[Xen-devel] [PATCH 2/8] xen/public: sysctl: set_parameter.params and debug.keys should be const

[Julien Grall <julien@xxxxxxx>]

From: Julien Grall <jgrall@xxxxxxxxxx>

The fields set_parameter.params and debug.keys should never be modified
by the hypervisor. So mark them as const.

Signed-off-by: Julien Grall <jgrall@xxxxxxxxxx>

---

I am not entirely sure whether we should bump the systcl version for
this change. Any thoughts?
---
 xen/include/public/sysctl.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h
index 3d72fab49f..3a08c512e8 100644
--- a/xen/include/public/sysctl.h
+++ b/xen/include/public/sysctl.h
@@ -170,7 +170,7 @@ struct xen_sysctl_getdomaininfolist {
 /* XEN_SYSCTL_debug_keys */
 struct xen_sysctl_debug_keys {
     /* IN variables. */
-    XEN_GUEST_HANDLE_64(char) keys;
+    XEN_GUEST_HANDLE_64(const_char) keys;
     uint32_t nr_keys;
 };
 
@@ -1037,7 +1037,7 @@ struct xen_sysctl_livepatch_op {
  */
 
 struct xen_sysctl_set_parameter {
-    XEN_GUEST_HANDLE_64(char) params;       /* IN: pointer to parameters. */
+    XEN_GUEST_HANDLE_64(const_char) params; /* IN: pointer to parameters. */
     uint16_t size;                          /* IN: size of parameters. */
     uint16_t pad[3];                        /* IN: MUST be zero. */
 };
-- 
2.17.1