summaryrefslogtreecommitdiff
path: root/arch/x86/kernel/entry_32.S
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2012-05-26 01:07:39 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-01 09:58:15 -0400
commit969ae0bfb079de892a95aa4ca1e8ac76c4beb57c (patch)
tree78f82c9573857f939f9c1caaac07ef455d20de27 /arch/x86/kernel/entry_32.S
parentfe9d7feab567085112ca02b238c839ca1b4cd9c5 (diff)
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>
Diffstat (limited to 'arch/x86/kernel/entry_32.S')
-rw-r--r--arch/x86/kernel/entry_32.S17
1 files changed, 6 insertions, 11 deletions
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index b6bb69239296..fe4cc305d8da 100644
--- 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