Merge tag 'noinstr-x86-kvm-2020-05-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into HEAD

32 files changed, 175 insertions, 141 deletions

diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
index 26f0ecf401ea..0bbfd647f5c6 100644
--- a/include/linux/amba/bus.h
+++ b/include/linux/amba/bus.h
@@ -65,6 +65,7 @@ struct amba_device {
 	struct device		dev;
 	struct resource		res;
 	struct clk		*pclk;
+	struct device_dma_parameters dma_parms;
 	unsigned int		periphid;
 	unsigned int		cid;
 	struct amba_cs_uci_id	uci;
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h
index 4fc87dee005a..7367150f962a 100644
--- a/include/linux/backing-dev-defs.h
+++ b/include/linux/backing-dev-defs.h
@@ -54,7 +54,6 @@ enum wb_reason {
 	WB_REASON_SYNC,
 	WB_REASON_PERIODIC,
 	WB_REASON_LAPTOP_TIMER,
-	WB_REASON_FREE_MORE_MEM,
 	WB_REASON_FS_FREE_SPACE,
 	/*
 	 * There is no bdi forker thread any more and works are done
@@ -220,6 +219,7 @@ struct backing_dev_info {
 	wait_queue_head_t wb_waitq;
 
 	struct device *dev;
+	char dev_name[64];
 	struct device *owner;
 
 	struct timer_list laptop_mode_wb_timer;
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index f88197c1ffc2..c9ad5c3b7b4b 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -505,13 +505,6 @@ static inline int bdi_rw_congested(struct backing_dev_info *bdi)
 				  (1 << WB_async_congested));
 }
 
-extern const char *bdi_unknown_name;
-
-static inline const char *bdi_dev_name(struct backing_dev_info *bdi)
-{
-	if (!bdi || !bdi->dev)
-		return bdi_unknown_name;
-	return dev_name(bdi->dev);
-}
+const char *bdi_dev_name(struct backing_dev_info *bdi);
 
 #endif	/* _LINUX_BACKING_DEV_H */
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 034b0a644efc..e9ead0505671 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -120,12 +120,65 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
 /* Annotate a C jump table to allow objtool to follow the code flow */
 #define __annotate_jump_table __section(.rodata..c_jump_table)
 
+#ifdef CONFIG_DEBUG_ENTRY
+/* Begin/end of an instrumentation safe region */
+#define instrumentation_begin() ({					\
+	asm volatile("%c0:\n\t"						\
+		     ".pushsection .discard.instr_begin\n\t"		\
+		     ".long %c0b - .\n\t"				\
+		     ".popsection\n\t" : : "i" (__COUNTER__));		\
+})
+
+/*
+ * Because instrumentation_{begin,end}() can nest, objtool validation considers
+ * _begin() a +1 and _end() a -1 and computes a sum over the instructions.
+ * When the value is greater than 0, we consider instrumentation allowed.
+ *
+ * There is a problem with code like:
+ *
+ * noinstr void foo()
+ * {
+ *	instrumentation_begin();
+ *	...
+ *	if (cond) {
+ *		instrumentation_begin();
+ *		...
+ *		instrumentation_end();
+ *	}
+ *	bar();
+ *	instrumentation_end();
+ * }
+ *
+ * If instrumentation_end() would be an empty label, like all the other
+ * annotations, the inner _end(), which is at the end of a conditional block,
+ * would land on the instruction after the block.
+ *
+ * If we then consider the sum of the !cond path, we'll see that the call to
+ * bar() is with a 0-value, even though, we meant it to happen with a positive
+ * value.
+ *
+ * To avoid this, have _end() be a NOP instruction, this ensures it will be
+ * part of the condition block and does not escape.
+ */
+#define instrumentation_end() ({					\
+	asm volatile("%c0: nop\n\t"					\
+		     ".pushsection .discard.instr_end\n\t"		\
+		     ".long %c0b - .\n\t"				\
+		     ".popsection\n\t" : : "i" (__COUNTER__));		\
+})
+#endif /* CONFIG_DEBUG_ENTRY */
+
 #else
 #define annotate_reachable()
 #define annotate_unreachable()
 #define __annotate_jump_table
 #endif
 
+#ifndef instrumentation_begin
+#define instrumentation_begin()		do { } while(0)
+#define instrumentation_end()		do { } while(0)
+#endif
+
 #ifndef ASM_UNREACHABLE
 # define ASM_UNREACHABLE
 #endif
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index e970f97a7fcb..5da257cbebf1 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -118,6 +118,10 @@ struct ftrace_likely_data {
 #define notrace			__attribute__((__no_instrument_function__))
 #endif
 
