1 files changed, 8 insertions, 61 deletions

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index ccfcba90de6e..4ca5b782ed70 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -229,6 +229,11 @@ entry_SYSCALL_64_fastpath:
          */
         USERGS_SYSRET64
 
+GLOBAL(int_ret_from_sys_call_irqs_off)
+        TRACE_IRQS_ON
+        ENABLE_INTERRUPTS(CLBR_NONE)
+        jmp int_ret_from_sys_call
+
         /* Do syscall entry tracing */
 tracesys:
         movq    %rsp, %rdi
@@ -272,69 +277,11 @@ tracesys_phase2:
  * Has correct iret frame.
  */
 GLOBAL(int_ret_from_sys_call)
-        DISABLE_INTERRUPTS(CLBR_NONE)
-int_ret_from_sys_call_irqs_off: /* jumps come here from the irqs-off SYSRET path */
-        TRACE_IRQS_OFF
-        movl    $_TIF_ALLWORK_MASK, %edi
-        /* edi: mask to check */
-GLOBAL(int_with_check)
-        LOCKDEP_SYS_EXIT_IRQ
-        GET_THREAD_INFO(%rcx)
-        movl    TI_flags(%rcx), %edx
-        andl    %edi, %edx
-        jnz     int_careful
-        andl    $~TS_COMPAT, TI_status(%rcx)
-        jmp     syscall_return
-
-        /*
-         * Either reschedule or signal or syscall exit tracking needed.
-         * First do a reschedule test.
-         * edx: work, edi: workmask
-         */
-int_careful:
-        bt      $TIF_NEED_RESCHED, %edx
-        jnc     int_very_careful
-        TRACE_IRQS_ON
-        ENABLE_INTERRUPTS(CLBR_NONE)
-        pushq   %rdi
-        SCHEDULE_USER
-        popq    %rdi
-        DISABLE_INTERRUPTS(CLBR_NONE)
-        TRACE_IRQS_OFF
-        jmp     int_with_check
-
-        /* handle signals and tracing -- both require a full pt_regs */
-int_very_careful:
-        TRACE_IRQS_ON
-        ENABLE_INTERRUPTS(CLBR_NONE)
         SAVE_EXTRA_REGS
-        /* Check for syscall exit trace */
-        testl   $_TIF_WORK_SYSCALL_EXIT, %edx
-        jz      int_signal
-        pushq   %rdi
-        leaq    8(%rsp), %rdi                   /* &ptregs -> arg1 */
-        call    syscall_trace_leave
-        popq    %rdi
-        andl    $~(_TIF_WORK_SYSCALL_EXIT|_TIF_SYSCALL_EMU), %edi
-        jmp     int_restore_rest
-
-int_signal:
-        testl   $_TIF_DO_NOTIFY_MASK, %edx
-        jz      1f
-        movq    %rsp, %rdi                      /* &ptregs -> arg1 */
-        xorl    %esi, %esi                      /* oldset -> arg2 */
-        call    do_notify_resume
-1:      movl    $_TIF_WORK_MASK, %edi
-int_restore_rest:
+        movq    %rsp, %rdi
+        call    syscall_return_slowpath /* returns with IRQs disabled */
         RESTORE_EXTRA_REGS
-        DISABLE_INTERRUPTS(CLBR_NONE)
-        TRACE_IRQS_OFF
-        jmp     int_with_check
-
-syscall_return:
-        /* The IRETQ could re-enable interrupts: */
-        DISABLE_INTERRUPTS(CLBR_ANY)
-        TRACE_IRQS_IRETQ
+        TRACE_IRQS_IRETQ                /* we're about to change IF */
 
         /*
          * Try to use SYSRET instead of IRET if we're returning to