Signed-off-by: Ian Campbell <ian.campb...@citrix.com>
---
tools/libs/foreignmemory/include/xenforeignmemory.h | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/libs/foreignmemory/include/xenforeignmemory.h
b/tools/libs/foreignmemory/include/xenforeignmemory.h
index 99ec883..3f52417 100644
--- a/tools/libs/foreignmemory/include/xenforeignmemory.h
+++ b/tools/libs/foreignmemory/include/xenforeignmemory.h
@@ -32,7 +32,12 @@ typedef struct xentoollog_logger xentoollog_logger;
typedef struct xenforeignmemory_handle xenforeignmemory_handle;
/*
- * Return a handle onto the hypercall driver. Logs errors.
+ * Return a handle onto the foreign memory mapping driver. Logs errors.
+ *
+ * Note: After fork a child process must not use any opened handle
+ * inherited from their parent. Any existing mappings should be
+ * assumed to become invalid. Therefore children must open a new
+ * handle and make new mappings if necessary.
*/
xenforeignmemory_handle *xenforeignmemory_open(xentoollog_logger *logger,
unsigned open_flags);
--
2.1.4
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