[Xen-devel] [PATCH Remus v2 04/10] tools/libxc: introduce DECLARE_HYPERCALL_BUFFER_USER_POINTER

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

Define a user pointer that can access the hypercall buffer data
Useful when you only need to access the hypercall buffer data

Signed-off-by: Yang Hongyang <yanghy@xxxxxxxxxxxxxx>
---
 tools/libxc/include/xenctrl.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h
index 6994c51..12e8c36 100644
--- a/tools/libxc/include/xenctrl.h
+++ b/tools/libxc/include/xenctrl.h
@@ -296,6 +296,14 @@ typedef struct xc_hypercall_buffer xc_hypercall_buffer_t;
     }
 
 /*
+ * Define a user pointer that can access the hypercall buffer data
+ *
+ * Useful when you only need to access the hypercall buffer data
+ */
+#define DECLARE_HYPERCALL_BUFFER_USER_POINTER(_type, _name, _hbuf)  \
+    _type *_name = _hbuf->hbuf;
+
+/*
  * Declare the necessary data structure to allow a hypercall buffer
  * passed as an argument to a function to be used in the normal way.
  */
-- 
1.9.1


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