Merge tag 'v5.9-rc5' into asoc-5.10

Linux 5.9-rc5

34 files changed, 295 insertions, 155 deletions

diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index ac0c7299d5b8..dd74503f7e5e 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -117,11 +117,18 @@ static inline bool bvec_iter_advance(const struct bio_vec *bv,
 	return true;
 }
 
+static inline void bvec_iter_skip_zero_bvec(struct bvec_iter *iter)
+{
+	iter->bi_bvec_done = 0;
+	iter->bi_idx++;
+}
+
 #define for_each_bvec(bvl, bio_vec, iter, start)			\
 	for (iter = (start);						\
 	     (iter).bi_size &&						\
 		((bvl = bvec_iter_bvec((bio_vec), (iter))), 1);	\
-	     bvec_iter_advance((bio_vec), &(iter), (bvl).bv_len))
+	     (bvl).bv_len ? (void)bvec_iter_advance((bio_vec), &(iter),	\
+		     (bvl).bv_len) : bvec_iter_skip_zero_bvec(&(iter)))
 
 /* for iterating one bio from start to end */
 #define BVEC_ITER_ALL_INIT (struct bvec_iter)				\
diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h
index fcd84e8d88f4..999636d53cf2 100644
--- a/include/linux/ceph/ceph_features.h
+++ b/include/linux/ceph/ceph_features.h
@@ -11,14 +11,14 @@
 #define CEPH_FEATURE_INCARNATION_2 (1ull<<57) // CEPH_FEATURE_SERVER_JEWEL
 
 #define DEFINE_CEPH_FEATURE(bit, incarnation, name)			\
-	static const uint64_t CEPH_FEATURE_##name = (1ULL<<bit);		\
-	static const uint64_t CEPH_FEATUREMASK_##name =			\
+	static const uint64_t __maybe_unused CEPH_FEATURE_##name = (1ULL<<bit);		\
+	static const uint64_t __maybe_unused CEPH_FEATUREMASK_##name =			\
 		(1ULL<<bit | CEPH_FEATURE_INCARNATION_##incarnation);
 
 /* this bit is ignored but still advertised by release *when* */
 #define DEFINE_CEPH_FEATURE_DEPRECATED(bit, incarnation, name, when) \
-	static const uint64_t DEPRECATED_CEPH_FEATURE_##name = (1ULL<<bit); \
-	static const uint64_t DEPRECATED_CEPH_FEATUREMASK_##name =		\
+	static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATURE_##name = (1ULL<<bit);	\
+	static const uint64_t __maybe_unused DEPRECATED_CEPH_FEATUREMASK_##name =		\
 		(1ULL<<bit | CEPH_FEATURE_INCARNATION_##incarnation);
 
 /*
diff --git a/include/linux/compat.h b/include/linux/compat.h
index d38c4d7e83bd..b354ce58966e 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -429,11 +429,11 @@ put_compat_sigset(compat_sigset_t __user *compat, const sigset_t *set,
 	compat_sigset_t v;
 	switch (_NSIG_WORDS) {
 	case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
-		/* fall through */
+		fallthrough;
 	case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
-		/* fall through */
+		fallthrough;
 	case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
-		/* fall through */
+		fallthrough;
 	case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0];
 	}
 	return copy_to_user(compat, &v, size) ? -EFAULT : 0;
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index 6122efdad6ad..ea7b756b1c8f 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -22,14 +22,8 @@
 
