Unless I missed something, 44fbbb3dc687c ("x86: get rid of calling
do_notify_resume() when returning to kernel mode") was unnecessarily
paranoid. It split the exit path into resume_userspace and
resume_kernel, after which it was no longer possible to get to
work_notifysig when returning to kernel mode. The check for kernel
mode in work_notifysig is superfluous. Remove it.
Cc: Al Viro <[email protected]>
Signed-off-by: Andy Lutomirski <[email protected]>
---
arch/x86/entry/entry_32.S | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index a36d5df6a749..66ff9c4055d7 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -491,10 +491,6 @@ work_notifysig: # deal
with pending signals and
#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
--
2.4.3
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