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-rw-r--r--hw/i386/intel_iommu.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 0a4282adf3..7da70ff349 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -745,6 +745,9 @@ static inline bool vtd_is_interrupt_addr(hwaddr addr)
/* Map dev to context-entry then do a paging-structures walk to do a iommu
* translation.
+ *
+ * Called from RCU critical section.
+ *
* @bus_num: The bus number
* @devfn: The devfn, which is the combined of device and function number
* @is_write: The access is a write operation