hv: init percpu_list in hv_synic_alloc()

Initializing hv_context.percpu_list in hv_synic_alloc() helps to prevent a crash in percpu_channel_enq() when not all CPUs were online during initialization and it naturally belongs there. Signed-off-by: Vitaly Kuznetsov <[email protected]> Signed-off-by: K. Y. Srinivasan <[email protected]> Cc: <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
redbrain17 · Jan 10, 2017 · 3c7630d · 3c7630d
1 parent 421b8f2
commit 3c7630d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
@@ -457,6 +457,8 @@ int hv_synic_alloc(void)
 			pr_err("Unable to allocate post msg page\n");
 			goto err;
 		}
+
+		INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);
 	}
 
 	return 0;
@@ -552,8 +554,6 @@ void hv_synic_init(void *arg)
 	rdmsrl(HV_X64_MSR_VP_INDEX, vp_index);
 	hv_context.vp_index[cpu] = (u32)vp_index;
 
-	INIT_LIST_HEAD(&hv_context.percpu_list[cpu]);
-
 	/*
 	 * Register the per-cpu clockevent source.
 	 */