Merge tag 's390-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Add sorting of mcount locations at build time

 - Rework uaccess functions with C exception handling to shorten inline
   assembly size and enable full inlining. This yields near-optimal code
   for small constant copies with a ~40kb kernel size increase

 - Add support for a configurable STRICT_MM_TYPECHECKS which allows to
   generate better code, but also allows to have type checking for debug
   builds

 - Optimize get_lowcore() for common callers with alternatives that
   nearly revert to the pre-relocated lowcore code, while also slightly
   reducing syscall entry and exit time

 - Convert MACHINE_HAS_* checks for single facility tests into cpu_has_*
   style macros that call test_facility(), and for features with
   additional conditions, add a new ALT_TYPE_FEATURE alternative to
   provide a static branch via alternative patching. Also, move machine
   feature detection to the decompressor for early patching and add
   debugging functionality to easily show which alternatives are patched

 - Add exception table support to early boot / startup code to get rid
   of the open coded exception handling

 - Use asm_inline for all inline assemblies with EX_TABLE or ALTERNATIVE
   to ensure correct inlining and unrolling decisions

 - Remove 2k page table leftovers now that s390 has been switched to
   always allocate 4k page tables

 - Split kfence pool into 4k mappings in arch_kfence_init_pool() and
   remove the architecture-specific kfence_split_mapping()

 - Use READ_ONCE_NOCHECK() in regs_get_kernel_stack_nth() to silence
   spurious KASAN warnings from opportunistic ftrace argument tracing

 - Force __atomic_add_const() variants on s390 to always return void,
   ensuring compile errors for improper usage

 - Remove s390's ioremap_wt() and pgprot_writethrough() due to
   mismatched semantics and lack of known users, relying on asm-generic
   fallbacks

 - Signal eventfd in vfio-ap to notify userspace when the guest AP
   configuration changes, including during mdev removal

 - Convert mdev_types from an array to a pointer in vfio-ccw and vfio-ap
   drivers to avoid fake flex array confusion

 - Cleanup trap code

 - Remove references to the outdated linux390@de.ibm.com address

 - Other various small fixes and improvements all over the code

* tag 's390-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (78 commits)
  s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies
  s390/kfence: Split kfence pool into 4k mappings in arch_kfence_init_pool()
  s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth()
  s390/boot: Ignore vmlinux.map
  s390/sysctl: Remove "vm/allocate_pgste" sysctl
  s390: Remove 2k vs 4k page table leftovers
  s390/tlb: Use mm_has_pgste() instead of mm_alloc_pgste()
  s390/lowcore: Use lghi instead llilh to clear register
  s390/syscall: Merge __do_syscall() and do_syscall()
  s390/spinlock: Implement SPINLOCK_LOCKVAL with inline assembly
  s390/smp: Implement raw_smp_processor_id() with inline assembly
  s390/current: Implement current with inline assembly
  s390/lowcore: Use inline qualifier for get_lowcore() inline assembly
  s390: Move s390 sysctls into their own file under arch/s390
  s390/syscall: Simplify syscall_get_arguments()
  s390/vfio-ap: Notify userspace that guest's AP config changed when mdev removed
  s390: Remove ioremap_wt() and pgprot_writethrough()
  s390/mm: Add configurable STRICT_MM_TYPECHECKS
  s390/mm: Convert pgste_val() into function
  s390/mm: Convert pgprot_val() into function
  ...

34 files changed, 178 insertions, 58 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 3ed642f4f00d..31bfb49588c2 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -21,6 +21,7 @@
 #include <linux/seq_file.h>
 #include <linux/vmalloc.h>
 
+#include <asm/machine.h>
 #include <asm/ccwdev.h>
 #include <asm/ebcdic.h>
 #include <asm/idals.h>
@@ -3382,7 +3383,7 @@ int dasd_device_is_ro(struct dasd_device *device)
 	struct diag210 diag_data;
 	int rc;
 
-	if (!MACHINE_IS_VM)
+	if (!machine_is_vm())
 		return 0;
 	ccw_device_get_id(device->cdev, &dev_id);
 	memset(&diag_data, 0, sizeof(diag_data));
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index 71d8fb86139d..3bb69069dfc6 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 
+#include <asm/machine.h>
 #include <asm/debug.h>
 #include <linux/uaccess.h>
 #include <asm/ipl.h>
@@ -234,7 +235,7 @@ static int __init dasd_parse_keyword(char *keyword)
 		return 0;
         }
 	if (strncmp("nopav", keyword, length) == 0) {
-		if (MACHINE_IS_VM)
+		if (machine_is_vm())
 			pr_info("'nopav' is not supported on z/VM\n");
 		else {
 			dasd_nopav = 1;
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 26812abddef1..56f1af8a7ddd 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/jiffies.h>
 #include <asm/asm-extable.h>
+#include <asm/machine.h>
 #include <asm/dasd.h>
 #include <asm/debug.h>
 #include <asm/diag.h>
@@ -75,7 +76,7 @@ static inline int __dia250(void *iob, int cmd)
 	} addr_type;
 
