@@ -1131,15 +1131,6 @@ void __kprobes program_check_exception(struct pt_regs *regs)
* instruction or only on FP instructions, whether there is a
* pattern to occurrences etc. -dgibson 31/Mar/2003
*/
-
- /*
- * If we support a HW FPU, we need to ensure the FP state
- * if flushed into the thread_struct before attempting
- * emulation
- */
-#ifdef CONFIG_PPC_FPU
- flush_fp_to_thread(current);
-#endif
switch (do_mathemu(regs)) {
case 0:
emulate_single_step(regs);
@@ -420,6 +420,15 @@ do_mathemu(struct pt_regs *regs)
goto illegal;
}
+ /*
+ * If we support a HW FPU, we need to ensure the FP state
+ * is flushed into the thread_struct before attempting
+ * emulation
+ */
+#ifdef CONFIG_PPC_FPU
+ flush_fp_to_thread(current);
+#endif
+
eflag = func(op0, op1, op2, op3);
if (insn & 1) {
By doing this we can make sure that the FPU state is only flushed to the thread struct when it is really needed. Signed-off-by: Kevin Hao <haokexin@gmail.com> --- v3: Fix the typo in the comments. arch/powerpc/kernel/traps.c | 9 --------- arch/powerpc/math-emu/math.c | 9 +++++++++ 2 files changed, 9 insertions(+), 9 deletions(-)