Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:
 "The major change in this merge is the removal of the support for
  31-bit kernels.  Naturally 31-bit user space will continue to work via
  the compat layer.

  And then some cleanup, some improvements and bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (23 commits)
  s390/smp: wait until secondaries are active & online
  s390/hibernate: fix save and restore of kernel text section
  s390/cacheinfo: add missing facility check
  s390/syscalls: simplify syscall_get_arch()
  s390/irq: enforce correct irqclass_sub_desc array size
  s390: remove "64" suffix from mem64.S and swsusp_asm64.S
  s390/ipl: cleanup macro usage
  s390/ipl: cleanup shutdown_action attributes
  s390/ipl: cleanup bin attr usage
  s390/uprobes: fix address space annotation
  s390: add missing arch_release_task_struct() declaration
  s390: make couple of functions and variables static
  s390/maccess: improve s390_kernel_write()
  s390/maccess: remove potentially broken probe_kernel_write()
  s390/watchdog: support for KVM hypervisors and delete pr_info messages
  s390/watchdog: enable KEEPALIVE for /dev/watchdog
  s390/dasd: remove setting of scheduler from driver
  s390/traps: panic() instead of die() on translation exception
  s390: remove test_facility(2) (== z/Architecture mode active) checks
  s390/cmpxchg: simplify cmpxchg_double
  ...

1 files changed, 61 insertions, 75 deletions

diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c
index 53dd5d7a0c96..4614d415bb58 100644
--- a/arch/s390/lib/uaccess.c
+++ b/arch/s390/lib/uaccess.c
@@ -15,20 +15,6 @@
 #include <asm/mmu_context.h>
 #include <asm/facility.h>
 
-#ifndef CONFIG_64BIT
-#define AHI	"ahi"
-#define ALR	"alr"
-#define CLR	"clr"
-#define LHI	"lhi"
-#define SLR	"slr"
-#else
-#define AHI	"aghi"
-#define ALR	"algr"
-#define CLR	"clgr"
-#define LHI	"lghi"
-#define SLR	"slgr"
-#endif
-
 static struct static_key have_mvcos = STATIC_KEY_INIT_FALSE;
 
 static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr,
@@ -41,29 +27,29 @@ static inline unsigned long copy_from_user_mvcos(void *x, const void __user *ptr
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%2),0(%1),0\n"
 		"9: jz    7f\n"
-		"1:"ALR"  %0,%3\n"
-		"  "SLR"  %1,%3\n"
-		"  "SLR"  %2,%3\n"
+		"1: algr  %0,%3\n"
+		"   slgr  %1,%3\n"
+		"   slgr  %2,%3\n"
 		"   j     0b\n"
 		"2: la    %4,4095(%1)\n"/* %4 = ptr + 4095 */
 		"   nr    %4,%3\n"	/* %4 = (ptr + 4095) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   4f\n"
