[PATCH 13/16] target/arm/hvf: Lock BQL outside of the vCPU inner execution loop

["Philippe Mathieu-Daudé" <philmd@oss.qualcomm.com>]

Reduce lock contention by acquiring / releasing the BQL
outside of the entire vCPU inner loop.

Signed-off-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
---
 target/arm/hvf/hvf.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c
index c14ea54a67f..9c6408d2e25 100644
--- a/target/arm/hvf/hvf.c
+++ b/target/arm/hvf/hvf.c
@@ -2598,20 +2598,20 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
         }
     }
 
+    bql_unlock();
+    cpu_exec_start(cpu);
+
     /* Inner vCPU loop */
     do {
         if (!(cpu->singlestep_flags & SSTEP_NOIRQ) &&
             hvf_inject_interrupts(cpu)) {
-            return EXCP_INTERRUPT;
+            ret = EXCP_INTERRUPT;
+            break;
         }
 
         flush_cpu_state(cpu);
 
-        bql_unlock();
-        cpu_exec_start(cpu);
         r = hv_vcpu_run(cpu->accel->fd);
-        cpu_exec_end(cpu);
-        bql_lock();
         switch (r) {
         case HV_SUCCESS:
             ret = hvf_handle_vmexit(cpu, cpu->accel->exit);
@@ -2624,6 +2624,9 @@ int hvf_arch_vcpu_exec(CPUState *cpu)
         }
     } while (ret == 0);
 
+    cpu_exec_end(cpu);
+    bql_lock();
+
     return ret;
 }
 
-- 
2.53.0