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-rw-r--r--arch/s390/include/asm/page.h6
-rw-r--r--arch/s390/kernel/setup.c1
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index e2137b6ec2ed..95403750d25a 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -181,6 +181,7 @@ int arch_make_page_accessible(struct page *page);
struct vm_layout {
unsigned long kaslr_offset;
unsigned long kaslr_offset_phys;
+ unsigned long identity_base;
unsigned long identity_size;
};
@@ -188,6 +189,7 @@ extern struct vm_layout vm_layout;
#define __kaslr_offset vm_layout.kaslr_offset
#define __kaslr_offset_phys vm_layout.kaslr_offset_phys
+#define __identity_base vm_layout.identity_base
#define ident_map_size vm_layout.identity_size
static inline unsigned long kaslr_offset(void)
@@ -203,8 +205,8 @@ static inline int kaslr_enabled(void)
return 0;
}
-#define __PAGE_OFFSET 0x0UL
-#define PAGE_OFFSET 0x0UL
+#define __PAGE_OFFSET __identity_base
+#define PAGE_OFFSET __PAGE_OFFSET
#define __pa_nodebug(x) ((unsigned long)(x))
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index b9d70869bc36..0544830ffb90 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -149,6 +149,7 @@ unsigned long __bootdata_preserved(max_mappable);
struct physmem_info __bootdata(physmem_info);
struct vm_layout __bootdata_preserved(vm_layout);
+EXPORT_SYMBOL_GPL(vm_layout);
int __bootdata_preserved(__kaslr_enabled);
unsigned int __bootdata_preserved(zlib_dfltcc_support);
EXPORT_SYMBOL(zlib_dfltcc_support);