 		"3: .insn ss,0xc80000000000,0(%4,%2),0(%1),0\n"
-		"10:"SLR"  %0,%4\n"
-		"  "ALR"  %2,%4\n"
-		"4:"LHI"  %4,-1\n"
-		"  "ALR"  %4,%0\n"	/* copy remaining size, subtract 1 */
+		"10:slgr  %0,%4\n"
+		"   algr  %2,%4\n"
+		"4: lghi  %4,-1\n"
+		"   algr  %4,%0\n"	/* copy remaining size, subtract 1 */
 		"   bras  %3,6f\n"	/* memset loop */
 		"   xc    0(1,%2),0(%2)\n"
 		"5: xc    0(256,%2),0(%2)\n"
 		"   la    %2,256(%2)\n"
-		"6:"AHI"  %4,-256\n"
+		"6: aghi  %4,-256\n"
 		"   jnm   5b\n"
 		"   ex    %4,0(%3)\n"
 		"   j     8f\n"
-		"7:"SLR"  %0,%0\n"
+		"7:slgr  %0,%0\n"
 		"8:\n"
 		EX_TABLE(0b,2b) EX_TABLE(3b,4b) EX_TABLE(9b,2b) EX_TABLE(10b,4b)
 		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
@@ -82,32 +68,32 @@ static inline unsigned long copy_from_user_mvcp(void *x, const void __user *ptr,
 		"   sacf  0\n"
 		"0: mvcp  0(%0,%2),0(%1),%3\n"
 		"10:jz    8f\n"
-		"1:"ALR"  %0,%3\n"
+		"1: algr  %0,%3\n"
 		"   la    %1,256(%1)\n"
 		"   la    %2,256(%2)\n"
 		"2: mvcp  0(%0,%2),0(%1),%3\n"
 		"11:jnz   1b\n"
 		"   j     8f\n"
 		"3: la    %4,255(%1)\n"	/* %4 = ptr + 255 */
-		"  "LHI"  %3,-4096\n"
+		"   lghi  %3,-4096\n"
 		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   5f\n"
 		"4: mvcp  0(%4,%2),0(%1),%3\n"
-		"12:"SLR"  %0,%4\n"
-		"  "ALR"  %2,%4\n"
-		"5:"LHI"  %4,-1\n"
-		"  "ALR"  %4,%0\n"	/* copy remaining size, subtract 1 */
+		"12:slgr  %0,%4\n"
+		"   algr  %2,%4\n"
+		"5: lghi  %4,-1\n"
+		"   algr  %4,%0\n"	/* copy remaining size, subtract 1 */
 		"   bras  %3,7f\n"	/* memset loop */
 		"   xc    0(1,%2),0(%2)\n"
 		"6: xc    0(256,%2),0(%2)\n"
 		"   la    %2,256(%2)\n"
-		"7:"AHI"  %4,-256\n"
+		"7: aghi  %4,-256\n"
 		"   jnm   6b\n"
 		"   ex    %4,0(%3)\n"
 		"   j     9f\n"
-		"8:"SLR"  %0,%0\n"
+		"8:slgr  %0,%0\n"
 		"9: sacf  768\n"
 		EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,5b)
 		EX_TABLE(10b,3b) EX_TABLE(11b,3b) EX_TABLE(12b,5b)
@@ -134,19 +120,19 @@ static inline unsigned long copy_to_user_mvcos(void __user *ptr, const void *x,
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
 		"6: jz    4f\n"
-		"1:"ALR"  %0,%3\n"
-		"  "SLR"  %1,%3\n"
-		"  "SLR"  %2,%3\n"
+		"1: algr  %0,%3\n"
+		"   slgr  %1,%3\n"
+		"   slgr  %2,%3\n"
 		"   j     0b\n"
 		"2: la    %4,4095(%1)\n"/* %4 = ptr + 4095 */
 		"   nr    %4,%3\n"	/* %4 = (ptr + 4095) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   5f\n"
 		"3: .insn ss,0xc80000000000,0(%4,%1),0(%2),0\n"
-		"7:"SLR"  %0,%4\n"
+		"7: slgr  %0,%4\n"
 		"   j     5f\n"
-		"4:"SLR"  %0,%0\n"