 	exception = 1;
-	asm volatile(
+	asm_inline volatile(
 		"	diag	%[rx],%[cmd],0x250\n"
 		"0:	lhi	%[exc],0\n"
 		"1:\n"
@@ -654,7 +655,7 @@ static struct dasd_discipline dasd_diag_discipline = {
 static int __init
 dasd_diag_init(void)
 {
-	if (!MACHINE_IS_VM) {
+	if (!machine_is_vm()) {
 		pr_info("Discipline %s cannot be used without z/VM\n",
 			dasd_diag_discipline.name);
 		return -ENODEV;
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 1ebe589b5185..88fa17aea2ec 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -23,6 +23,7 @@
 #include <linux/io.h>
 
 #include <asm/css_chars.h>
+#include <asm/machine.h>
 #include <asm/debug.h>
 #include <asm/idals.h>
 #include <asm/ebcdic.h>
@@ -1953,7 +1954,7 @@ static int dasd_eckd_validate_server(struct dasd_device *device,
 	if (private->uid.type == UA_BASE_PAV_ALIAS ||
 	    private->uid.type == UA_HYPER_PAV_ALIAS)
 		return 0;
-	if (dasd_nopav || MACHINE_IS_VM)
+	if (dasd_nopav || machine_is_vm())
 		enable_pav = 0;
 	else
 		enable_pav = 1;
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index c763c50d1454..6a61c0a595d9 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -23,6 +23,7 @@
 #include <linux/reboot.h>
 #include <linux/serial.h> /* ASYNC_* flags */
 #include <linux/slab.h>
+#include <asm/machine.h>
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
 #include <linux/io.h>
@@ -907,7 +908,7 @@ static int __init con3215_init(void)
 		return -ENODEV;
 
 	/* Set the console mode for VM */
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		cpcmd("TERM CONMODE 3215", NULL, 0, NULL);
 		cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
 	}
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index ae1b9aa3a2b5..1a3190848670 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -23,6 +23,7 @@
 #include <linux/memblock.h>
 #include <linux/compat.h>
 
+#include <asm/machine.h>
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
 #include <asm/ebcdic.h>
@@ -2156,7 +2157,7 @@ con3270_init(void)
 		return -ENODEV;
 
 	/* Set the console mode for VM */
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		cpcmd("TERM CONMODE 3270", NULL, 0, NULL);
 		cpcmd("TERM AUTOCR OFF", NULL, 0, NULL);
 	}
diff --git a/drivers/s390/char/diag_ftp.c b/drivers/s390/char/diag_ftp.c
index 9418a9270d03..711f6982438e 100644
--- a/drivers/s390/char/diag_ftp.c
+++ b/drivers/s390/char/diag_ftp.c
@@ -106,7 +106,7 @@ static int diag_ftp_2c4(struct diag_ftp_ldfpl *fpl,
 	int rc;
 
 	diag_stat_inc(DIAG_STAT_X2C4);
-	asm volatile(
+	asm_inline volatile(
 		"	diag	%[addr],%[cmd],0x2c4\n"
 		"0:	j	2f\n"
 		"1:	la	%[rc],%[err]\n"
diff --git a/drivers/s390/char/hmcdrv_ftp.c b/drivers/s390/char/hmcdrv_ftp.c
index 02b6f394aec2..4e3c7ec6749b 100644
--- a/drivers/s390/char/hmcdrv_ftp.c
+++ b/drivers/s390/char/hmcdrv_ftp.c
@@ -17,6 +17,8 @@
 #include <linux/ctype.h>
 #include <linux/crc16.h>
 
