From: "Emilio G. Cota" <c...@braap.org>
Suggested-by: Alex Bennée <alex.ben...@linaro.org>
Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
Signed-off-by: Emilio G. Cota <c...@braap.org>
---
cpus-common.c | 2 ++
include/qom/cpu.h | 13 +++++++++++++
2 files changed, 15 insertions(+)
diff --git a/cpus-common.c b/cpus-common.c
index 3ca58c64e8..960058457a 100644
--- a/cpus-common.c
+++ b/cpus-common.c
@@ -335,7 +335,9 @@ void process_queued_cpu_work(CPUState *cpu)
*/
qemu_mutex_unlock_iothread();
start_exclusive();
+ cpu->in_exclusive_work_context = true;
wi->func(cpu, wi->data);
+ cpu->in_exclusive_work_context = false;
end_exclusive();
qemu_mutex_lock_iothread();
} else {
diff --git a/include/qom/cpu.h b/include/qom/cpu.h
index 5ee0046b62..08481ad304 100644
--- a/include/qom/cpu.h
+++ b/include/qom/cpu.h
@@ -373,6 +373,7 @@ struct CPUState {
bool unplug;
bool crash_occurred;
bool exit_request;
+ bool in_exclusive_work_context;
uint32_t cflags_next_tb;
/* updates protected by BQL */
uint32_t interrupt_request;
@@ -785,6 +786,18 @@ void async_run_on_cpu(CPUState *cpu, run_on_cpu_func func,
run_on_cpu_data data)
*/
void async_safe_run_on_cpu(CPUState *cpu, run_on_cpu_func func,
run_on_cpu_data data);
+/**
+ * cpu_in_exclusive_work_context()
+ * @cpu: The vCPU to check
+ *
+ * Returns true if @cpu is an exclusive work context, which has
+ * previously been queued via async_safe_run_on_cpu().
+ */
+static inline bool cpu_in_exclusive_work_context(const CPUState *cpu)
+{
+ return cpu->in_exclusive_work_context;
+}
+
/**
* qemu_get_cpu:
* @index: The CPUState@cpu_index value of the CPU to obtain.
--
2.20.1