 /*
  * __has_attribute is supported on gcc >= 5, clang >= 2.9 and icc >= 17.
- * In the meantime, to support 4.6 <= gcc < 5, we implement __has_attribute
+ * In the meantime, to support gcc < 5, we implement __has_attribute
  * by hand.
- *
- * sparse does not support __has_attribute (yet) and defines __GNUC_MINOR__
- * depending on the compiler used to build it; however, these attributes have
- * no semantic effects for sparse, so it does not matter. Also note that,
- * in order to avoid sparse's warnings, even the unsupported ones must be
- * defined to 0.
  */
 #ifndef __has_attribute
 # define __has_attribute(x) __GCC4_has_attribute_##x
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 4b33cb385f96..6e390d58a9f8 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -11,8 +11,8 @@
 # define __iomem	__attribute__((noderef, address_space(__iomem)))
 # define __percpu	__attribute__((noderef, address_space(__percpu)))
 # define __rcu		__attribute__((noderef, address_space(__rcu)))
-extern void __chk_user_ptr(const volatile void __user *);
-extern void __chk_io_ptr(const volatile void __iomem *);
+static inline void __chk_user_ptr(const volatile void __user *ptr) { }
+static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
 /* context/locking */
 # define __must_hold(x)	__attribute__((context(x,1,1)))
 # define __acquires(x)	__attribute__((context(x,0,1)))
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 8f141d4c859c..a911e5d06845 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -956,8 +956,8 @@ static inline int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
 	case CPUFREQ_RELATION_C:
 		return cpufreq_table_find_index_c(policy, target_freq);
 	default:
-		pr_err("%s: Invalid relation: %d\n", __func__, relation);
-		return -EINVAL;
+		WARN_ON_ONCE(1);
+		return 0;
 	}
 }
 
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index b65909ae4e20..75895e6363b8 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -75,12 +75,13 @@ struct cpuidle_state {
 };
 
 /* Idle State Flags */
-#define CPUIDLE_FLAG_NONE       (0x00)
-#define CPUIDLE_FLAG_POLLING	BIT(0) /* polling state */
-#define CPUIDLE_FLAG_COUPLED	BIT(1) /* state applies to multiple cpus */
-#define CPUIDLE_FLAG_TIMER_STOP BIT(2) /* timer is stopped on this state */
-#define CPUIDLE_FLAG_UNUSABLE	BIT(3) /* avoid using this state */
-#define CPUIDLE_FLAG_OFF	BIT(4) /* disable this state by default */
+#define CPUIDLE_FLAG_NONE       	(0x00)
+#define CPUIDLE_FLAG_POLLING		BIT(0) /* polling state */
+#define CPUIDLE_FLAG_COUPLED		BIT(1) /* state applies to multiple cpus */
+#define CPUIDLE_FLAG_TIMER_STOP 	BIT(2) /* timer is stopped on this state */
+#define CPUIDLE_FLAG_UNUSABLE		BIT(3) /* avoid using this state */
+#define CPUIDLE_FLAG_OFF		BIT(4) /* disable this state by default */
+#define CPUIDLE_FLAG_TLB_FLUSHED	BIT(5) /* idle-state flushes TLBs */
 
 struct cpuidle_device_kobj;
 struct cpuidle_state_kobj;
diff --git a/include/linux/device.h b/include/linux/device.h
index ca18da4768e3..9e6ea8931a52 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -454,6 +454,7 @@ struct dev_links_info {
  * @pm_domain:	Provide callbacks that are executed during system suspend,
  * 		hibernation, system resume and during runtime PM transitions
  * 		along with subsystem-level and driver-level callbacks.
+ * @em_pd:	device's energy model performance domain
  * @pins:	For device pin management.
  *		See Documentation/driver-api/pinctl.rst for details.
  * @msi_list:	Hosts MSI descriptors
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index aa9ff9e1c0b3..8aa0c7c2608c 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -49,6 +49,10 @@ struct _ddebug {
 
 
 #if defined(CONFIG_DYNAMIC_DEBUG_CORE)
+
+/* exported for module authors to exercise >control */
+int dynamic_debug_exec_queries(const char *query, const char *modname);
+
 int ddebug_add_module(struct _ddebug *tab, unsigned int n,
 				const char *modname);
 extern int ddebug_remove_module(const char *mod_name);
@@ -105,7 +109,7 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
 	static_branch_unlikely(&descriptor.key.dd_key_false)
 #endif
 
-#else /* !HAVE_JUMP_LABEL */
+#else /* !CONFIG_JUMP_LABEL */
 
 #define _DPRINTK_KEY_INIT
 
@@ -117,7 +121,7 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
 	unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)
 #endif
 
-#endif
+#endif /* CONFIG_JUMP_LABEL */
 
 #define __dynamic_func_call(id, fmt, func, ...) do {	\
 	DEFINE_DYNAMIC_DEBUG_METADATA(id, fmt);		\
@@ -172,10 +176,11 @@ void __dynamic_ibdev_dbg(struct _ddebug *descriptor,
 				   KERN_DEBUG, prefix_str, prefix_type,	\
 				   rowsize, groupsize, buf, len, ascii)
 