+/* Section for code which can't be instrumented at all */
+#define noinstr								\
+	noinline notrace __attribute((__section__(".noinstr.text")))
+
 /*
  * it doesn't make sense on ARM (currently the only user of __naked)
  * to trace naked functions because then mcount is called without
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index 8150f5ac176c..8cac62ee6add 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -101,12 +101,14 @@ static inline void context_tracking_init(void) { }
 
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
 /* must be called with irqs disabled */
-static inline void guest_enter_irqoff(void)
+static __always_inline void guest_enter_irqoff(void)
 {
+	instrumentation_begin();
 	if (vtime_accounting_enabled_this_cpu())
 		vtime_guest_enter(current);
 	else
 		current->flags |= PF_VCPU;
+	instrumentation_end();
 
 	if (context_tracking_enabled())
 		__context_tracking_enter(CONTEXT_GUEST);
@@ -118,39 +120,48 @@ static inline void guest_enter_irqoff(void)
 	 * one time slice). Lets treat guest mode as quiescent state, just like
 	 * we do with user-mode execution.
 	 */
-	if (!context_tracking_enabled_this_cpu())
+	if (!context_tracking_enabled_this_cpu()) {
+		instrumentation_begin();
 		rcu_virt_note_context_switch(smp_processor_id());
+		instrumentation_end();
+	}
 }
 
-static inline void guest_exit_irqoff(void)
+static __always_inline void guest_exit_irqoff(void)
 {
 	if (context_tracking_enabled())
 		__context_tracking_exit(CONTEXT_GUEST);
 
+	instrumentation_begin();
 	if (vtime_accounting_enabled_this_cpu())
 		vtime_guest_exit(current);
 	else
 		current->flags &= ~PF_VCPU;
+	instrumentation_end();
 }
 
 #else
-static inline void guest_enter_irqoff(void)
+static __always_inline void guest_enter_irqoff(void)
 {
 	/*
 	 * This is running in ioctl context so its safe
 	 * to assume that it's the stime pending cputime
 	 * to flush.
 	 */
+	instrumentation_begin();
 	vtime_account_kernel(current);
 	current->flags |= PF_VCPU;
 	rcu_virt_note_context_switch(smp_processor_id());
+	instrumentation_end();
 }
 
-static inline void guest_exit_irqoff(void)
+static __always_inline void guest_exit_irqoff(void)
 {
+	instrumentation_begin();
 	/* Flush the guest cputime we spent on the guest */
 	vtime_account_kernel(current);
 	current->flags &= ~PF_VCPU;
+	instrumentation_end();
 }
 #endif /* CONFIG_VIRT_CPU_ACCOUNTING_GEN */
 
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index a274d95fa66e..63cb3606dea7 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -103,8 +103,8 @@ void debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent,
 		       u8 *value);
 void debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent,
 			u16 *value);
-struct dentry *debugfs_create_u32(const char *name, umode_t mode,
-				  struct dentry *parent, u32 *value);
+void debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent,
+			u32 *value);
 void debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent,
 			u64 *value);
 struct dentry *debugfs_create_ulong(const char *name, umode_t mode,
@@ -250,12 +250,8 @@ static inline void debugfs_create_u8(const char *name, umode_t mode,
 static inline void debugfs_create_u16(const char *name, umode_t mode,
 				      struct dentry *parent, u16 *value) { }
 
-static inline struct dentry *debugfs_create_u32(const char *name, umode_t mode,
-						struct dentry *parent,
-						u32 *value)
-{
-	return ERR_PTR(-ENODEV);
-}
+static inline void debugfs_create_u32(const char *name, umode_t mode,
+				      struct dentry *parent, u32 *value) { }
 
 static inline void debugfs_create_u64(const char *name, umode_t mode,
 				      struct dentry *parent, u64 *value) { }
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index 1ade486fc2bb..57bcef6f988a 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -329,13 +329,12 @@ struct dma_buf {
 
