                  struct pt_regs *regs)
+{
+        return TRAP(regs) == 0xc00 ? regs->gpr[0] : -1L;
+}
+
+static inline void syscall_rollback(struct task_struct *task,
+                                    struct pt_regs *regs)
+{
+        regs->gpr[3] = regs->orig_gpr3;
+}
+
+static inline long syscall_get_error(struct task_struct *task,
+                                     struct pt_regs *regs)
+{
+        return (regs->ccr & 0x1000) ? -regs->gpr[3] : 0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+                                            struct pt_regs *regs)
+{
+        return regs->gpr[3];
+}
+
+static inline void syscall_set_return_value(struct task_struct *task,
+                                            struct pt_regs *regs,
+                                            int error, long val)
+{
+        if (error) {
+                regs->ccr |= 0x1000L;
+                regs->gpr[3] = -error;
+        } else {
+                regs->ccr &= ~0x1000L;
+                regs->gpr[3] = val;
+        }
+}
+
+static inline void syscall_get_arguments(struct task_struct *task,
+                                         struct pt_regs *regs,
+                                         unsigned int i, unsigned int n,
+                                         unsigned long *args)
+{
+        BUG_ON(i + n > 6);
+#ifdef CONFIG_PPC64
+        if (test_tsk_thread_flag(task, TIF_32BIT)) {
+                /*
+                 * Zero-extend 32-bit argument values.  The high bits are
+                 * garbage ignored by the actual syscall dispatch.
+                 */
+                while (n-- > 0)
+                        args[n] = (u32) regs->gpr[3 + i + n];
+                return;
+        }
+#endif
+        memcpy(args, &regs->gpr[3 + i], n * sizeof(args[0]));
+}
+
+static inline void syscall_set_arguments(struct task_struct *task,
+                                         struct pt_regs *regs,
+                                         unsigned int i, unsigned int n,
+                                         const unsigned long *args)
+{
+        BUG_ON(i + n > 6);
+        memcpy(&regs->gpr[3 + i], args, n * sizeof(args[0]));
+}
+
+#endif  /* _ASM_SYSCALL_H */
diff --git a/include/asm-powerpc/thread_info.h b/include/asm-powerpc/thread_info.h
index a9db562df69a..9665a26a253a 100644
--- a/include/asm-powerpc/thread_info.h
+++ b/include/asm-powerpc/thread_info.h
@@ -108,6 +108,7 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SECCOMP             10      /* secure computing */
 #define TIF_RESTOREALL          11      /* Restore all regs (implies NOERROR) */
 #define TIF_NOERROR             12      /* Force successful syscall return */
+#define TIF_NOTIFY_RESUME       13      /* callback before returning to user */
 #define TIF_FREEZE              14      /* Freezing for suspend */
 #define TIF_RUNLATCH            15      /* Is the runlatch enabled? */
 #define TIF_ABI_PENDING         16      /* 32/64 bit switch needed */
@@ -125,12 +126,14 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SECCOMP            (1<<TIF_SECCOMP)
 #define _TIF_RESTOREALL         (1<<TIF_RESTOREALL)
 #define _TIF_NOERROR            (1<<TIF_NOERROR)
+#define _TIF_NOTIFY_RESUME      (1<<TIF_NOTIFY_RESUME)
 #define _TIF_FREEZE             (1<<TIF_FREEZE)
 #define _TIF_RUNLATCH           (1<<TIF_RUNLATCH)
 #define _TIF_ABI_PENDING        (1<<TIF_ABI_PENDING)
 #define _TIF_SYSCALL_T_OR_A     (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
 
-#define _TIF_USER_WORK_MASK     (_TIF_SIGPENDING | _TIF_NEED_RESCHED)
+#define _TIF_USER_WORK_MASK     (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
+                                 _TIF_NOTIFY_RESUME)
 #define _TIF_PERSYSCALL_MASK    (_TIF_RESTOREALL|_TIF_NOERROR)
 
 /* Bits in local_flags */
diff --git a/include/asm-powerpc/topology.h b/include/asm-powerpc/topology.h
index 100c6fbfc587..c32da6f97999 100644
--- a/include/asm-powerpc/topology.h
+++ b/include/asm-powerpc/topology.h
@@ -108,6 +108,8 @@ static inline void sysfs_remove_device_from_node(struct sys_device *dev,
 #include <asm/smp.h>
 
 #define topology_thread_siblings(cpu)   (per_cpu(cpu_sibling_map, cpu))
+#define topology_core_siblings(cpu)     (per_cpu(cpu_core_map, cpu))
+#define topology_core_id(cpu)           (cpu_to_core_id(cpu))
 #endif
 #endif