-#else
+#else /* !CONFIG_DYNAMIC_DEBUG_CORE */
 
 #include <linux/string.h>
 #include <linux/errno.h>
+#include <linux/printk.h>
 
 static inline int ddebug_add_module(struct _ddebug *tab, unsigned int n,
 				    const char *modname)
@@ -210,6 +215,13 @@ static inline int ddebug_dyndbg_module_param_cb(char *param, char *val,
 		print_hex_dump(KERN_DEBUG, prefix_str, prefix_type,	\
 				rowsize, groupsize, buf, len, ascii);	\
 	} while (0)
-#endif
+
+static inline int dynamic_debug_exec_queries(const char *query, const char *modname)
+{
+	pr_warn("kernel not built with CONFIG_DYNAMIC_DEBUG_CORE\n");
+	return 0;
+}
+
+#endif /* !CONFIG_DYNAMIC_DEBUG_CORE */
 
 #endif
diff --git a/include/linux/efi_embedded_fw.h b/include/linux/efi_embedded_fw.h
index 57eac5241303..a97a12bb2c9e 100644
--- a/include/linux/efi_embedded_fw.h
+++ b/include/linux/efi_embedded_fw.h
@@ -8,8 +8,8 @@
 #define EFI_EMBEDDED_FW_PREFIX_LEN		8
 
 /*
- * This struct and efi_embedded_fw_list are private to the efi-embedded fw
- * implementation they are in this header for use by lib/test_firmware.c only!
+ * This struct is private to the efi-embedded fw implementation.
+ * They are in this header for use by lib/test_firmware.c only!
  */
 struct efi_embedded_fw {
 	struct list_head list;
@@ -18,8 +18,6 @@ struct efi_embedded_fw {
 	size_t length;
 };
 
-extern struct list_head efi_embedded_fw_list;
-
 /**
  * struct efi_embedded_fw_desc - This struct is used by the EFI embedded-fw
  *                               code to search for embedded firmwares.
diff --git a/include/linux/entry-common.h b/include/linux/entry-common.h
index efebbffcd5cc..159c7476b11b 100644
--- a/include/linux/entry-common.h
+++ b/include/linux/entry-common.h
@@ -110,15 +110,30 @@ static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs
 #endif
 
 /**
- * syscall_enter_from_user_mode - Check and handle work before invoking
- *				 a syscall
+ * syscall_enter_from_user_mode_prepare - Establish state and enable interrupts
  * @regs:	Pointer to currents pt_regs
- * @syscall:	The syscall number
  *
  * Invoked from architecture specific syscall entry code with interrupts
  * disabled. The calling code has to be non-instrumentable. When the
- * function returns all state is correct and the subsequent functions can be
- * instrumented.
+ * function returns all state is correct, interrupts are enabled and the
+ * subsequent functions can be instrumented.
+ *
+ * This handles lockdep, RCU (context tracking) and tracing state.
+ *
+ * This is invoked when there is extra architecture specific functionality
+ * to be done between establishing state and handling user mode entry work.
+ */
+void syscall_enter_from_user_mode_prepare(struct pt_regs *regs);
+
+/**
+ * syscall_enter_from_user_mode_work - Check and handle work before invoking
+ *				       a syscall
+ * @regs:	Pointer to currents pt_regs
+ * @syscall:	The syscall number
+ *
+ * Invoked from architecture specific syscall entry code with interrupts
+ * enabled after invoking syscall_enter_from_user_mode_prepare() and extra
+ * architecture specific work.
  *
  * Returns: The original or a modified syscall number
  *
@@ -127,12 +142,30 @@ static inline __must_check int arch_syscall_enter_tracehook(struct pt_regs *regs
  * syscall_set_return_value() first.  If neither of those are called and -1
  * is returned, then the syscall will fail with ENOSYS.
  *
- * The following functionality is handled here:
+ * It handles the following work items:
  *
- *  1) Establish state (lockdep, RCU (context tracking), tracing)
- *  2) TIF flag dependent invocations of arch_syscall_enter_tracehook(),
+ *  1) TIF flag dependent invocations of arch_syscall_enter_tracehook(),
  *     __secure_computing(), trace_sys_enter()
- *  3) Invocation of audit_syscall_entry()
+ *  2) Invocation of audit_syscall_entry()
+ */
+long syscall_enter_from_user_mode_work(struct pt_regs *regs, long syscall);
+
+/**
+ * syscall_enter_from_user_mode - Establish state and check and handle work
+ *				  before invoking a syscall
+ * @regs:	Pointer to currents pt_regs
+ * @syscall:	The syscall number
+ *
+ * Invoked from architecture specific syscall entry code with interrupts
+ * disabled. The calling code has to be non-instrumentable. When the
+ * function returns all state is correct, interrupts are enabled and the
+ * subsequent functions can be instrumented.
+ *
+ * This is combination of syscall_enter_from_user_mode_prepare() and
+ * syscall_enter_from_user_mode_work().
+ *
+ * Returns: The original or a modified syscall number. See
+ * syscall_enter_from_user_mode_work() for further explanation.
  */
 long syscall_enter_from_user_mode(struct pt_regs *regs, long syscall);
 
