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

Pull locking and misc x86 updates from Ingo Molnar:
 "Lots of changes in this cycle - in part because locking/core attracted
  a number of related x86 low level work which was easier to handle in a
  single tree:

   - Linux Kernel Memory Consistency Model updates (Alan Stern, Paul E.
     McKenney, Andrea Parri)

   - lockdep scalability improvements and micro-optimizations (Waiman
     Long)

   - rwsem improvements (Waiman Long)

   - spinlock micro-optimization (Matthew Wilcox)

   - qspinlocks: Provide a liveness guarantee (more fairness) on x86.
     (Peter Zijlstra)

   - Add support for relative references in jump tables on arm64, x86
     and s390 to optimize jump labels (Ard Biesheuvel, Heiko Carstens)

   - Be a lot less permissive on weird (kernel address) uaccess faults
     on x86: BUG() when uaccess helpers fault on kernel addresses (Jann
     Horn)

   - macrofy x86 asm statements to un-confuse the GCC inliner. (Nadav
     Amit)

   - ... and a handful of other smaller changes as well"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (57 commits)
  locking/lockdep: Make global debug_locks* variables read-mostly
  locking/lockdep: Fix debug_locks off performance problem
  locking/pvqspinlock: Extend node size when pvqspinlock is configured
  locking/qspinlock_stat: Count instances of nested lock slowpaths
  locking/qspinlock, x86: Provide liveness guarantee
  x86/asm: 'Simplify' GEN_*_RMWcc() macros
  locking/qspinlock: Rework some comments
  locking/qspinlock: Re-order code
  locking/lockdep: Remove duplicated 'lock_class_ops' percpu array
  x86/defconfig: Enable CONFIG_USB_XHCI_HCD=y
  futex: Replace spin_is_locked() with lockdep
  locking/lockdep: Make class->ops a percpu counter and move it under CONFIG_DEBUG_LOCKDEP=y
  x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs
  x86/cpufeature: Macrofy inline assembly code to work around GCC inlining bugs
  x86/extable: Macrofy inline assembly code to work around GCC inlining bugs
  x86/paravirt: Work around GCC inlining bugs when compiling paravirt ops
  x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs
  x86/alternatives: Macrofy lock prefixes to work around GCC inlining bugs
  x86/refcount: Work around GCC inlining bug
  x86/objtool: Use asm macros to work around GCC inlining bugs
  ...

1 files changed, 11 insertions, 11 deletions

diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index aae77eb8491c..b5e58cc0c5e7 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -198,8 +198,8 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
 		     "4:	movl %3,%0\n"				\
 		     "	jmp 3b\n"					\
 		     ".previous\n"					\
-		     _ASM_EXTABLE(1b, 4b)				\
-		     _ASM_EXTABLE(2b, 4b)				\
+		     _ASM_EXTABLE_UA(1b, 4b)				\
+		     _ASM_EXTABLE_UA(2b, 4b)				\
 		     : "=r" (err)					\
 		     : "A" (x), "r" (addr), "i" (errret), "0" (err))
 
@@ -340,8 +340,8 @@ do {									\
 		     "	xorl %%edx,%%edx\n"				\
 		     "	jmp 3b\n"					\
 		     ".previous\n"					\
-		     _ASM_EXTABLE(1b, 4b)				\
-		     _ASM_EXTABLE(2b, 4b)				\
+		     _ASM_EXTABLE_UA(1b, 4b)				\
+		     _ASM_EXTABLE_UA(2b, 4b)				\
 		     : "=r" (retval), "=&A"(x)				\
 		     : "m" (__m(__ptr)), "m" __m(((u32 __user *)(__ptr)) + 1),	\
 		       "i" (errret), "0" (retval));			\
@@ -386,7 +386,7 @@ do {									\
 		     "	xor"itype" %"rtype"1,%"rtype"1\n"		\
 		     "	jmp 2b\n"					\
 		     ".previous\n"					\
-		     _ASM_EXTABLE(1b, 3b)				\
+		     _ASM_EXTABLE_UA(1b, 3b)				\
 		     : "=r" (err), ltype(x)				\
 		     : "m" (__m(addr)), "i" (errret), "0" (err))
 
@@ -398,7 +398,7 @@ do {									\
 		     "3:	mov %3,%0\n"				\
 		     "	jmp 2b\n"					\
 		     ".previous\n"					\
-		     _ASM_EXTABLE(1b, 3b)				\
+		     _ASM_EXTABLE_UA(1b, 3b)				\
 		     : "=r" (err), ltype(x)				\
 		     : "m" (__m(addr)), "i" (errret), "0" (err))
 
@@ -474,7 +474,7 @@ struct __large_struct { unsigned long buf[100]; };
 		     "3:	mov %3,%0\n"				\
 		     "	jmp 2b\n"					\
 		     ".previous\n"					\
-		     _ASM_EXTABLE(1b, 3b)				\
+		     _ASM_EXTABLE_UA(1b, 3b)				\
 		     : "=r"(err)					\
 		     : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err))
 
@@ -602,7 +602,7 @@ extern void __cmpxchg_wrong_size(void)
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
-			_ASM_EXTABLE(1b, 3b)				\
+			_ASM_EXTABLE_UA(1b, 3b)				\
 			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
 			: "i" (-EFAULT), "q" (__new), "1" (__old)	\
 			: "memory"					\
@@ -618,7 +618,7 @@ extern void __cmpxchg_wrong_size(void)
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
-			_ASM_EXTABLE(1b, 3b)				\
+			_ASM_EXTABLE_UA(1b, 3b)				\
 			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
 			: "i" (-EFAULT), "r" (__new), "1" (__old)	\
 			: "memory"					\
@@ -634,7 +634,7 @@ extern void __cmpxchg_wrong_size(void)
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
-			_ASM_EXTABLE(1b, 3b)				\
+			_ASM_EXTABLE_UA(1b, 3b)				\
 			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
 			: "i" (-EFAULT), "r" (__new), "1" (__old)	\
 			: "memory"					\
@@ -653,7 +653,7 @@ extern void __cmpxchg_wrong_size(void)
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
-			_ASM_EXTABLE(1b, 3b)				\
+			_ASM_EXTABLE_UA(1b, 3b)				\
 			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
 			: "i" (-EFAULT), "r" (__new), "1" (__old)	\
 			: "memory"					\