Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core...

[sfrench/cifs-2.6.git] / arch / x86 / kernel / entry_32.S

diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 6bc07f0f1202eeb1eaac0b55064acad7f355371a..cdfd94cc6b14e4fd1c06c058904e13c2f6575810 100644 (file)
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -332,7 +332,7 @@ sysenter_past_esp:
        GET_THREAD_INFO(%ebp)
 
        /* Note, _TIF_SECCOMP is bit number 8, and so it needs testw and not testb */
-       testw $(_TIF_SYSCALL_EMU|_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
+       testw $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
        jnz syscall_trace_entry
        cmpl $(nr_syscalls), %eax
        jae syscall_badsys
@@ -370,7 +370,7 @@ ENTRY(system_call)
        GET_THREAD_INFO(%ebp)
                                        # system call tracing in operation / emulation
        /* Note, _TIF_SECCOMP is bit number 8, and so it needs testw and not testb */
-       testw $(_TIF_SYSCALL_EMU|_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT),TI_flags(%ebp)
+       testw $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
        jnz syscall_trace_entry
        cmpl $(nr_syscalls), %eax
        jae syscall_badsys
@@ -383,10 +383,6 @@ syscall_exit:
                                        # setting need_resched or sigpending
                                        # between sampling and the iret
        TRACE_IRQS_OFF
-       testl $X86_EFLAGS_TF,PT_EFLAGS(%esp)    # If tracing set singlestep flag on exit
-       jz no_singlestep
-       orl $_TIF_SINGLESTEP,TI_flags(%ebp)
-no_singlestep:
        movl TI_flags(%ebp), %ecx
        testw $_TIF_ALLWORK_MASK, %cx   # current->work
        jne syscall_exit_work
@@ -514,12 +510,8 @@ END(work_pending)
 syscall_trace_entry:
        movl $-ENOSYS,PT_EAX(%esp)
        movl %esp, %eax
-       xorl %edx,%edx
-       call do_syscall_trace
-       cmpl $0, %eax
-       jne resume_userspace            # ret != 0 -> running under PTRACE_SYSEMU,
-                                       # so must skip actual syscall
-       movl PT_ORIG_EAX(%esp), %eax
+       call syscall_trace_enter
+       /* What it returned is what we'll actually use.  */
        cmpl $(nr_syscalls), %eax
        jnae syscall_call
        jmp syscall_exit
@@ -528,14 +520,13 @@ END(syscall_trace_entry)
        # perform syscall exit tracing
        ALIGN
 syscall_exit_work:
-       testb $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP), %cl
+       testb $_TIF_WORK_SYSCALL_EXIT, %cl
        jz work_pending
        TRACE_IRQS_ON
-       ENABLE_INTERRUPTS(CLBR_ANY)     # could let do_syscall_trace() call
+       ENABLE_INTERRUPTS(CLBR_ANY)     # could let syscall_trace_leave() call
                                        # schedule() instead
        movl %esp, %eax
-       movl $1, %edx
-       call do_syscall_trace
+       call syscall_trace_leave
        jmp resume_userspace
 END(syscall_exit_work)
        CFI_ENDPROC
@@ -1024,6 +1015,7 @@ ENDPROC(kernel_thread_helper)
 ENTRY(xen_sysenter_target)
        RING0_INT_FRAME
        addl $5*4, %esp         /* remove xen-provided frame */
+       CFI_ADJUST_CFA_OFFSET -5*4
        jmp sysenter_past_esp
        CFI_ENDPROC