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 0a355b005bf4..ebfb7cfb65f1 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -1200,7 +1200,7 @@ static inline u16 bpf_anc_helper(const struct sock_filter *ftest)
 		BPF_ANCILLARY(RANDOM);
 		BPF_ANCILLARY(VLAN_TPID);
 		}
-		/* Fallthrough. */
+		fallthrough;
 	default:
 		return ftest->code;
 	}
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e019ea2f1347..7519ae003a08 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2132,6 +2132,10 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
  *
  * I_DONTCACHE		Evict inode as soon as it is not used anymore.
  *
+ * I_SYNC_QUEUED	Inode is queued in b_io or b_more_io writeback lists.
+ *			Used to detect that mark_inode_dirty() should not move
+ * 			inode between dirty lists.
+ *
  * Q: What is the difference between I_WILL_FREE and I_FREEING?
  */
 #define I_DIRTY_SYNC		(1 << 0)
@@ -2149,12 +2153,11 @@ static inline void kiocb_clone(struct kiocb *kiocb, struct kiocb *kiocb_src,
 #define I_DIO_WAKEUP		(1 << __I_DIO_WAKEUP)
 #define I_LINKABLE		(1 << 10)
 #define I_DIRTY_TIME		(1 << 11)
-#define __I_DIRTY_TIME_EXPIRED	12
-#define I_DIRTY_TIME_EXPIRED	(1 << __I_DIRTY_TIME_EXPIRED)
 #define I_WB_SWITCH		(1 << 13)
 #define I_OVL_INUSE		(1 << 14)
 #define I_CREATING		(1 << 15)
 #define I_DONTCACHE		(1 << 16)
+#define I_SYNC_QUEUED		(1 << 17)
 
 #define I_DIRTY_INODE (I_DIRTY_SYNC | I_DIRTY_DATASYNC)
 #define I_DIRTY (I_DIRTY_INODE | I_DIRTY_PAGES)
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 875f71132b14..c7044a14200e 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -959,34 +959,49 @@ static inline void hid_device_io_stop(struct hid_device *hid) {
  * @max: maximal valid usage->code to consider later (out parameter)
  * @type: input event type (EV_KEY, EV_REL, ...)
  * @c: code which corresponds to this usage and type
+ *
+ * The value pointed to by @bit will be set to NULL if either @type is
+ * an unhandled event type, or if @c is out of range for @type. This
+ * can be used as an error condition.
  */
 static inline void hid_map_usage(struct hid_input *hidinput,
 		struct hid_usage *usage, unsigned long **bit, int *max,
-		__u8 type, __u16 c)
+		__u8 type, unsigned int c)
 {
 	struct input_dev *input = hidinput->input;
-
-	usage->type = type;
-	usage->code = c;
+	unsigned long *bmap = NULL;
+	unsigned int limit = 0;
 