+#include <asm/machine.h>
+
 #include "hmcdrv_ftp.h"
 #include "hmcdrv_cache.h"
 #include "sclp_ftp.h"
@@ -308,9 +310,9 @@ int hmcdrv_ftp_startup(void)
 	mutex_lock(&hmcdrv_ftp_mutex); /* block transfers while start-up */
 
 	if (hmcdrv_ftp_refcnt == 0) {
-		if (MACHINE_IS_VM)
+		if (machine_is_vm())
 			hmcdrv_ftp_funcs = &hmcdrv_ftp_zvm;
-		else if (MACHINE_IS_LPAR || MACHINE_IS_KVM)
+		else if (machine_is_lpar() || machine_is_kvm())
 			hmcdrv_ftp_funcs = &hmcdrv_ftp_lpar;
 		else
 			rc = -EOPNOTSUPP;
diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c
index 7207a7f5842a..2d9886651d9b 100644
--- a/drivers/s390/char/monreader.c
+++ b/drivers/s390/char/monreader.c
@@ -24,6 +24,7 @@
 #include <linux/slab.h>
 #include <net/iucv/iucv.h>
 #include <linux/uaccess.h>
+#include <asm/machine.h>
 #include <asm/ebcdic.h>
 #include <asm/extmem.h>
 
@@ -456,7 +457,7 @@ static int __init mon_init(void)
 {
 	int rc;
 
-	if (!MACHINE_IS_VM) {
+	if (!machine_is_vm()) {
 		pr_err("The z/VM *MONITOR record device driver cannot be "
 		       "loaded without z/VM\n");
 		return -ENODEV;
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index bc5193d81f9c..0fab1f025a94 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -23,6 +23,7 @@
 #include <linux/slab.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <asm/machine.h>
 #include <asm/ebcdic.h>
 #include <asm/appldata.h>
 #include <asm/monwriter.h>
@@ -293,7 +294,7 @@ static struct miscdevice mon_dev = {
 
 static int __init mon_init(void)
 {
-	if (!MACHINE_IS_VM)
+	if (!machine_is_vm())
 		return -ENODEV;
 	/*
 	 * misc_register() has to be the last action in module_init(), because
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index ba3d7114b34f..d2ce7f80ae8d 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -17,6 +17,7 @@
 #include <linux/types.h>
 #include <linux/wait.h>
 
+#include <asm/machine.h>
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
 #include <asm/ebcdic.h>
@@ -618,7 +619,7 @@ static void raw3270_reset_device_cb(struct raw3270_request *rq, void *data)
 	if (rq->rc) {
 		/* Reset command failed. */
 		rp->state = RAW3270_STATE_INIT;
-	} else if (MACHINE_IS_VM) {
+	} else if (machine_is_vm()) {
 		raw3270_size_device_vm(rp);
 		raw3270_size_device_done(rp);
 	} else {
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index 07a6e8a7f05a..b31a680e0871 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -12,6 +12,7 @@
 #include <linux/types.h>
 #include <linux/list.h>
 #include <asm/asm-extable.h>
+#include <asm/machine.h>
 #include <asm/sclp.h>
 #include <asm/ebcdic.h>
 #include <asm/asm.h>
@@ -317,7 +318,7 @@ static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
 	int cc, exception;
 
 	exception = 1;
-	asm volatile(
+	asm_inline volatile(
 		"0:	.insn	rre,0xb2200000,%[cmd],%[sccb]\n" /* servc */
 		"1:	lhi	%[exc],0\n"
 		"2:\n"
@@ -342,21 +343,21 @@ static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
 static inline unsigned char
 sclp_ascebc(unsigned char ch)
 {
-	return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
+	return (machine_is_vm()) ? _ascebc[ch] : _ascebc_500[ch];
 }
 
 /* translate string from EBCDIC to ASCII */
 static inline void
 sclp_ebcasc_str(char *str, int nr)
 {
-	(MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
+	(machine_is_vm()) ? EBCASC(str, nr) : EBCASC_500(str, nr);
 }
 
 /* translate string from ASCII to EBCDIC */
 static inline void
 sclp_ascebc_str(char *str, int nr)
 {
-	(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
+	(machine_is_vm()) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
 }
 
 static inline struct gds_vector *
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index f905a6643a0f..9fcdce9bb35f 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -8,6 +8,7 @@
 #define KMSG_COMPONENT "sclp_cmd"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/cpufeature.h>
 #include <linux/completion.h>
 #include <linux/init.h>
 #include <linux/errno.h>
@@ -428,7 +429,7 @@ static void __init add_memory_merged(u16 rn)
 		goto skip_add;
 	for (addr = start; addr < start + size; addr += block_size)
 		add_memory(0, addr, block_size,
-			   MACHINE_HAS_EDAT1 ?
+			   cpu_has_edat1() ?
 			   MHP_MEMMAP_ON_MEMORY | MHP_OFFLINE_INACCESSIBLE : MHP_NONE);
 skip_add:
 	first_rn = rn;
diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c
index e5d947c763ea..6a030ba38bf3 100644
--- a/drivers/s390/char/sclp_con.c
+++ b/drivers/s390/char/sclp_con.c
@@ -264,6 +264,19 @@ static struct console sclp_console =
 };
 
