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-rw-r--r--arch/s390/include/asm/pgtable.h66
-rw-r--r--arch/s390/include/asm/setup.h9
2 files changed, 59 insertions, 16 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index b4622915bd15..4105b8221fdd 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -306,6 +306,7 @@ extern unsigned long MODULES_END;
#define RCP_HC_BIT 0x00200000UL
#define RCP_GR_BIT 0x00040000UL
#define RCP_GC_BIT 0x00020000UL
+#define RCP_IN_BIT 0x00008000UL /* IPTE notify bit */
/* User dirty / referenced bit for KVM's migration feature */
#define KVM_UR_BIT 0x00008000UL
@@ -373,6 +374,7 @@ extern unsigned long MODULES_END;
#define RCP_HC_BIT 0x0020000000000000UL
#define RCP_GR_BIT 0x0004000000000000UL
#define RCP_GC_BIT 0x0002000000000000UL
+#define RCP_IN_BIT 0x0000800000000000UL /* IPTE notify bit */
/* User dirty / referenced bit for KVM's migration feature */
#define KVM_UR_BIT 0x0000800000000000UL
@@ -746,30 +748,42 @@ struct gmap {
/**
* struct gmap_rmap - reverse mapping for segment table entries
- * @next: pointer to the next gmap_rmap structure in the list
+ * @gmap: pointer to the gmap_struct
* @entry: pointer to a segment table entry
+ * @vmaddr: virtual address in the guest address space
*/
struct gmap_rmap {
struct list_head list;
+ struct gmap *gmap;
unsigned long *entry;
+ unsigned long vmaddr;
};
/**
* struct gmap_pgtable - gmap information attached to a page table
* @vmaddr: address of the 1MB segment in the process virtual memory
- * @mapper: list of segment table entries maping a page table
+ * @mapper: list of segment table entries mapping a page table
*/
struct gmap_pgtable {
unsigned long vmaddr;
struct list_head mapper;
};
+/**
+ * struct gmap_notifier - notify function block for page invalidation
+ * @notifier_call: address of callback function
+ */
+struct gmap_notifier {
+ struct list_head list;
+ void (*notifier_call)(struct gmap *gmap, unsigned long address);
+};
+
struct gmap *gmap_alloc(struct mm_struct *mm);
void gmap_free(struct gmap *gmap);
void gmap_enable(struct gmap *gmap);
void gmap_disable(struct gmap *gmap);
int gmap_map_segment(struct gmap *gmap, unsigned long from,
- unsigned long to, unsigned long length);
+ unsigned long to, unsigned long len);
int gmap_unmap_segment(struct gmap *gmap, unsigned long to, unsigned long len);
unsigned long __gmap_translate(unsigned long address, struct gmap *);
unsigned long gmap_translate(unsigned long address, struct gmap *);
@@ -777,6 +791,24 @@ unsigned long __gmap_fault(unsigned long address, struct gmap *);
unsigned long gmap_fault(unsigned long address, struct gmap *);
void gmap_discard(unsigned long from, unsigned long to, struct gmap *);
+void gmap_register_ipte_notifier(struct gmap_notifier *);
+void gmap_unregister_ipte_notifier(struct gmap_notifier *);
+int gmap_ipte_notify(struct gmap *, unsigned long start, unsigned long len);
+void gmap_do_ipte_notify(struct mm_struct *, unsigned long addr, pte_t *);
+
+static inline pgste_t pgste_ipte_notify(struct mm_struct *mm,
+ unsigned long addr,
+ pte_t *ptep, pgste_t pgste)
+{
+#ifdef CONFIG_PGSTE
+ if (pgste_val(pgste) & RCP_IN_BIT) {
+ pgste_val(pgste) &= ~RCP_IN_BIT;
+ gmap_do_ipte_notify(mm, addr, ptep);
+ }
+#endif
+ return pgste;
+}
+
/*
* Certain architectures need to do special things when PTEs
* within a page table are directly modified. Thus, the following
@@ -1032,8 +1064,10 @@ static inline pte_t ptep_get_and_clear(struct mm_struct *mm,
pte_t pte;
mm->context.flush_mm = 1;
- if (mm_has_pgste(mm))
+ if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
+ pgste = pgste_ipte_notify(mm, address, ptep, pgste);
+ }
pte = *ptep;
if (!mm_exclusive(mm))
@@ -1052,11 +1086,14 @@ static inline pte_t ptep_modify_prot_start(struct mm_struct *mm,
unsigned long address,
pte_t *ptep)
{
+ pgste_t pgste;
pte_t pte;
mm->context.flush_mm = 1;
- if (mm_has_pgste(mm))
- pgste_get_lock(ptep);
+ if (mm_has_pgste(mm)) {
+ pgste = pgste_get_lock(ptep);
+ pgste_ipte_notify(mm, address, ptep, pgste);
+ }
pte = *ptep;
if (!mm_exclusive(mm))
@@ -1082,8 +1119,10 @@ static inline pte_t ptep_clear_flush(struct vm_area_struct *vma,
pgste_t pgste;
pte_t pte;
- if (mm_has_pgste(vma->vm_mm))
+ if (mm_has_pgste(vma->vm_mm)) {
pgste = pgste_get_lock(ptep);
+ pgste = pgste_ipte_notify(vma->vm_mm, address, ptep, pgste);
+ }
pte = *ptep;
__ptep_ipte(address, ptep);
@@ -1111,8 +1150,11 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm,
pgste_t pgste;
pte_t pte;
- if (mm_has_pgste(mm))
+ if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
+ if (!full)
+ pgste = pgste_ipte_notify(mm, address, ptep, pgste);
+ }
pte = *ptep;
if (!full)
@@ -1135,8 +1177,10 @@ static inline pte_t ptep_set_wrprotect(struct mm_struct *mm,
if (pte_write(pte)) {
mm->context.flush_mm = 1;
- if (mm_has_pgste(mm))
+ if (mm_has_pgste(mm)) {
pgste = pgste_get_lock(ptep);
+ pgste = pgste_ipte_notify(mm, address, ptep, pgste);
+ }
if (!mm_exclusive(mm))
__ptep_ipte(address, ptep);
@@ -1160,8 +1204,10 @@ static inline int ptep_set_access_flags(struct vm_area_struct *vma,
if (pte_same(*ptep, entry))
return 0;
- if (mm_has_pgste(vma->vm_mm))
+ if (mm_has_pgste(vma->vm_mm)) {
pgste = pgste_get_lock(ptep);
+ pgste = pgste_ipte_notify(vma->vm_mm, address, ptep, pgste);
+ }
__ptep_ipte(address, ptep);
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index ff67d730c00c..59880dbaf360 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -33,8 +33,6 @@
#define CHUNK_READ_WRITE 0
#define CHUNK_READ_ONLY 1
-#define CHUNK_OLDMEM 4
-#define CHUNK_CRASHK 5
struct mem_chunk {
unsigned long addr;
@@ -43,13 +41,12 @@ struct mem_chunk {
};
extern struct mem_chunk memory_chunk[];
-extern unsigned long real_memory_size;
extern int memory_end_set;
extern unsigned long memory_end;
-void detect_memory_layout(struct mem_chunk chunk[]);
-void create_mem_hole(struct mem_chunk memory_chunk[], unsigned long addr,
- unsigned long size, int type);
+void detect_memory_layout(struct mem_chunk chunk[], unsigned long maxsize);
+void create_mem_hole(struct mem_chunk mem_chunk[], unsigned long addr,
+ unsigned long size);
#define PRIMARY_SPACE_MODE 0
#define ACCESS_REGISTER_MODE 1
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 18:28:33 +0000