Merge tag 's390-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - fix buffer size for in-kernel disassembler for ebpf programs.

 - fix two memory leaks in zcrypt driver.

 - expose PCI device UID as index, including an indicator if the uid is
   unique.

 - remove some oprofile leftovers.

 - improve stack unwinder tests.

 - don't use gcc atomic builtins anymore, just like all other
   architectures. Even though I'm sure the current code is ok, I totally
   dislike that s390 is the only architecture being special here;
   especially considering that there was a lengthly discussion about
   this topic and the outcome was not to use the builtins. Therefore
   open-code atomic ops again with inline assembly and switch to gcc
   builtins as soon as other architectures are doing.

 - couple of other changes to atomic and cmpxchg, and use
   atomic-instrumented.h for KASAN.

 - separate zbus creation, registration, and scanning in our PCI code
   which allows for cleaner and easier handling.

 - a rather large change to the vfio-ap code to fix circular locking
   dependencies when updating crypto masks.

 - move QAOB handling from qdio layer down to drivers.

 - add CRW inject facility to common I/O layer. This adds debugs files
   which allow to generate artificial events from user space for testing
   purposes.

 - increase SCLP console line length from 80 to 320 characters to avoid
   odd wrapped lines.

 - add protected virtualization guest and host indication files, which
   indicate either that a guest is running in pv mode or if the
   hypervisor is capable of starting pv guests.

 - various other small fixes and improvements all over the place.

* tag 's390-5.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (53 commits)
  s390/disassembler: increase ebpf disasm buffer size
  s390/archrandom: add parameter check for s390_arch_random_generate
  s390/zcrypt: fix zcard and zqueue hot-unplug memleak
  s390/pci: expose a PCI device's UID as its index
  s390/atomic,cmpxchg: always inline __xchg/__cmpxchg
  s390/smp: fix do_restart() prototype
  s390: get rid of oprofile leftovers
  s390/atomic,cmpxchg: make constraints work with old compilers
  s390/test_unwind: print test suite start/end info
  s390/cmpxchg: use unsigned long values instead of void pointers
  s390/test_unwind: add WARN if tests failed
  s390/test_unwind: unify error handling paths
  s390: update defconfigs
  s390/spinlock: use R constraint in inline assembly
  s390/atomic,cmpxchg: switch to use atomic-instrumented.h
  s390/cmpxchg: get rid of gcc atomic builtins
  s390/atomic: get rid of gcc atomic builtins
  s390/atomic: use proper constraints
  s390/atomic: move remaining inline assemblies to atomic_ops.h
  s390/bitops: make bitops only work on longs
  ...

1 files changed, 47 insertions, 46 deletions

diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 31121d32f81d..68da67d2c4c9 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -42,7 +42,7 @@
 #define __BITOPS_WORDS(bits) (((bits) + BITS_PER_LONG - 1) / BITS_PER_LONG)
 
 static inline unsigned long *
-__bitops_word(unsigned long nr, volatile unsigned long *ptr)
+__bitops_word(unsigned long nr, const volatile unsigned long *ptr)
 {
 	unsigned long addr;
 
@@ -50,37 +50,33 @@ __bitops_word(unsigned long nr, volatile unsigned long *ptr)
 	return (unsigned long *)addr;
 }
 
-static inline unsigned char *
-__bitops_byte(unsigned long nr, volatile unsigned long *ptr)
+static inline unsigned long __bitops_mask(unsigned long nr)
 {
-	return ((unsigned char *)ptr) + ((nr ^ (BITS_PER_LONG - 8)) >> 3);
+	return 1UL << (nr & (BITS_PER_LONG - 1));
 }
 
 static __always_inline void arch_set_bit(unsigned long nr, volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
-	unsigned long mask;
+	unsigned long mask = __bitops_mask(nr);
 
-	mask = 1UL << (nr & (BITS_PER_LONG - 1));
 	__atomic64_or(mask, (long *)addr);
 }
 
 static __always_inline void arch_clear_bit(unsigned long nr, volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
-	unsigned long mask;
+	unsigned long mask = __bitops_mask(nr);
 
-	mask = ~(1UL << (nr & (BITS_PER_LONG - 1)));
-	__atomic64_and(mask, (long *)addr);
+	__atomic64_and(~mask, (long *)addr);
 }
 
 static __always_inline void arch_change_bit(unsigned long nr,
 					    volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
-	unsigned long mask;
+	unsigned long mask = __bitops_mask(nr);
 