 	switch (type) {
 	case EV_ABS:
-		*bit = input->absbit;
-		*max = ABS_MAX;
+		bmap = input->absbit;
+		limit = ABS_MAX;
 		break;
 	case EV_REL:
-		*bit = input->relbit;
-		*max = REL_MAX;
+		bmap = input->relbit;
+		limit = REL_MAX;
 		break;
 	case EV_KEY:
-		*bit = input->keybit;
-		*max = KEY_MAX;
+		bmap = input->keybit;
+		limit = KEY_MAX;
 		break;
 	case EV_LED:
-		*bit = input->ledbit;
-		*max = LED_MAX;
+		bmap = input->ledbit;
+		limit = LED_MAX;
 		break;
 	}
+
+	if (unlikely(c > limit || !bmap)) {
+		pr_warn_ratelimited("%s: Invalid code %d type %d\n",
+				    input->name, c, type);
+		*bit = NULL;
+		return;
+	}
+
+	usage->type = type;
+	usage->code = c;
+	*max = limit;
+	*bit = bmap;
 }
 
 /**
@@ -1000,7 +1015,8 @@ static inline void hid_map_usage_clear(struct hid_input *hidinput,
 		__u8 type, __u16 c)
 {
 	hid_map_usage(hidinput, usage, bit, max, type, c);
-	clear_bit(c, *bit);
+	if (*bit)
+		clear_bit(usage->code, *bit);
 }
 
 /**
diff --git a/include/linux/i2c-algo-pca.h b/include/linux/i2c-algo-pca.h
index d03071732db4..7c522fdd9ea7 100644
--- a/include/linux/i2c-algo-pca.h
+++ b/include/linux/i2c-algo-pca.h
@@ -53,6 +53,20 @@
 #define I2C_PCA_CON_SI		0x08 /* Serial Interrupt */
 #define I2C_PCA_CON_CR		0x07 /* Clock Rate (MASK) */
 
+/**
+ * struct pca_i2c_bus_settings - The configured PCA i2c bus settings
+ * @mode: Configured i2c bus mode
+ * @tlow: Configured SCL LOW period
+ * @thi: Configured SCL HIGH period
+ * @clock_freq: The configured clock frequency
+ */
+struct pca_i2c_bus_settings {
+	int mode;
+	int tlow;
+	int thi;
+	int clock_freq;
+};
+
 struct i2c_algo_pca_data {
 	void 				*data;	/* private low level data */
 	void (*write_byte)		(void *data, int reg, int val);
@@ -64,6 +78,7 @@ struct i2c_algo_pca_data {
 	 * For PCA9665, use the frequency you want here. */
 	unsigned int			i2c_clock;
 	unsigned int			chip;
+	struct pca_i2c_bus_settings		bus_settings;
 };
 
 int i2c_pca_add_bus(struct i2c_adapter *);
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index bd5c55755447..3ed4e8771b64 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -49,17 +49,18 @@ struct irqtrace_events {
 DECLARE_PER_CPU(int, hardirqs_enabled);
 DECLARE_PER_CPU(int, hardirq_context);
 
