1 files changed, 18 insertions, 2 deletions

diff --git a/arch/sparc64/kernel/ptrace.c b/arch/sparc64/kernel/ptrace.c
index 9a1ba1fe859d..aaae865e7932 100644
--- a/arch/sparc64/kernel/ptrace.c
+++ b/arch/sparc64/kernel/ptrace.c
@@ -35,6 +35,9 @@
 #include <asm/spitfire.h>
 #include <asm/page.h>
 #include <asm/cpudata.h>
+#include <asm/cacheflush.h>
+
+#include "entry.h"
 
 /* #define ALLOW_INIT_TRACING */
 
@@ -67,6 +70,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
         if (tlb_type == hypervisor)
                 return;
 
+        preempt_disable();
+
 #ifdef DCACHE_ALIASING_POSSIBLE
         /* If bit 13 of the kernel address we used to access the
          * user page is the same as the virtual address that page
@@ -105,6 +110,8 @@ void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
                 for (; start < end; start += icache_line_size)
                         flushi(start);
         }
+
+        preempt_enable();
 }
 
 enum sparc_regset {
@@ -382,6 +389,7 @@ static const struct user_regset_view user_sparc64_view = {
         .regsets = sparc64_regsets, .n = ARRAY_SIZE(sparc64_regsets)
 };
 
+#ifdef CONFIG_COMPAT
 static int genregs32_get(struct task_struct *target,
                          const struct user_regset *regset,
                          unsigned int pos, unsigned int count,
@@ -676,14 +684,18 @@ static const struct user_regset_view user_sparc32_view = {
         .name = "sparc", .e_machine = EM_SPARC,
         .regsets = sparc32_regsets, .n = ARRAY_SIZE(sparc32_regsets)
 };
+#endif /* CONFIG_COMPAT */
 
 const struct user_regset_view *task_user_regset_view(struct task_struct *task)
 {
+#ifdef CONFIG_COMPAT
         if (test_tsk_thread_flag(task, TIF_32BIT))
                 return &user_sparc32_view;
+#endif
         return &user_sparc64_view;
 }
 
+#ifdef CONFIG_COMPAT
 struct compat_fps {
         unsigned int regs[32];
         unsigned int fsr;
@@ -798,6 +810,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 
         return ret;
 }
+#endif /* CONFIG_COMPAT */
 
 struct fps {
         unsigned int regs[64];
@@ -807,11 +820,14 @@ struct fps {
 long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 {
         const struct user_regset_view *view = task_user_regset_view(child);
-        struct pt_regs __user *pregs = (struct pt_regs __user *) addr;
         unsigned long addr2 = task_pt_regs(current)->u_regs[UREG_I4];
-        struct fps __user *fps = (struct fps __user *) addr;
+        struct pt_regs __user *pregs;
+        struct fps __user *fps;
         int ret;
 
+        pregs = (struct pt_regs __user *) (unsigned long) addr;
+        fps = (struct fps __user *) (unsigned long) addr;
+
         switch (request) {
         case PTRACE_PEEKUSR:
                 ret = (addr != 0) ? -EIO : 0;