 /**
  * struct dma_buf_attach_ops - importer operations for an attachment
- * @move_notify: [optional] notification that the DMA-buf is moving
  *
  * Attachment operations implemented by the importer.
  */
 struct dma_buf_attach_ops {
 	/**
-	 * @move_notify
+	 * @move_notify: [optional] notification that the DMA-buf is moving
 	 *
 	 * If this callback is provided the framework can avoid pinning the
 	 * backing store while mappings exists.
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 21065c04c4ac..e1c03339918f 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -83,9 +83,9 @@ enum dma_transfer_direction {
 /**
  * Interleaved Transfer Request
  * ----------------------------
- * A chunk is collection of contiguous bytes to be transfered.
+ * A chunk is collection of contiguous bytes to be transferred.
  * The gap(in bytes) between two chunks is called inter-chunk-gap(ICG).
- * ICGs may or maynot change between chunks.
+ * ICGs may or may not change between chunks.
  * A FRAME is the smallest series of contiguous {chunk,icg} pairs,
  *  that when repeated an integral number of times, specifies the transfer.
  * A transfer template is specification of a Frame, the number of times
@@ -341,13 +341,11 @@ struct dma_chan {
  * @chan: driver channel device
  * @device: sysfs device
  * @dev_id: parent dma_device dev_id
- * @idr_ref: reference count to gate release of dma_device dev_id
  */
 struct dma_chan_dev {
 	struct dma_chan *chan;
 	struct device device;
 	int dev_id;
-	atomic_t *idr_ref;
 };
 
 /**
@@ -835,6 +833,8 @@ struct dma_device {
 	int dev_id;
 	struct device *dev;
 	struct module *owner;
+	struct ida chan_ida;
+	struct mutex chan_mutex;	/* to protect chan_ida */
 
 	u32 src_addr_widths;
 	u32 dst_addr_widths;
@@ -1069,7 +1069,7 @@ static inline int dmaengine_terminate_all(struct dma_chan *chan)
  * dmaengine_synchronize() needs to be called before it is safe to free
  * any memory that is accessed by previously submitted descriptors or before
  * freeing any resources accessed from within the completion callback of any
- * perviously submitted descriptors.
+ * previously submitted descriptors.
  *
  * This function can be called from atomic context as well as from within a
  * complete callback of a descriptor submitted on the same channel.
@@ -1091,7 +1091,7 @@ static inline int dmaengine_terminate_async(struct dma_chan *chan)
  *
  * Synchronizes to the DMA channel termination to the current context. When this
  * function returns it is guaranteed that all transfers for previously issued
- * descriptors have stopped and and it is safe to free the memory assoicated
+ * descriptors have stopped and it is safe to free the memory associated
  * with them. Furthermore it is guaranteed that all complete callback functions
  * for a previously submitted descriptor have finished running and it is safe to
  * free resources accessed from within the complete callbacks.
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 4f6f59b4f22a..45cc10cdf6dd 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -983,7 +983,7 @@ struct file_handle {
 	__u32 handle_bytes;
 	int handle_type;
 	/* file identifier */
-	unsigned char f_handle[0];
+	unsigned char f_handle[];
 };
 
 static inline struct file *get_file(struct file *f)
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 17f56a070b20..25c87507a1fa 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -600,7 +600,7 @@ void iio_device_unregister(struct iio_dev *indio_dev);
  * 0 on success, negative error number on failure.
  */
 #define devm_iio_device_register(dev, indio_dev) \
-	__devm_iio_device_register((dev), (indio_dev), THIS_MODULE);
+	__devm_iio_device_register((dev), (indio_dev), THIS_MODULE)
 int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev,
 			       struct module *this_mod);
 void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev);
diff --git a/include/linux/irqflags.h b/include/linux/irqflags.h
index 61a9ced3aa50..d7f7e436c3af 100644
--- a/include/linux/irqflags.h
+++ b/include/linux/irqflags.h
@@ -19,16 +19,20 @@
 #ifdef CONFIG_PROVE_LOCKING
   extern void lockdep_softirqs_on(unsigned long ip);
   extern void lockdep_softirqs_off(unsigned long ip);
+  extern void lockdep_hardirqs_on_prepare(unsigned long ip);
   extern void lockdep_hardirqs_on(unsigned long ip);
   extern void lockdep_hardirqs_off(unsigned long ip);
 #else
   static inline void lockdep_softirqs_on(unsigned long ip) { }
   static inline void lockdep_softirqs_off(unsigned long ip) { }
+  static inline void lockdep_hardirqs_on_prepare(unsigned long ip) { }
   static inline void lockdep_hardirqs_on(unsigned long ip) { }
   static inline void lockdep_hardirqs_off(unsigned long ip) { }
 #endif
 
 #ifdef CONFIG_TRACE_IRQFLAGS
+  extern void trace_hardirqs_on_prepare(void);
+  extern void trace_hardirqs_off_prepare(void);
   extern void trace_hardirqs_on(void);
   extern void trace_hardirqs_off(void);
 # define lockdep_hardirq_context(p)	((p)->hardirq_context)
@@ -96,6 +100,8 @@ do {						\
 	  } while (0)
 