-  extern void trace_hardirqs_on_prepare(void);
-  extern void trace_hardirqs_off_finish(void);
-  extern void trace_hardirqs_on(void);
-  extern void trace_hardirqs_off(void);
-# define lockdep_hardirq_context()	(this_cpu_read(hardirq_context))
+extern void trace_hardirqs_on_prepare(void);
+extern void trace_hardirqs_off_finish(void);
+extern void trace_hardirqs_on(void);
+extern void trace_hardirqs_off(void);
+
+# define lockdep_hardirq_context()	(raw_cpu_read(hardirq_context))
 # define lockdep_softirq_context(p)	((p)->softirq_context)
 # define lockdep_hardirqs_enabled()	(this_cpu_read(hardirqs_enabled))
 # define lockdep_softirqs_enabled(p)	((p)->softirqs_enabled)
 # define lockdep_hardirq_enter()			\
 do {							\
-	if (this_cpu_inc_return(hardirq_context) == 1)	\
+	if (__this_cpu_inc_return(hardirq_context) == 1)\
 		current->hardirq_threaded = 0;		\
 } while (0)
 # define lockdep_hardirq_threaded()		\
@@ -68,7 +69,7 @@ do {						\
 } while (0)
 # define lockdep_hardirq_exit()			\
 do {						\
-	this_cpu_dec(hardirq_context);		\
+	__this_cpu_dec(hardirq_context);	\
 } while (0)
 # define lockdep_softirq_enter()		\
 do {						\
@@ -120,17 +121,17 @@ do {						\
 #else
 # define trace_hardirqs_on_prepare()		do { } while (0)
 # define trace_hardirqs_off_finish()		do { } while (0)
-# define trace_hardirqs_on()		do { } while (0)
-# define trace_hardirqs_off()		do { } while (0)
-# define lockdep_hardirq_context()	0
-# define lockdep_softirq_context(p)	0
-# define lockdep_hardirqs_enabled()	0
-# define lockdep_softirqs_enabled(p)	0
-# define lockdep_hardirq_enter()	do { } while (0)
-# define lockdep_hardirq_threaded()	do { } while (0)
-# define lockdep_hardirq_exit()		do { } while (0)
-# define lockdep_softirq_enter()	do { } while (0)
-# define lockdep_softirq_exit()		do { } while (0)
+# define trace_hardirqs_on()			do { } while (0)
+# define trace_hardirqs_off()			do { } while (0)
+# define lockdep_hardirq_context()		0
+# define lockdep_softirq_context(p)		0
+# define lockdep_hardirqs_enabled()		0
+# define lockdep_softirqs_enabled(p)		0
+# define lockdep_hardirq_enter()		do { } while (0)
+# define lockdep_hardirq_threaded()		do { } while (0)
+# define lockdep_hardirq_exit()			do { } while (0)
+# define lockdep_softirq_enter()		do { } while (0)
+# define lockdep_softirq_exit()			do { } while (0)
 # define lockdep_hrtimer_enter(__hrtimer)	false
 # define lockdep_hrtimer_exit(__context)	do { } while (0)
 # define lockdep_posixtimer_enter()		do { } while (0)
@@ -181,26 +182,33 @@ do {						\
  * if !TRACE_IRQFLAGS.
  */
 #ifdef CONFIG_TRACE_IRQFLAGS
-#define local_irq_enable() \
-	do { trace_hardirqs_on(); raw_local_irq_enable(); } while (0)
-#define local_irq_disable() \
-	do { raw_local_irq_disable(); trace_hardirqs_off(); } while (0)
+
+#define local_irq_enable()				\
+	do {						\
+		trace_hardirqs_on();			\
+		raw_local_irq_enable();			\
+	} while (0)
+
+#define local_irq_disable()				\
+	do {						\
+		bool was_disabled = raw_irqs_disabled();\
+		raw_local_irq_disable();		\
+		if (!was_disabled)			\
+			trace_hardirqs_off();		\
+	} while (0)
+
 #define local_irq_save(flags)				\
 	do {						\
 		raw_local_irq_save(flags);		\
-		trace_hardirqs_off();			\
+		if (!raw_irqs_disabled_flags(flags))	\
+			trace_hardirqs_off();		\
 	} while (0)
 
-
 #define local_irq_restore(flags)			\
 	do {						\
-		if (raw_irqs_disabled_flags(flags)) {	\
-			raw_local_irq_restore(flags);	\
-			trace_hardirqs_off();		\
-		} else {				\
+		if (!raw_irqs_disabled_flags(flags))	\
 			trace_hardirqs_on();		\
-			raw_local_irq_restore(flags);	\
-		}					\
+		raw_local_irq_restore(flags);		\
 	} while (0)
 
 #define safe_halt()				\
@@ -214,10 +222,7 @@ do {						\
 
 #define local_irq_enable()	do { raw_local_irq_enable(); } while (0)
 #define local_irq_disable()	do { raw_local_irq_disable(); } while (0)
-#define local_irq_save(flags)					\
-	do {							\
-		raw_local_irq_save(flags);			\
-	} while (0)
+#define local_irq_save(flags)	do { raw_local_irq_save(flags); } while (0)
 #define local_irq_restore(flags) do { raw_local_irq_restore(flags); } while (0)
 #define safe_halt()		do { raw_safe_halt(); } while (0)
 
