x86: fix math_emu register frame access
[linux-2.6.git] / arch / x86 / kernel / traps.c
index 98c2d05..7932338 100644 (file)
@@ -896,7 +896,7 @@ asmlinkage void math_state_restore(void)
 EXPORT_SYMBOL_GPL(math_state_restore);
 
 #ifndef CONFIG_MATH_EMULATION
-asmlinkage void math_emulate(long arg)
+void math_emulate(struct math_emu_info *info)
 {
        printk(KERN_EMERG
                "math-emulation not enabled and no coprocessor found.\n");
@@ -906,16 +906,19 @@ asmlinkage void math_emulate(long arg)
 }
 #endif /* CONFIG_MATH_EMULATION */
 
-dotraplinkage void __kprobes
-do_device_not_available(struct pt_regs *regs, long error)
+dotraplinkage void __kprobes do_device_not_available(struct pt_regs regs)
 {
 #ifdef CONFIG_X86_32
        if (read_cr0() & X86_CR0_EM) {
-               conditional_sti(regs);
-               math_emulate(0);
+               struct math_emu_info info = { };
+
+               conditional_sti(&regs);
+
+               info.regs = &regs;
+               math_emulate(&info);
        } else {
                math_state_restore(); /* interrupts still off */
-               conditional_sti(regs);
+               conditional_sti(&regs);
        }
 #else
        math_state_restore();