 #else
+# define trace_hardirqs_on_prepare()		do { } while (0)
+# define trace_hardirqs_off_prepare()		do { } while (0)
 # define trace_hardirqs_on()		do { } while (0)
 # define trace_hardirqs_off()		do { } while (0)
 # define lockdep_hardirq_context(p)	0
diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h
index 9cd4455528e5..1bdd027766d4 100644
--- a/include/linux/lsm_hook_defs.h
+++ b/include/linux/lsm_hook_defs.h
@@ -55,7 +55,7 @@ LSM_HOOK(void, LSM_RET_VOID, bprm_committing_creds, struct linux_binprm *bprm)
 LSM_HOOK(void, LSM_RET_VOID, bprm_committed_creds, struct linux_binprm *bprm)
 LSM_HOOK(int, 0, fs_context_dup, struct fs_context *fc,
 	 struct fs_context *src_sc)
-LSM_HOOK(int, 0, fs_context_parse_param, struct fs_context *fc,
+LSM_HOOK(int, -ENOPARAM, fs_context_parse_param, struct fs_context *fc,
 	 struct fs_parameter *param)
 LSM_HOOK(int, 0, sb_alloc_security, struct super_block *sb)
 LSM_HOOK(void, LSM_RET_VOID, sb_free_security, struct super_block *sb)
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index ad1996001965..3d7c3c26eeb9 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -53,9 +53,9 @@ enum mhi_callback {
  * @MHI_CHAIN: Linked transfer
  */
 enum mhi_flags {
-	MHI_EOB,
-	MHI_EOT,
-	MHI_CHAIN,
+	MHI_EOB = BIT(0),
+	MHI_EOT = BIT(1),
+	MHI_CHAIN = BIT(2),
 };
 
 /**
@@ -335,14 +335,15 @@ struct mhi_controller_config {
  * @syserr_worker: System error worker
  * @state_event: State change event
  * @status_cb: CB function to notify power states of the device (required)
- * @link_status: CB function to query link status of the device (required)
  * @wake_get: CB function to assert device wake (optional)
  * @wake_put: CB function to de-assert device wake (optional)
  * @wake_toggle: CB function to assert and de-assert device wake (optional)
  * @runtime_get: CB function to controller runtime resume (required)
- * @runtimet_put: CB function to decrement pm usage (required)
+ * @runtime_put: CB function to decrement pm usage (required)
  * @map_single: CB function to create TRE buffer
  * @unmap_single: CB function to destroy TRE buffer
+ * @read_reg: Read a MHI register via the physical link (required)
+ * @write_reg: Write a MHI register via the physical link (required)
  * @buffer_len: Bounce buffer length
  * @bounce_buf: Use of bounce buffer
  * @fbc_download: MHI host needs to do complete image transfer (optional)
@@ -417,7 +418,6 @@ struct mhi_controller {
 
 	void (*status_cb)(struct mhi_controller *mhi_cntrl,
 			  enum mhi_callback cb);
-	int (*link_status)(struct mhi_controller *mhi_cntrl);
 	void (*wake_get)(struct mhi_controller *mhi_cntrl, bool override);
 	void (*wake_put)(struct mhi_controller *mhi_cntrl, bool override);
 	void (*wake_toggle)(struct mhi_controller *mhi_cntrl);
@@ -427,6 +427,10 @@ struct mhi_controller {
 			  struct mhi_buf_info *buf);
 	void (*unmap_single)(struct mhi_controller *mhi_cntrl,
 			     struct mhi_buf_info *buf);
+	int (*read_reg)(struct mhi_controller *mhi_cntrl, void __iomem *addr,
+			u32 *out);
+	void (*write_reg)(struct mhi_controller *mhi_cntrl, void __iomem *addr,
+			  u32 val);
 
 	size_t buffer_len;
 	bool bounce_buf;
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 440230488025..e5f3e7d8d3d5 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1317,11 +1317,13 @@ struct nfs41_impl_id {
 	struct nfstime4			date;
 };
 
+#define MAX_BIND_CONN_TO_SESSION_RETRIES 3
 struct nfs41_bind_conn_to_session_args {
 	struct nfs_client		*client;
 	struct nfs4_sessionid		sessionid;
 	u32				dir;
 	bool				use_conn_in_rdma_mode;
+	int				retries;
 };
 
 struct nfs41_bind_conn_to_session_res {
diff --git a/include/linux/platform_data/cros_ec_sensorhub.h b/include/linux/platform_data/cros_ec_sensorhub.h
index c588be843f61..0ecce6aa69d5 100644
--- a/include/linux/platform_data/cros_ec_sensorhub.h
+++ b/include/linux/platform_data/cros_ec_sensorhub.h
@@ -185,6 +185,7 @@ int cros_ec_sensorhub_register_push_data(struct cros_ec_sensorhub *sensorhub,
 void cros_ec_sensorhub_unregister_push_data(struct cros_ec_sensorhub *sensorhub,
 					    u8 sensor_num);
 
