[PATCH] x86_64: Clean up execve

Just call IRET always, no need for any special cases.

Needed for the next bug fix.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index 7c10e90..25dcb77 100644 (file)
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -408,25 +408,9 @@ ENTRY(stub_execve)
        CFI_ADJUST_CFA_OFFSET -8
        CFI_REGISTER rip, r11
        SAVE_REST
-       movq %r11, %r15
-       CFI_REGISTER rip, r15
        FIXUP_TOP_OF_STACK %r11
        call sys_execve
-       GET_THREAD_INFO(%rcx)
-       bt $TIF_IA32,threadinfo_flags(%rcx)
-       CFI_REMEMBER_STATE
-       jc exec_32bit
        RESTORE_TOP_OF_STACK %r11
-       movq %r15, %r11
-       CFI_REGISTER rip, r11
-       RESTORE_REST
-       pushq %r11
-       CFI_ADJUST_CFA_OFFSET 8
-       CFI_REL_OFFSET rip, 0
-       ret
-
-exec_32bit:
-       CFI_RESTORE_STATE
        movq %rax,RAX(%rsp)
        RESTORE_REST
        jmp int_ret_from_sys_call