[patch v3 17/36] x86/xen/hvm: Get rid of DEAD_FROZEN handling

[Thomas Gleixner <tglx@xxxxxxxxxxxxx>]

From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

No point in this conditional voodoo. Un-initializing the lock mechanism is
safe to be called unconditionally even if it was already invoked when the
CPU died.

Remove the invocation of xen_smp_intr_free() as that has been already
cleaned up in xen_cpu_dead_hvm().

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Tested-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>


---
 arch/x86/xen/enlighten_hvm.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)
---

--- a/arch/x86/xen/enlighten_hvm.c
+++ b/arch/x86/xen/enlighten_hvm.c
@@ -161,13 +161,12 @@ static int xen_cpu_up_prepare_hvm(unsign
        int rc = 0;
 
        /*
-        * This can happen if CPU was offlined earlier and
-        * offlining timed out in common_cpu_die().
+        * If a CPU was offlined earlier and offlining timed out then the
+        * lock mechanism is still initialized. Uninit it unconditionally
+        * as it's safe to call even if already uninited. Interrupts and
+        * timer have already been handled in xen_cpu_dead_hvm().
         */
-       if (cpu_report_state(cpu) == CPU_DEAD_FROZEN) {
-               xen_smp_intr_free(cpu);
-               xen_uninit_lock_cpu(cpu);
-       }
+       xen_uninit_lock_cpu(cpu);
 
        if (cpu_acpi_id(cpu) != U32_MAX)
                per_cpu(xen_vcpu_id, cpu) = cpu_acpi_id(cpu);