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authorHeiko Carstens <heiko.carstens@de.ibm.com>2015-02-12 13:08:27 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-03-25 11:49:33 +0100
commit5a79859ae0f35d25c67a03e82bf0c80592f16a39 (patch)
tree37264d49f069812f19ced94e6ae171814fb7e498 /arch/s390/mm/fault.c
parent1833c9f647e9bda1cd24653ff8f9c207b5f5b911 (diff)
downloadlinux-5a79859ae0f35d25c67a03e82bf0c80592f16a39.tar.bz2
s390: remove 31 bit support
Remove the 31 bit support in order to reduce maintenance cost and effectively remove dead code. Since a couple of years there is no distribution left that comes with a 31 bit kernel. The 31 bit kernel also has been broken since more than a year before anybody noticed. In addition I added a removal warning to the kernel shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning message") which let everybody know about the plan to remove 31 bit code. We didn't get any response. Given that the last 31 bit only machine was introduced in 1999 let's remove the code. Anybody with 31 bit user space code can still use the compat mode. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/fault.c')
-rw-r--r--arch/s390/mm/fault.c36
1 files changed, 0 insertions, 36 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 3ff86533f7db..76515bcea2f1 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -36,15 +36,9 @@
#include <asm/facility.h>
#include "../kernel/entry.h"
-#ifndef CONFIG_64BIT
-#define __FAIL_ADDR_MASK 0x7ffff000
-#define __SUBCODE_MASK 0x0200
-#define __PF_RES_FIELD 0ULL
-#else /* CONFIG_64BIT */
#define __FAIL_ADDR_MASK -4096L
#define __SUBCODE_MASK 0x0600
#define __PF_RES_FIELD 0x8000000000000000ULL
-#endif /* CONFIG_64BIT */
#define VM_FAULT_BADCONTEXT 0x010000
#define VM_FAULT_BADMAP 0x020000
@@ -54,7 +48,6 @@
static unsigned long store_indication __read_mostly;
-#ifdef CONFIG_64BIT
static int __init fault_init(void)
{
if (test_facility(75))
@@ -62,7 +55,6 @@ static int __init fault_init(void)
return 0;
}
early_initcall(fault_init);
-#endif
static inline int notify_page_fault(struct pt_regs *regs)
{
@@ -133,7 +125,6 @@ static int bad_address(void *p)
return probe_kernel_address((unsigned long *)p, dummy);
}
-#ifdef CONFIG_64BIT
static void dump_pagetable(unsigned long asce, unsigned long address)
{
unsigned long *table = __va(asce & PAGE_MASK);
@@ -187,33 +178,6 @@ bad:
pr_cont("BAD\n");
}
-#else /* CONFIG_64BIT */
-
-static void dump_pagetable(unsigned long asce, unsigned long address)
-{
- unsigned long *table = __va(asce & PAGE_MASK);
-
- pr_alert("AS:%08lx ", asce);
- table = table + ((address >> 20) & 0x7ff);
- if (bad_address(table))
- goto bad;
- pr_cont("S:%08lx ", *table);
- if (*table & _SEGMENT_ENTRY_INVALID)
- goto out;
- table = (unsigned long *)(*table & _SEGMENT_ENTRY_ORIGIN);
- table = table + ((address >> 12) & 0xff);
- if (bad_address(table))
- goto bad;
- pr_cont("P:%08lx ", *table);
-out:
- pr_cont("\n");
- return;
-bad:
- pr_cont("BAD\n");
-}
-
-#endif /* CONFIG_64BIT */
-
static void dump_fault_info(struct pt_regs *regs)
{
unsigned long asce;