Merge tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add support for ftrace with direct call and ftrace direct call
   samples.

 - Add support for kernel command lines longer than current 896 bytes
   and make its length configurable.

 - Add support for BEAR enhancement facility to improve last breaking
   event instruction tracking.

 - Add kprobes sanity checks and testcases to prevent kprobe in the mid
   of an instruction.

 - Allow concurrent access to /dev/hwc for the CPUMF users.

 - Various ftrace / jump label improvements.

 - Convert unwinder tests to KUnit.

 - Add s390_iommu_aperture kernel parameter to tweak the limits on
   concurrently usable DMA mappings.

 - Add ap.useirq AP module option which can be used to disable interrupt
   use.

 - Add add_disk() error handling support to block device drivers.

 - Drop arch specific and use generic implementation of strlcpy and
   strrchr.

 - Several __pa/__va usages fixes.

 - Various cio, crypto, pci, kernel doc and other small fixes and
   improvements all over the code.

[ Merge fixup as per https://lore.kernel.org/all/YXAqZ%2FEszRisunQw@osiris/ ]

* tag 's390-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (63 commits)
  s390: make command line configurable
  s390: support command lines longer than 896 bytes
  s390/kexec_file: move kernel image size check
  s390/pci: add s390_iommu_aperture kernel parameter
  s390/spinlock: remove incorrect kernel doc indicator
  s390/string: use generic strlcpy
  s390/string: use generic strrchr
  s390/ap: function rework based on compiler warning
  s390/cio: make ccw_device_dma_* more robust
  s390/vfio-ap: s390/crypto: fix all kernel-doc warnings
  s390/hmcdrv: fix kernel doc comments
  s390/ap: new module option ap.useirq
  s390/cpumf: Allow multiple processes to access /dev/hwc
  s390/bitops: return true/false (not 1/0) from bool functions
  s390: add support for BEAR enhancement facility
  s390: introduce nospec_uses_trampoline()
  s390: rename last_break to pgm_last_break
  s390/ptrace: add last_break member to pt_regs
  s390/sclp: sort out physical vs virtual pointers usage
  s390/setup: convert start and end initrd pointers to virtual
  ...

6 files changed, 27 insertions, 12 deletions

diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 2cf7fe131ece..f0763e36b861 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -163,7 +163,7 @@ static inline void sclp_trace_req(int prio, char *id, struct sclp_req *req,
 	summary.timeout = (u16)req->queue_timeout;
 	summary.start_count = (u16)req->start_count;
 
-	sclp_trace(prio, id, (u32)(addr_t)sccb, summary.b, err);
+	sclp_trace(prio, id, __pa(sccb), summary.b, err);
 }
 
 static inline void sclp_trace_register(int prio, char *id, u32 a, u64 b,
@@ -502,7 +502,7 @@ sclp_add_request(struct sclp_req *req)
 	}
 
 	/* RQAD: Request was added (a=sccb, b=caller) */
-	sclp_trace(2, "RQAD", (u32)(addr_t)req->sccb, _RET_IP_, false);
+	sclp_trace(2, "RQAD", __pa(req->sccb), _RET_IP_, false);
 
 	req->status = SCLP_REQ_QUEUED;
 	req->start_count = 0;
@@ -617,15 +617,15 @@ __sclp_find_req(u32 sccb)
 
 	list_for_each(l, &sclp_req_queue) {
 		req = list_entry(l, struct sclp_req, list);
-		if (sccb == (u32) (addr_t) req->sccb)
-				return req;
+		if (sccb == __pa(req->sccb))
+			return req;
 	}
 	return NULL;
 }
 
 static bool ok_response(u32 sccb_int, sclp_cmdw_t cmd)
 {
-	struct sccb_header *sccb = (struct sccb_header *)(addr_t)sccb_int;
+	struct sccb_header *sccb = (struct sccb_header *)__va(sccb_int);
 	struct evbuf_header *evbuf;
 	u16 response;
 
@@ -664,7 +664,7 @@ static void sclp_interrupt_handler(struct ext_code ext_code,
 
 	/* INT: Interrupt received (a=intparm, b=cmd) */
 	sclp_trace_sccb(0, "INT", param32, active_cmd, active_cmd,
-			(struct sccb_header *)(addr_t)finished_sccb,
+			(struct sccb_header *)__va(finished_sccb),
 			!ok_response(finished_sccb, active_cmd));
 
 	if (finished_sccb) {
@@ -1110,7 +1110,7 @@ static void sclp_check_handler(struct ext_code ext_code,
 	/* Is this the interrupt we are waiting for? */
 	if (finished_sccb == 0)
 		return;
-	if (finished_sccb != (u32) (addr_t) sclp_init_sccb)
+	if (finished_sccb != __pa(sclp_init_sccb))
 		panic("sclp: unsolicited interrupt for buffer at 0x%x\n",
 		      finished_sccb);
 	spin_lock(&sclp_lock);
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index 5e434108aae6..8a30e77db469 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -333,7 +333,7 @@ static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
 		"2:\n"
 		EX_TABLE(0b, 2b)
 		EX_TABLE(1b, 2b)
-		: "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb)
+		: "+&d" (cc) : "d" (command), "a" (__pa(sccb))
 		: "cc", "memory");
 	if (cc == 4)
 		return -EINVAL;
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index c0052655fc4f..b64feab62caa 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -155,6 +155,11 @@ static void __init sclp_early_console_detect(struct init_sccb *sccb)
 		sclp.has_linemode = 1;
 }
 