+int cros_ec_sensorhub_ring_allocate(struct cros_ec_sensorhub *sensorhub);
 int cros_ec_sensorhub_ring_add(struct cros_ec_sensorhub *sensorhub);
 void cros_ec_sensorhub_ring_remove(void *arg);
 int cros_ec_sensorhub_ring_fifo_enable(struct cros_ec_sensorhub *sensorhub,
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index bdc35753ef7c..77a2aada106d 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -25,6 +25,7 @@ struct platform_device {
 	bool		id_auto;
 	struct device	dev;
 	u64		platform_dma_mask;
+	struct device_dma_parameters dma_parms;
 	u32		num_resources;
 	struct resource	*resource;
 
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index b18dca67253d..c2a7cfbca713 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -220,10 +220,8 @@ struct pnp_card {
 #define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)
 #define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)
 #define to_pnp_card(n) container_of(n, struct pnp_card, dev)
-#define pnp_for_each_card(card) \
-	for((card) = global_to_pnp_card(pnp_cards.next); \
-	(card) != global_to_pnp_card(&pnp_cards); \
-	(card) = global_to_pnp_card((card)->global_list.next))
+#define pnp_for_each_card(card)	\
+	list_for_each_entry(card, &pnp_cards, global_list)
 
 struct pnp_card_link {
 	struct pnp_card *card;
@@ -276,14 +274,9 @@ struct pnp_dev {
 #define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)
 #define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)
 #define	to_pnp_dev(n) container_of(n, struct pnp_dev, dev)
-#define pnp_for_each_dev(dev) \
-	for((dev) = global_to_pnp_dev(pnp_global.next); \
-	(dev) != global_to_pnp_dev(&pnp_global); \
-	(dev) = global_to_pnp_dev((dev)->global_list.next))
-#define card_for_each_dev(card,dev) \
-	for((dev) = card_to_pnp_dev((card)->devices.next); \
-	(dev) != card_to_pnp_dev(&(card)->devices); \
-	(dev) = card_to_pnp_dev((dev)->card_list.next))
+#define pnp_for_each_dev(dev) list_for_each_entry(dev, &pnp_global, global_list)
+#define card_for_each_dev(card, dev)	\
+	list_for_each_entry(dev, &(card)->devices, card_list)
 #define pnp_dev_name(dev) (dev)->name
 
 static inline void *pnp_get_drvdata(struct pnp_dev *pdev)
@@ -437,14 +430,10 @@ struct pnp_protocol {
 };
 
 #define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)
-#define protocol_for_each_card(protocol,card) \
-	for((card) = protocol_to_pnp_card((protocol)->cards.next); \
-	(card) != protocol_to_pnp_card(&(protocol)->cards); \
-	(card) = protocol_to_pnp_card((card)->protocol_list.next))
-#define protocol_for_each_dev(protocol,dev) \
-	for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \
-	(dev) != protocol_to_pnp_dev(&(protocol)->devices); \
-	(dev) = protocol_to_pnp_dev((dev)->protocol_list.next))
+#define protocol_for_each_card(protocol, card)	\
+	list_for_each_entry(card, &(protocol)->cards, protocol_list)
+#define protocol_for_each_dev(protocol, dev)	\
+	list_for_each_entry(dev, &(protocol)->devices, protocol_list)
 
 extern struct bus_type pnp_bus_type;
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 4418f5cb8324..658de6164853 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -983,6 +983,7 @@ struct task_struct {
 	unsigned int			hardirq_disable_event;
 	int				hardirqs_enabled;
 	int				hardirq_context;
+	u64				hardirq_chain_key;
 	unsigned long			softirq_disable_ip;
 	unsigned long			softirq_enable_ip;
 	unsigned int			softirq_disable_event;
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index fbafb353e9be..bd964c31d333 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -177,6 +177,8 @@ struct plat_stmmacenet_data {
 	struct stmmac_rxq_cfg rx_queues_cfg[MTL_MAX_RX_QUEUES];
 	struct stmmac_txq_cfg tx_queues_cfg[MTL_MAX_TX_QUEUES];
 	void (*fix_mac_speed)(void *priv, unsigned int speed);
+	int (*serdes_powerup)(struct net_device *ndev, void *priv);
+	void (*serdes_powerdown)(struct net_device *ndev, void *priv);
 	int (*init)(struct platform_device *pdev, void *priv);
 	void (*exit)(struct platform_device *pdev, void *priv);
 	struct mac_device_info *(*setup)(void *priv);
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index ca7e108248e2..02e7a5863d28 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -71,7 +71,13 @@ struct rpc_clnt {
 #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
 	struct dentry		*cl_debugfs;	/* debugfs directory */
 #endif
-	struct rpc_xprt_iter	cl_xpi;
+	/* cl_work is only needed after cl_xpi is no longer used,
+	 * and that are of similar size
+	 */
+	union {
+		struct rpc_xprt_iter	cl_xpi;
+		struct work_struct	cl_work;
+	};
 	const struct cred	*cl_cred;
 };
 
