x86: get rid of duplicate code in case of CONFIG_VM86

no need to have the call of do_notify_resume() + checks around it
duplicated for vm86 case - a bit of rearranging of ifdefs and we'll
have a perfectly fine copy to jump back to.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index b6bb692..fe4cc30 100644 (file)
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -618,6 +618,10 @@ work_notifysig:                            # deal with pending signals and
        movl %esp, %eax
        jne work_notifysig_v86          # returning to kernel-space or
                                        # vm86-space
+1:
+#else
+       movl %esp, %eax
+#endif
        TRACE_IRQS_ON
        ENABLE_INTERRUPTS(CLBR_NONE)
        movb PT_CS(%esp), %bl
@@ -628,24 +632,15 @@ work_notifysig:                           # deal with pending signals and
        call do_notify_resume
        jmp resume_userspace
 
+#ifdef CONFIG_VM86
        ALIGN
 work_notifysig_v86:
        pushl_cfi %ecx                  # save ti_flags for do_notify_resume
        call save_v86_state             # %eax contains pt_regs pointer
        popl_cfi %ecx
        movl %eax, %esp
-#else
-       movl %esp, %eax
+       jmp 1b
 #endif
-       TRACE_IRQS_ON
-       ENABLE_INTERRUPTS(CLBR_NONE)
-       movb PT_CS(%esp), %bl
-       andb $SEGMENT_RPL_MASK, %bl
-       cmpb $USER_RPL, %bl
-       jb resume_kernel
-       xorl %edx, %edx
-       call do_notify_resume
-       jmp resume_userspace
 END(work_pending)
 
        # perform syscall exit tracing