+void __init sclp_early_adjust_va(void)
+{
+	sclp_early_sccb = __va((unsigned long)sclp_early_sccb);
+}
+
 void __init sclp_early_detect(void)
 {
 	void *sccb = sclp_early_sccb;
diff --git a/drivers/s390/char/sclp_ftp.c b/drivers/s390/char/sclp_ftp.c
index 1e9de99dcd02..ec5a0e2b9255 100644
--- a/drivers/s390/char/sclp_ftp.c
+++ b/drivers/s390/char/sclp_ftp.c
@@ -31,6 +31,8 @@ static u64 sclp_ftp_length;
 
 /**
  * sclp_ftp_txcb() - Diagnostic Test FTP services SCLP command callback
+ * @req: sclp request
+ * @data: pointer to struct completion
  */
 static void sclp_ftp_txcb(struct sclp_req *req, void *data)
 {
@@ -45,6 +47,7 @@ static void sclp_ftp_txcb(struct sclp_req *req, void *data)
 
 /**
  * sclp_ftp_rxcb() - Diagnostic Test FTP services receiver event callback
+ * @evbuf: pointer to Diagnostic Test (ET7) event buffer
  */
 static void sclp_ftp_rxcb(struct evbuf_header *evbuf)
 {
diff --git a/drivers/s390/char/sclp_sd.c b/drivers/s390/char/sclp_sd.c
index 1e244f78f192..25c2d760f6e6 100644
--- a/drivers/s390/char/sclp_sd.c
+++ b/drivers/s390/char/sclp_sd.c
@@ -122,6 +122,7 @@ static void sclp_sd_listener_remove(struct sclp_sd_listener *listener)
 
 /**
  * sclp_sd_listener_init() - Initialize a Store Data response listener
+ * @listener: Response listener to initialize
  * @id: Event ID to listen for
  *
  * Initialize a listener for asynchronous Store Data responses. This listener
@@ -193,7 +194,7 @@ static int sclp_sd_sync(unsigned long page, u8 eq, u8 di, u64 sat, u64 sa,
 	struct sclp_sd_evbuf *evbuf;
 	int rc;
 
-	sclp_sd_listener_init(&listener, (u32) (addr_t) sccb);
+	sclp_sd_listener_init(&listener, __pa(sccb));
 	sclp_sd_listener_add(&listener);
 
 	/* Prepare SCCB */
@@ -403,6 +404,7 @@ static int sclp_sd_file_update(struct sclp_sd_file *sd_file)
 /**
  * sclp_sd_file_update_async() - Wrapper for asynchronous update call
  * @data: Object to update
+ * @cookie: Unused
  */
 static void sclp_sd_file_update_async(void *data, async_cookie_t cookie)
 {
@@ -414,6 +416,9 @@ static void sclp_sd_file_update_async(void *data, async_cookie_t cookie)
 /**
  * reload_store() - Store function for "reload" sysfs attribute
  * @kobj: Kobject of sclp_sd_file object
+ * @attr: Reload attribute
+ * @buf: Data written to sysfs attribute
+ * @count: Count of bytes written
  *
  * Initiate a reload of the data associated with an sclp_sd_file object.
  */
@@ -441,8 +446,10 @@ static struct kobj_type sclp_sd_file_ktype = {
 };
 
 /**
- * data_read() - Read function for "read" sysfs attribute
+ * data_read() - Read function for "data" sysfs attribute
+ * @file: Open file pointer
  * @kobj: Kobject of sclp_sd_file object
+ * @attr: Data attribute
  * @buffer: Target buffer
  * @off: Requested file offset
  * @size: Requested number of bytes
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 29a6a0099f83..7bc4e4a10937 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -768,6 +768,8 @@ out_driver:
 }
 __initcall(sclp_vt220_tty_init);
 
+#ifdef CONFIG_SCLP_VT220_CONSOLE
+
 static void __sclp_vt220_flush_buffer(void)
 {
 	unsigned long flags;
@@ -784,8 +786,6 @@ static void __sclp_vt220_flush_buffer(void)
 	spin_unlock_irqrestore(&sclp_vt220_lock, flags);
 }
 
-#ifdef CONFIG_SCLP_VT220_CONSOLE
-
 static void
 sclp_vt220_con_write(struct console *con, const char *buf, unsigned int count)
 {