@@ -236,4 +242,9 @@ static inline int rpc_reply_expected(struct rpc_task *task)
 		(task->tk_msg.rpc_proc->p_decode != NULL);
 }
 
+static inline void rpc_task_close_connection(struct rpc_task *task)
+{
+	if (task->tk_xprt)
+		xprt_force_disconnect(task->tk_xprt);
+}
 #endif /* _LINUX_SUNRPC_CLNT_H */
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index 78fe2ac6dc6c..cbcfbd0521e3 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -170,6 +170,7 @@ extern bool svc_rdma_post_recvs(struct svcxprt_rdma *rdma);
 extern void svc_rdma_recv_ctxt_put(struct svcxprt_rdma *rdma,
 				   struct svc_rdma_recv_ctxt *ctxt);
 extern void svc_rdma_flush_recv_queues(struct svcxprt_rdma *rdma);
+extern void svc_rdma_release_rqst(struct svc_rqst *rqstp);
 extern int svc_rdma_recvfrom(struct svc_rqst *);
 
 /* svc_rdma_rw.c */
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 421c99c12291..4f8159e90ce1 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -78,47 +78,6 @@ struct tcp_sack_block {
 #define TCP_SACK_SEEN     (1 << 0)   /*1 = peer is SACK capable, */
 #define TCP_DSACK_SEEN    (1 << 2)   /*1 = DSACK was received from peer*/
 
-#if IS_ENABLED(CONFIG_MPTCP)
-struct mptcp_options_received {
-	u64	sndr_key;
-	u64	rcvr_key;
-	u64	data_ack;
-	u64	data_seq;
-	u32	subflow_seq;
-	u16	data_len;
-	u16	mp_capable : 1,
-		mp_join : 1,
-		dss : 1,
-		add_addr : 1,
-		rm_addr : 1,
-		family : 4,
-		echo : 1,
-		backup : 1;
-	u32	token;
-	u32	nonce;
-	u64	thmac;
-	u8	hmac[20];
-	u8	join_id;
-	u8	use_map:1,
-		dsn64:1,
-		data_fin:1,
-		use_ack:1,
-		ack64:1,
-		mpc_map:1,
-		__unused:2;
-	u8	addr_id;
-	u8	rm_id;
-	union {
-		struct in_addr	addr;
-#if IS_ENABLED(CONFIG_MPTCP_IPV6)
-		struct in6_addr	addr6;
-#endif
-	};
-	u64	ahmac;
-	u16	port;
-};
-#endif
-
 struct tcp_options_received {
 /*	PAWS/RTTM data	*/
 	int	ts_recent_stamp;/* Time we stored ts_recent (for aging) */
@@ -136,9 +95,6 @@ struct tcp_options_received {
 	u8	num_sacks;	/* Number of SACK blocks		*/
 	u16	user_mss;	/* mss requested by user in ioctl	*/
 	u16	mss_clamp;	/* Maximal mss, negotiated at connection setup */
-#if IS_ENABLED(CONFIG_MPTCP)
-	struct mptcp_options_received	mptcp;
-#endif
 };
 
 static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
@@ -148,13 +104,6 @@ static inline void tcp_clear_options(struct tcp_options_received *rx_opt)
 #if IS_ENABLED(CONFIG_SMC)
 	rx_opt->smc_ok = 0;
 #endif
-#if IS_ENABLED(CONFIG_MPTCP)
-	rx_opt->mptcp.mp_capable = 0;
-	rx_opt->mptcp.mp_join = 0;
-	rx_opt->mptcp.add_addr = 0;
-	rx_opt->mptcp.rm_addr = 0;
-	rx_opt->mptcp.dss = 0;
-#endif
 }
 
 /* This is the max number of SACKS that we'll generate and process. It's safe
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 1fb11daa5c53..a1fecf311621 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -156,8 +156,7 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
  * Note, the proto and args passed in includes "__data" as the first parameter.
  * The reason for this is to handle the "void" prototype. If a tracepoint
  * has a "void" prototype, then it is invalid to declare a function
- * as "(void *, void)". The DECLARE_TRACE_NOARGS() will pass in just
- * "void *data", where as the DECLARE_TRACE() will pass in "void *data, proto".
+ * as "(void *, void)".
  */
 #define __DO_TRACE(tp, proto, args, cond, rcuidle)			\
 	do {								\
@@ -373,25 +372,6 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p)
 # define __tracepoint_string
 #endif
 
