s390/mm: prepare for EDAT1/EDAT2 support in gmap shadow

[karo-tx-linux.git] / arch / s390 / include / asm / gmap.h

diff --git a/arch/s390/include/asm/gmap.h b/arch/s390/include/asm/gmap.h
index 54a2487efce4f784393f1d6399c42f1ee5ff1584..2ab397c8ca092b66e9e64725419068c67a60914f 100644 (file)
--- a/arch/s390/include/asm/gmap.h
+++ b/arch/s390/include/asm/gmap.h
@@ -26,6 +26,7 @@
  * @shadow_lock: spinlock to protect the shadow gmap list
  * @parent: pointer to the parent gmap for shadow guest address spaces
  * @orig_asce: ASCE for which the shadow page table has been created
+ * @edat_level: edat level to be used for the shadow translation
  * @removed: flag to indicate if a shadow guest address space has been removed
  * @initialized: flag to indicate if a shadow guest address space can be used
  */
@@ -49,6 +50,7 @@ struct gmap {
        spinlock_t shadow_lock;
        struct gmap *parent;
        unsigned long orig_asce;
+       int edat_level;
        bool removed;
        bool initialized;
 };
@@ -105,7 +107,8 @@ void gmap_unlink(struct mm_struct *, unsigned long *table, unsigned long vmaddr)
 
 int gmap_read_table(struct gmap *gmap, unsigned long gaddr, unsigned long *val);
 
-struct gmap *gmap_shadow(struct gmap *parent, unsigned long asce);
+struct gmap *gmap_shadow(struct gmap *parent, unsigned long asce,
+                        int edat_level);
 int gmap_shadow_r2t(struct gmap *sg, unsigned long saddr, unsigned long r2t);
 int gmap_shadow_r3t(struct gmap *sg, unsigned long saddr, unsigned long r3t);
 int gmap_shadow_sgt(struct gmap *sg, unsigned long saddr, unsigned long sgt);