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-rw-r--r--include/exec/memory.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h
index c6ce74fb79..e58c09f130 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -149,6 +149,14 @@ typedef struct IOMMUTLBEvent {
/* RAM is a persistent kind memory */
#define RAM_PMEM (1 << 5)
+
+/*
+ * UFFDIO_WRITEPROTECT is used on this RAMBlock to
+ * support 'write-tracking' migration type.
+ * Implies ram_state->ram_wt_enabled.
+ */
+#define RAM_UF_WRITEPROTECT (1 << 6)
+
static inline void iommu_notifier_init(IOMMUNotifier *n, IOMMUNotify fn,
IOMMUNotifierFlag flags,
hwaddr start, hwaddr end,