-/*
- * The need for the DECLARE_TRACE_NOARGS() is to handle the prototype
- * (void). "void" is a special value in a function prototype and can
- * not be combined with other arguments. Since the DECLARE_TRACE()
- * macro adds a data element at the beginning of the prototype,
- * we need a way to differentiate "(void *data, proto)" from
- * "(void *data, void)". The second prototype is invalid.
- *
- * DECLARE_TRACE_NOARGS() passes "void" as the tracepoint prototype
- * and "void *__data" as the callback prototype.
- *
- * DECLARE_TRACE() passes "proto" as the tracepoint protoype and
- * "void *__data, proto" as the callback prototype.
- */
-#define DECLARE_TRACE_NOARGS(name)					\
-	__DECLARE_TRACE(name, void, ,					\
-			cpu_online(raw_smp_processor_id()),		\
-			void *__data, __data)
-
 #define DECLARE_TRACE(name, proto, args)				\
 	__DECLARE_TRACE(name, PARAMS(proto), PARAMS(args),		\
 			cpu_online(raw_smp_processor_id()),		\
diff --git a/include/linux/tty.h b/include/linux/tty.h
index bd5fe0e907e8..a99e9b8e4e31 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -66,7 +66,7 @@ struct tty_buffer {
 	int read;
 	int flags;
 	/* Data points here */
-	unsigned long data[0];
+	unsigned long data[];
 };
 
 /* Values for .flags field of tty_buffer */
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 733acfb7ef84..5453af87a33e 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -164,7 +164,7 @@ struct vdpa_config_ops {
 	u64 (*get_vq_state)(struct vdpa_device *vdev, u16 idx);
 
 	/* Device ops */
-	u16 (*get_vq_align)(struct vdpa_device *vdev);
+	u32 (*get_vq_align)(struct vdpa_device *vdev);
 	u64 (*get_features)(struct vdpa_device *vdev);
 	int (*set_features)(struct vdpa_device *vdev, u64 features);
 	void (*set_config_cb)(struct vdpa_device *vdev,
diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h
index 9aced11e9000..dc236577b92f 100644
--- a/include/linux/vermagic.h
+++ b/include/linux/vermagic.h
@@ -1,5 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_VERMAGIC_H
+#define _LINUX_VERMAGIC_H
+
 #include <generated/utsrelease.h>
+#include <asm/vermagic.h>
 
 /* Simply sanity version stamp for modules. */
 #ifdef CONFIG_SMP
@@ -24,9 +28,6 @@
 #else
 #define MODULE_VERMAGIC_MODVERSIONS ""
 #endif
-#ifndef MODULE_ARCH_VERMAGIC
-#define MODULE_ARCH_VERMAGIC ""
-#endif
 #ifdef RANDSTRUCT_PLUGIN
 #include <generated/randomize_layout_hash.h>
 #define MODULE_RANDSTRUCT_PLUGIN "RANDSTRUCT_PLUGIN_" RANDSTRUCT_HASHED_SEED
@@ -41,3 +42,4 @@
 	MODULE_ARCH_VERMAGIC						\
 	MODULE_RANDSTRUCT_PLUGIN
 
+#endif /* _LINUX_VERMAGIC_H */
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 15f906e4a748..a493eac08393 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -9,7 +9,6 @@
 #include <linux/device.h>
 #include <linux/mod_devicetable.h>
 #include <linux/gfp.h>
-#include <linux/vringh.h>
 
 /**
  * virtqueue - a queue to register buffers for sending or receiving.
diff --git a/include/linux/virtio_net.h b/include/linux/virtio_net.h
index 0d1fe9297ac6..6f6ade63b04c 100644
--- a/include/linux/virtio_net.h
+++ b/include/linux/virtio_net.h
@@ -3,6 +3,8 @@
 #define _LINUX_VIRTIO_NET_H
 