+		"4: slgr  %0,%0\n"
 		"5:\n"
 		EX_TABLE(0b,2b) EX_TABLE(3b,5b) EX_TABLE(6b,2b) EX_TABLE(7b,5b)
 		: "+a" (size), "+a" (ptr), "+a" (x), "+a" (tmp1), "=a" (tmp2)
@@ -165,22 +151,22 @@ static inline unsigned long copy_to_user_mvcs(void __user *ptr, const void *x,
 		"   sacf  0\n"
 		"0: mvcs  0(%0,%1),0(%2),%3\n"
 		"7: jz    5f\n"
-		"1:"ALR"  %0,%3\n"
+		"1: algr  %0,%3\n"
 		"   la    %1,256(%1)\n"
 		"   la    %2,256(%2)\n"
 		"2: mvcs  0(%0,%1),0(%2),%3\n"
 		"8: jnz   1b\n"
 		"   j     5f\n"
 		"3: la    %4,255(%1)\n" /* %4 = ptr + 255 */
-		"  "LHI"  %3,-4096\n"
+		"   lghi  %3,-4096\n"
 		"   nr    %4,%3\n"	/* %4 = (ptr + 255) & -4096 */
-		"  "SLR"  %4,%1\n"
-		"  "CLR"  %0,%4\n"	/* copy crosses next page boundary? */
+		"   slgr  %4,%1\n"
+		"   clgr  %0,%4\n"	/* copy crosses next page boundary? */
 		"   jnh   6f\n"
 		"4: mvcs  0(%4,%1),0(%2),%3\n"
-		"9:"SLR"  %0,%4\n"
+		"9: slgr  %0,%4\n"
 		"   j     6f\n"
-		"5:"SLR"  %0,%0\n"
+		"5: slgr  %0,%0\n"
 		"6: sacf  768\n"
 		EX_TABLE(0b,3b) EX_TABLE(2b,3b) EX_TABLE(4b,6b)
 		EX_TABLE(7b,3b) EX_TABLE(8b,3b) EX_TABLE(9b,6b)
@@ -208,11 +194,11 @@ static inline unsigned long copy_in_user_mvcos(void __user *to, const void __use
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%1),0(%2),0\n"
 		"   jz	  2f\n"
-		"1:"ALR"  %0,%3\n"
-		"  "SLR"  %1,%3\n"
-		"  "SLR"  %2,%3\n"
+		"1: algr  %0,%3\n"
+		"   slgr  %1,%3\n"
+		"   slgr  %2,%3\n"
 		"   j	  0b\n"
-		"2:"SLR"  %0,%0\n"
+		"2:slgr  %0,%0\n"
 		"3: \n"
 		EX_TABLE(0b,3b)
 		: "+a" (size), "+a" (to), "+a" (from), "+a" (tmp1), "=a" (tmp2)
@@ -228,23 +214,23 @@ static inline unsigned long copy_in_user_mvc(void __user *to, const void __user
 	load_kernel_asce();
 	asm volatile(
 		"   sacf  256\n"
-		"  "AHI"  %0,-1\n"
+		"   aghi  %0,-1\n"
 		"   jo	  5f\n"
 		"   bras  %3,3f\n"
-		"0:"AHI"  %0,257\n"
+		"0: aghi  %0,257\n"
 		"1: mvc	  0(1,%1),0(%2)\n"
 		"   la	  %1,1(%1)\n"
 		"   la	  %2,1(%2)\n"
-		"  "AHI"  %0,-1\n"
+		"   aghi  %0,-1\n"
 		"   jnz	  1b\n"
 		"   j	  5f\n"
 		"2: mvc	  0(256,%1),0(%2)\n"
 		"   la	  %1,256(%1)\n"
 		"   la	  %2,256(%2)\n"
-		"3:"AHI"  %0,-256\n"
+		"3: aghi  %0,-256\n"
 		"   jnm	  2b\n"
 		"4: ex	  %0,1b-0b(%3)\n"
-		"5: "SLR"  %0,%0\n"
+		"5: slgr  %0,%0\n"
 		"6: sacf  768\n"
 		EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
 		: "+a" (size), "+a" (to), "+a" (from), "=a" (tmp1)
@@ -269,18 +255,18 @@ static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size
 	asm volatile(
 		"0: .insn ss,0xc80000000000,0(%0,%1),0(%4),0\n"