-	mask = 1UL << (nr & (BITS_PER_LONG - 1));
 	__atomic64_xor(mask, (long *)addr);
 }
 
@@ -88,99 +84,104 @@ static inline bool arch_test_and_set_bit(unsigned long nr,
 					 volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
-	unsigned long old, mask;
+	unsigned long mask = __bitops_mask(nr);
+	unsigned long old;
 
-	mask = 1UL << (nr & (BITS_PER_LONG - 1));
 	old = __atomic64_or_barrier(mask, (long *)addr);
-	return (old & mask) != 0;
+	return old & mask;
 }
 
 static inline bool arch_test_and_clear_bit(unsigned long nr,
 					   volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
-	unsigned long old, mask;
+	unsigned long mask = __bitops_mask(nr);
+	unsigned long old;
 
-	mask = ~(1UL << (nr & (BITS_PER_LONG - 1)));
-	old = __atomic64_and_barrier(mask, (long *)addr);
-	return (old & ~mask) != 0;
+	old = __atomic64_and_barrier(~mask, (long *)addr);
+	return old & mask;
 }
 
 static inline bool arch_test_and_change_bit(unsigned long nr,
 					    volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
-	unsigned long old, mask;
+	unsigned long mask = __bitops_mask(nr);
+	unsigned long old;
 
-	mask = 1UL << (nr & (BITS_PER_LONG - 1));
 	old = __atomic64_xor_barrier(mask, (long *)addr);
-	return (old & mask) != 0;
+	return old & mask;
 }
 
 static inline void arch___set_bit(unsigned long nr, volatile unsigned long *ptr)
 {
-	unsigned char *addr = __bitops_byte(nr, ptr);
+	unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
 
-	*addr |= 1 << (nr & 7);
+	*addr |= mask;
 }
 
 static inline void arch___clear_bit(unsigned long nr,
 				    volatile unsigned long *ptr)
 {
-	unsigned char *addr = __bitops_byte(nr, ptr);
+	unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
 
-	*addr &= ~(1 << (nr & 7));
+	*addr &= ~mask;
 }
 
 static inline void arch___change_bit(unsigned long nr,
 				     volatile unsigned long *ptr)
 {
-	unsigned char *addr = __bitops_byte(nr, ptr);
+	unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
 
-	*addr ^= 1 << (nr & 7);
+	*addr ^= mask;
 }
 
 static inline bool arch___test_and_set_bit(unsigned long nr,
 					   volatile unsigned long *ptr)
 {
-	unsigned char *addr = __bitops_byte(nr, ptr);
-	unsigned char ch;
+	unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
+	unsigned long old;
 
-	ch = *addr;
-	*addr |= 1 << (nr & 7);
-	return (ch >> (nr & 7)) & 1;
+	old = *addr;
+	*addr |= mask;
+	return old & mask;
 }
 
 static inline bool arch___test_and_clear_bit(unsigned long nr,
 					     volatile unsigned long *ptr)
 {
-	unsigned char *addr = __bitops_byte(nr, ptr);
-	unsigned char ch;
+	unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
+	unsigned long old;
 
-	ch = *addr;
-	*addr &= ~(1 << (nr & 7));
-	return (ch >> (nr & 7)) & 1;
+	old = *addr;
+	*addr &= ~mask;
+	return old & mask;
 }
 
 static inline bool arch___test_and_change_bit(unsigned long nr,
 					      volatile unsigned long *ptr)
 {
-	unsigned char *addr = __bitops_byte(nr, ptr);
-	unsigned char ch;
+	unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
+	unsigned long old;
 
-	ch = *addr;
-	*addr ^= 1 << (nr & 7);
-	return (ch >> (nr & 7)) & 1;
+	old = *addr;
+	*addr ^= mask;
+	return old & mask;
 }
 
 static inline bool arch_test_bit(unsigned long nr,
 				 const volatile unsigned long *ptr)
 {
-	const volatile unsigned char *addr;
+	const volatile unsigned long *addr = __bitops_word(nr, ptr);
+	unsigned long mask = __bitops_mask(nr);
 
-	addr = ((const volatile unsigned char *)ptr);
-	addr += (nr ^ (BITS_PER_LONG - 8)) >> 3;
-	return (*addr >> (nr & 7)) & 1;
+	return *addr & mask;
 }
 
 static inline bool arch_test_and_set_bit_lock(unsigned long nr,