 #include <linux/if_vlan.h>
+#include <uapi/linux/tcp.h>
+#include <uapi/linux/udp.h>
 #include <uapi/linux/virtio_net.h>
 
 static inline int virtio_net_hdr_set_proto(struct sk_buff *skb,
@@ -28,17 +30,25 @@ static inline int virtio_net_hdr_to_skb(struct sk_buff *skb,
 					bool little_endian)
 {
 	unsigned int gso_type = 0;
+	unsigned int thlen = 0;
+	unsigned int ip_proto;
 
 	if (hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {
 		switch (hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {
 		case VIRTIO_NET_HDR_GSO_TCPV4:
 			gso_type = SKB_GSO_TCPV4;
+			ip_proto = IPPROTO_TCP;
+			thlen = sizeof(struct tcphdr);
 			break;
 		case VIRTIO_NET_HDR_GSO_TCPV6:
 			gso_type = SKB_GSO_TCPV6;
+			ip_proto = IPPROTO_TCP;
+			thlen = sizeof(struct tcphdr);
 			break;
 		case VIRTIO_NET_HDR_GSO_UDP:
 			gso_type = SKB_GSO_UDP;
+			ip_proto = IPPROTO_UDP;
+			thlen = sizeof(struct udphdr);
 			break;
 		default:
 			return -EINVAL;
@@ -57,16 +67,22 @@ static inline int virtio_net_hdr_to_skb(struct sk_buff *skb,
 
 		if (!skb_partial_csum_set(skb, start, off))
 			return -EINVAL;
+
+		if (skb_transport_offset(skb) + thlen > skb_headlen(skb))
+			return -EINVAL;
 	} else {
 		/* gso packets without NEEDS_CSUM do not set transport_offset.
 		 * probe and drop if does not match one of the above types.
 		 */
 		if (gso_type && skb->network_header) {
+			struct flow_keys_basic keys;
+
 			if (!skb->protocol)
 				virtio_net_hdr_set_proto(skb, hdr);
 retry:
-			skb_probe_transport_header(skb);
-			if (!skb_transport_header_was_set(skb)) {
+			if (!skb_flow_dissect_flow_keys_basic(NULL, skb, &keys,
+							      NULL, 0, 0, 0,
+							      0)) {
 				/* UFO does not specify ipv4 or 6: try both */
 				if (gso_type & SKB_GSO_UDP &&
 				    skb->protocol == htons(ETH_P_IP)) {
@@ -75,6 +91,12 @@ retry:
 				}
 				return -EINVAL;
 			}
+
+			if (keys.control.thoff + thlen > skb_headlen(skb) ||
+			    keys.basic.ip_proto != ip_proto)
+				return -EINVAL;
+
+			skb_set_transport_header(skb, keys.control.thoff);
 		}
 	}
 
diff --git a/include/linux/virtio_vsock.h b/include/linux/virtio_vsock.h
index 71c81e0dc8f2..dc636b727179 100644
--- a/include/linux/virtio_vsock.h
+++ b/include/linux/virtio_vsock.h
@@ -48,6 +48,7 @@ struct virtio_vsock_pkt {
 	u32 len;
 	u32 off;
 	bool reply;
+	bool tap_delivered;
 };
 
 struct virtio_vsock_pkt_info {
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 0507a162ccd0..a95d3cc74d79 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -137,7 +137,7 @@ extern void vunmap(const void *addr);
 
 extern int remap_vmalloc_range_partial(struct vm_area_struct *vma,
 				       unsigned long uaddr, void *kaddr,
-				       unsigned long size);
+				       unsigned long pgoff, unsigned long size);
 
 extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
 							unsigned long pgoff);
diff --git a/include/linux/vringh.h b/include/linux/vringh.h
index bd0503ca6f8f..9e2763d7c159 100644
--- a/include/linux/vringh.h
+++ b/include/linux/vringh.h
@@ -14,8 +14,10 @@
 #include <linux/virtio_byteorder.h>
 #include <linux/uio.h>
 #include <linux/slab.h>
+#if IS_REACHABLE(CONFIG_VHOST_IOTLB)
 #include <linux/dma-direction.h>
 #include <linux/vhost_iotlb.h>
+#endif
 #include <asm/barrier.h>
 
 /* virtio_ring with information needed for host access. */
@@ -254,6 +256,8 @@ static inline __virtio64 cpu_to_vringh64(const struct vringh *vrh, u64 val)
 	return __cpu_to_virtio64(vringh_is_little_endian(vrh), val);
 }
 
+#if IS_REACHABLE(CONFIG_VHOST_IOTLB)
+
 void vringh_set_iotlb(struct vringh *vrh, struct vhost_iotlb *iotlb);
 
 int vringh_init_iotlb(struct vringh *vrh, u64 features,
@@ -284,4 +288,6 @@ void vringh_notify_disable_iotlb(struct vringh *vrh);
 
 int vringh_need_notify_iotlb(struct vringh *vrh);
 
+#endif /* CONFIG_VHOST_IOTLB */
+
 #endif /* _LINUX_VRINGH_H */