diff --git a/include/linux/jhash.h b/include/linux/jhash.h
index 19ddd43aee68..cfb62e9f37be 100644
--- a/include/linux/jhash.h
+++ b/include/linux/jhash.h
@@ -86,17 +86,17 @@ static inline u32 jhash(const void *key, u32 length, u32 initval)
 	}
 	/* Last block: affect all 32 bits of (c) */
 	switch (length) {
-	case 12: c += (u32)k[11]<<24;	/* fall through */
-	case 11: c += (u32)k[10]<<16;	/* fall through */
-	case 10: c += (u32)k[9]<<8;	/* fall through */
-	case 9:  c += k[8];		/* fall through */
-	case 8:  b += (u32)k[7]<<24;	/* fall through */
-	case 7:  b += (u32)k[6]<<16;	/* fall through */
-	case 6:  b += (u32)k[5]<<8;	/* fall through */
-	case 5:  b += k[4];		/* fall through */
-	case 4:  a += (u32)k[3]<<24;	/* fall through */
-	case 3:  a += (u32)k[2]<<16;	/* fall through */
-	case 2:  a += (u32)k[1]<<8;	/* fall through */
+	case 12: c += (u32)k[11]<<24;	fallthrough;
+	case 11: c += (u32)k[10]<<16;	fallthrough;
+	case 10: c += (u32)k[9]<<8;	fallthrough;
+	case 9:  c += k[8];		fallthrough;
+	case 8:  b += (u32)k[7]<<24;	fallthrough;
+	case 7:  b += (u32)k[6]<<16;	fallthrough;
+	case 6:  b += (u32)k[5]<<8;	fallthrough;
+	case 5:  b += k[4];		fallthrough;
+	case 4:  a += (u32)k[3]<<24;	fallthrough;
+	case 3:  a += (u32)k[2]<<16;	fallthrough;
+	case 2:  a += (u32)k[1]<<8;	fallthrough;
 	case 1:  a += k[0];
 		 __jhash_final(a, b, c);
 	case 0: /* Nothing left to add */
@@ -132,8 +132,8 @@ static inline u32 jhash2(const u32 *k, u32 length, u32 initval)
 
 	/* Handle the last 3 u32's */
 	switch (length) {
-	case 3: c += k[2];	/* fall through */
-	case 2: b += k[1];	/* fall through */
+	case 3: c += k[2];	fallthrough;
+	case 2: b += k[1];	fallthrough;
 	case 1: a += k[0];
 		__jhash_final(a, b, c);
 	case 0:	/* Nothing left to add */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 500def620d8f..c25b8e41c0ea 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -186,7 +186,7 @@
  * lower_32_bits - return bits 0-31 of a number
  * @n: the number we're accessing
  */
-#define lower_32_bits(n) ((u32)(n))
+#define lower_32_bits(n) ((u32)((n) & 0xffffffff))
 
 struct completion;
 struct pt_regs;
diff --git a/include/linux/ksm.h b/include/linux/ksm.h
index e48b1e453ff5..161e8164abcf 100644
--- a/include/linux/ksm.h
+++ b/include/linux/ksm.h
@@ -53,8 +53,6 @@ struct page *ksm_might_need_to_copy(struct page *page,
 
 void rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc);
 void ksm_migrate_page(struct page *newpage, struct page *oldpage);
-bool reuse_ksm_page(struct page *page,
-			struct vm_area_struct *vma, unsigned long address);
 
 #else  /* !CONFIG_KSM */
 
@@ -88,11 +86,6 @@ static inline void rmap_walk_ksm(struct page *page,
 static inline void ksm_migrate_page(struct page *newpage, struct page *oldpage)
 {
 }
-static inline bool reuse_ksm_page(struct page *page,
-			struct vm_area_struct *vma, unsigned long address)
-{
-	return false;
-}
 #endif /* CONFIG_MMU */
 #endif /* !CONFIG_KSM */
 
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a23076765b4c..05e3c2fb3ef7 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -749,25 +749,46 @@ int kvm_write_guest_offset_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
 int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
 			      gpa_t gpa, unsigned long len);
 
-#define __kvm_put_guest(kvm, gfn, offset, value, type)			\
+#define __kvm_get_guest(kvm, gfn, offset, v)				\
 ({