[PATCH] x86-64: Use probe_kernel_address in arch/x86_64/*

Instead of open coded __get_user

Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 5 insertions, 5 deletions

diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index 3751b4788e28..a65fc6f1dcaf 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -23,9 +23,9 @@
 #include <linux/compiler.h>
 #include <linux/module.h>
 #include <linux/kprobes.h>
+#include <linux/uaccess.h>
 
 #include <asm/system.h>
-#include <asm/uaccess.h>
 #include <asm/pgalloc.h>
 #include <asm/smp.h>
 #include <asm/tlbflush.h>
@@ -96,7 +96,7 @@ void bust_spinlocks(int yes)
 static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
                                 unsigned long error_code)
 { 
-        unsigned char __user *instr;
+        unsigned char *instr;
         int scan_more = 1;
         int prefetch = 0; 
         unsigned char *max_instr;
@@ -116,7 +116,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
                 unsigned char instr_hi;
                 unsigned char instr_lo;
 
-                if (__get_user(opcode, (char __user *)instr))
+                if (probe_kernel_address(instr, opcode))
                         break; 
 
                 instr_hi = opcode & 0xf0; 
@@ -154,7 +154,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
                 case 0x00:
                         /* Prefetch instruction is 0x0F0D or 0x0F18 */
                         scan_more = 0;
-                        if (__get_user(opcode, (char __user *)instr))
+                        if (probe_kernel_address(instr, opcode))
                                 break;
                         prefetch = (instr_lo == 0xF) &&
                                 (opcode == 0x0D || opcode == 0x18);
@@ -170,7 +170,7 @@ static noinline int is_prefetch(struct pt_regs *regs, unsigned long addr,
 static int bad_address(void *p) 
 { 
         unsigned long dummy;
-        return __get_user(dummy, (unsigned long __user *)p);
+        return probe_kernel_address((unsigned long *)p, dummy);
 } 
 
 void dump_pagetable(unsigned long address)