 		"   jz	  4f\n"
-		"1:"ALR"  %0,%2\n"
-		"  "SLR"  %1,%2\n"
+		"1: algr  %0,%2\n"
+		"   slgr  %1,%2\n"
 		"   j	  0b\n"
 		"2: la	  %3,4095(%1)\n"/* %4 = to + 4095 */
 		"   nr	  %3,%2\n"	/* %4 = (to + 4095) & -4096 */
-		"  "SLR"  %3,%1\n"
-		"  "CLR"  %0,%3\n"	/* copy crosses next page boundary? */
+		"   slgr  %3,%1\n"
+		"   clgr  %0,%3\n"	/* copy crosses next page boundary? */
 		"   jnh	  5f\n"
 		"3: .insn ss,0xc80000000000,0(%3,%1),0(%4),0\n"
-		"  "SLR"  %0,%3\n"
+		"   slgr  %0,%3\n"
 		"   j	  5f\n"
-		"4:"SLR"  %0,%0\n"
+		"4:slgr  %0,%0\n"
 		"5:\n"
 		EX_TABLE(0b,2b) EX_TABLE(3b,5b)
 		: "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2)
@@ -295,28 +281,28 @@ static inline unsigned long clear_user_xc(void __user *to, unsigned long size)
 	load_kernel_asce();
 	asm volatile(
 		"   sacf  256\n"
-		"  "AHI"  %0,-1\n"
+		"   aghi  %0,-1\n"
 		"   jo    5f\n"
 		"   bras  %3,3f\n"
 		"   xc    0(1,%1),0(%1)\n"
-		"0:"AHI"  %0,257\n"
+		"0: aghi  %0,257\n"
 		"   la    %2,255(%1)\n" /* %2 = ptr + 255 */
 		"   srl   %2,12\n"
 		"   sll   %2,12\n"	/* %2 = (ptr + 255) & -4096 */
-		"  "SLR"  %2,%1\n"
-		"  "CLR"  %0,%2\n"	/* clear crosses next page boundary? */
+		"   slgr  %2,%1\n"
+		"   clgr  %0,%2\n"	/* clear crosses next page boundary? */
 		"   jnh   5f\n"
-		"  "AHI"  %2,-1\n"
+		"   aghi  %2,-1\n"
 		"1: ex    %2,0(%3)\n"
-		"  "AHI"  %2,1\n"
-		"  "SLR"  %0,%2\n"
+		"   aghi  %2,1\n"
+		"   slgr  %0,%2\n"
 		"   j     5f\n"
 		"2: xc    0(256,%1),0(%1)\n"
 		"   la    %1,256(%1)\n"
-		"3:"AHI"  %0,-256\n"
+		"3: aghi  %0,-256\n"
 		"   jnm   2b\n"
 		"4: ex    %0,0(%3)\n"
-		"5: "SLR"  %0,%0\n"
+		"5: slgr  %0,%0\n"
 		"6: sacf  768\n"
 		EX_TABLE(1b,6b) EX_TABLE(2b,0b) EX_TABLE(4b,0b)
 		: "+a" (size), "+a" (to), "=a" (tmp1), "=a" (tmp2)
@@ -341,12 +327,12 @@ static inline unsigned long strnlen_user_srst(const char __user *src,
 	asm volatile(
 		"   la    %2,0(%1)\n"
 		"   la    %3,0(%0,%1)\n"
-		"  "SLR"  %0,%0\n"
+		"   slgr  %0,%0\n"
 		"   sacf  256\n"
 		"0: srst  %3,%2\n"
 		"   jo    0b\n"
 		"   la    %0,1(%3)\n"	/* strnlen_user results includes \0 */
-		"  "SLR"  %0,%1\n"
+		"   slgr  %0,%1\n"
 		"1: sacf  768\n"
 		EX_TABLE(0b,1b)
 		: "+a" (size), "+a" (src), "=a" (tmp1), "=a" (tmp2)
@@ -399,7 +385,7 @@ early_param("uaccess_primary", parse_uaccess_pt);
 
 static int __init uaccess_init(void)
 {
-	if (IS_ENABLED(CONFIG_64BIT) && !uaccess_primary && test_facility(27))
+	if (!uaccess_primary && test_facility(27))
 		static_key_slow_inc(&have_mvcos);
 	return 0;
 }