x86/shadow: convert non-const statics

To make obvious that such statics are safe to use, they should be
const. In some of the cases, they wouldn't even need to be static, but
keep them so upon the maintainer's request.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Tim Deegan <tim@xen.org>

diff --git a/xen/arch/x86/mm/shadow/common.c b/xen/arch/x86/mm/shadow/common.c
index b523a1c2268eb9b3bf490779b897603e57dbbbcb..7e6aeeb2c352699fc0dd18268312dff82ef32582 100644 (file)
--- a/xen/arch/x86/mm/shadow/common.c
+++ b/xen/arch/x86/mm/shadow/common.c
@@ -2162,7 +2162,7 @@ int sh_remove_write_access(struct vcpu *v, mfn_t gmfn,
         NULL  /* unused  */
     };
 
-    static unsigned int callback_mask = 
+    static const unsigned int callback_mask =
           1 << SH_type_l1_32_shadow
         | 1 << SH_type_fl1_32_shadow
         | 1 << SH_type_l1_pae_shadow
@@ -2412,7 +2412,7 @@ int sh_remove_all_mappings(struct vcpu *v, mfn_t gmfn)
         NULL  /* unused  */
     };
 
-    static unsigned int callback_mask = 
+    static const unsigned int callback_mask =
           1 << SH_type_l1_32_shadow
         | 1 << SH_type_fl1_32_shadow
         | 1 << SH_type_l1_pae_shadow
@@ -2556,7 +2556,7 @@ void sh_remove_shadows(struct vcpu *v, mfn_t gmfn, int fast, int all)
     };
 
     /* Another lookup table, for choosing which mask to use */
-    static unsigned int masks[SH_type_unused] = {
+    static const unsigned int masks[SH_type_unused] = {
         0, /* none    */
         1 << SH_type_l2_32_shadow, /* l1_32   */
         0, /* fl1_32  */
@@ -2683,7 +2683,7 @@ static int sh_clear_up_pointer(struct vcpu *v, mfn_t smfn, mfn_t unused)
 
 void sh_reset_l3_up_pointers(struct vcpu *v)
 {
-    static hash_callback_t callbacks[SH_type_unused] = {
+    static const hash_callback_t callbacks[SH_type_unused] = {
         NULL, /* none    */
         NULL, /* l1_32   */
         NULL, /* fl1_32  */
@@ -2701,7 +2701,7 @@ void sh_reset_l3_up_pointers(struct vcpu *v)
         NULL, /* p2m     */
         NULL  /* unused  */
     };
-    static unsigned int callback_mask = 1 << SH_type_l3_64_shadow;    
+    static const unsigned int callback_mask = 1 << SH_type_l3_64_shadow;
 
     hash_foreach(v, callback_mask, callbacks, _mfn(INVALID_MFN));
 }