1 files changed, 12 insertions, 8 deletions

diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c
index 4bef35b79b93..ec0bd9457e90 100644
--- a/arch/s390/kernel/os_info.c
+++ b/arch/s390/kernel/os_info.c
@@ -13,8 +13,10 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <asm/checksum.h>
-#include <asm/lowcore.h>
+#include <asm/abs_lowcore.h>
 #include <asm/os_info.h>
+#include <asm/maccess.h>
+#include <asm/asm-offsets.h>
 
 /*
  * OS info structure has to be page aligned
@@ -45,7 +47,7 @@ void os_info_crashkernel_add(unsigned long base, unsigned long size)
  */
 void os_info_entry_add(int nr, void *ptr, u64 size)
 {
-	os_info.entry[nr].addr = (u64)(unsigned long)ptr;
+	os_info.entry[nr].addr = __pa(ptr);
 	os_info.entry[nr].size = size;
 	os_info.entry[nr].csum = (__force u32)csum_partial(ptr, size, 0);
 	os_info.csum = os_info_csum(&os_info);
@@ -56,13 +58,16 @@ void os_info_entry_add(int nr, void *ptr, u64 size)
  */
 void __init os_info_init(void)
 {
-	void *ptr = &os_info;
+	struct lowcore *abs_lc;
+	unsigned long flags;
 
 	os_info.version_major = OS_INFO_VERSION_MAJOR;
 	os_info.version_minor = OS_INFO_VERSION_MINOR;
 	os_info.magic = OS_INFO_MAGIC;
 	os_info.csum = os_info_csum(&os_info);
-	mem_assign_absolute(S390_lowcore.os_info, (unsigned long) ptr);
+	abs_lc = get_abs_lowcore(&flags);
+	abs_lc->os_info = __pa(&os_info);
+	put_abs_lowcore(abs_lc, flags);
 }
 
 #ifdef CONFIG_CRASH_DUMP
@@ -90,7 +95,7 @@ static void os_info_old_alloc(int nr, int align)
 		goto fail;
 	}
 	buf_align = PTR_ALIGN(buf, align);
-	if (copy_oldmem_kernel(buf_align, (void *) addr, size)) {
+	if (copy_oldmem_kernel(buf_align, addr, size)) {
 		msg = "copy failed";
 		goto fail_free;
 	}
@@ -123,15 +128,14 @@ static void os_info_old_init(void)
 		return;
 	if (!oldmem_data.start)
 		goto fail;
-	if (copy_oldmem_kernel(&addr, &S390_lowcore.os_info, sizeof(addr)))
+	if (copy_oldmem_kernel(&addr, __LC_OS_INFO, sizeof(addr)))
 		goto fail;
 	if (addr == 0 || addr % PAGE_SIZE)
 		goto fail;
 	os_info_old = kzalloc(sizeof(*os_info_old), GFP_KERNEL);
 	if (!os_info_old)
 		goto fail;
-	if (copy_oldmem_kernel(os_info_old, (void *) addr,
-			       sizeof(*os_info_old)))
+	if (copy_oldmem_kernel(os_info_old, addr, sizeof(*os_info_old)))
 		goto fail_free;
 	if (os_info_old->magic != OS_INFO_MAGIC)
 		goto fail_free;