target/arm/hvf: Check hv_vcpus_exit() returned value

hv_vcpus_exit() returns a hv_return_t enum type (defined
in <Hypervisor/hv_error.h>). Assert we succeeded, as we
are not ready to handle any error path.

Suggested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Mads Ynddal <mads@ynddal.dk>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/hvf/hvf.c b/target/arm/hvf/hvf.c
index 91bbd3a6aae93ad5dc84e988dac782b0db5a1e9b..4c98faebbed80464e8a71eb26d4094f36a0699cf 100644 (file)
--- a/target/arm/hvf/hvf.c
+++ b/target/arm/hvf/hvf.c
@@ -963,9 +963,11 @@ int hvf_arch_init_vcpu(CPUState *cpu)
 
 void hvf_kick_vcpu_thread(CPUState *cpu)
 {
+    hv_return_t ret;
     trace_hvf_kick_vcpu_thread(cpu->cpu_index, cpu->stop);
     cpus_kick_thread(cpu);
-    hv_vcpus_exit(&cpu->accel->fd, 1);
+    ret = hv_vcpus_exit(&cpu->accel->fd, 1);
+    assert_hvf_ok(ret);
 }
 
 static void hvf_raise_exception(CPUState *cpu, uint32_t excp,