 /*
+ *  Release allocated pages.
+ */
+static void __init __sclp_console_free_pages(void)
+{
+	struct list_head *page, *p;
+
+	list_for_each_safe(page, p, &sclp_con_pages) {
+		list_del(page);
+		free_page((unsigned long)page);
+	}
+}
+
+/*
  * called by console_init() in drivers/char/tty_io.c at boot-time.
  */
 static int __init
@@ -282,6 +295,10 @@ sclp_console_init(void)
 	/* Allocate pages for output buffering */
 	for (i = 0; i < sclp_console_pages; i++) {
 		page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+		if (!page) {
+			__sclp_console_free_pages();
+			return -ENOMEM;
+		}
 		list_add_tail(page, &sclp_con_pages);
 	}
 	sclp_conbuf = NULL;
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index d9d6edaf8de8..93b2d20d720c 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -50,10 +50,6 @@ static void __init sclp_early_facilities_detect(void)
 	sclp.has_aeni = !!(sccb->fac118 & 0x20);
 	sclp.has_aisi = !!(sccb->fac118 & 0x10);
 	sclp.has_zpci_lsi = !!(sccb->fac118 & 0x01);
-	if (sccb->fac85 & 0x02)
-		get_lowcore()->machine_flags |= MACHINE_FLAG_ESOP;
-	if (sccb->fac91 & 0x40)
-		get_lowcore()->machine_flags |= MACHINE_FLAG_TLB_GUEST;
 	sclp.has_diag204_bif = !!(sccb->fac98 & 0x80);
 	sclp.has_diag310 = !!(sccb->fac91 & 0x80);
 	if (sccb->cpuoff > 134) {
@@ -78,7 +74,7 @@ static void __init sclp_early_facilities_detect(void)
 		sclp.hamax = U64_MAX;
 
 	if (!sccb->hcpua) {
-		if (MACHINE_IS_VM)
+		if (machine_is_vm())
 			sclp.max_cores = 64;
 		else
 			sclp.max_cores = sccb->ncpurl;
diff --git a/drivers/s390/char/sclp_early_core.c b/drivers/s390/char/sclp_early_core.c
index 5a5383cceb6f..b5bd40f13c75 100644
--- a/drivers/s390/char/sclp_early_core.c
+++ b/drivers/s390/char/sclp_early_core.c
@@ -13,6 +13,7 @@
 #include <asm/sections.h>
 #include <asm/physmem_info.h>
 #include <asm/facility.h>
+#include <asm/machine.h>
 #include "sclp.h"
 #include "sclp_rw.h"
 
@@ -335,6 +336,18 @@ int __init sclp_early_get_hsa_size(unsigned long *hsa_size)
 	return 0;
 }
 
+void __init sclp_early_detect_machine_features(void)
+{
+	struct read_info_sccb *sccb = &sclp_info_sccb;
+
+	if (!sclp_info_sccb_valid)
+		return;
+	if (sccb->fac85 & 0x02)
+		set_machine_feature(MFEATURE_ESOP);
+	if (sccb->fac91 & 0x40)
+		set_machine_feature(MFEATURE_TLB_GUEST);
+}
+
 #define SCLP_STORAGE_INFO_FACILITY     0x0000400000000000UL
 
 void __weak __init add_physmem_online_range(u64 start, u64 end) {}
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 892c18d2f87e..0a92d08830e7 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -490,6 +490,17 @@ static const struct tty_operations sclp_ops = {
 	.flush_buffer = sclp_tty_flush_buffer,
 };
 
+/* Release allocated pages. */
+static void __init __sclp_tty_free_pages(void)
+{
+	struct list_head *page, *p;
+
+	list_for_each_safe(page, p, &sclp_tty_pages) {
+		list_del(page);
+		free_page((unsigned long)page);
+	}
+}
+
 static int __init
 sclp_tty_init(void)
 {
@@ -499,7 +510,7 @@ sclp_tty_init(void)
 	int rc;
 
 	/* z/VM multiplexes the line mode output on the 32xx screen */
-	if (MACHINE_IS_VM && !CONSOLE_IS_SCLP)
+	if (machine_is_vm() && !CONSOLE_IS_SCLP)
 		return 0;
 	if (!sclp.has_linemode)
 		return 0;
@@ -516,6 +527,7 @@ sclp_tty_init(void)
 	for (i = 0; i < MAX_KMEM_PAGES; i++) {
 		page = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
 		if (page == NULL) {
+			__sclp_tty_free_pages();
 			tty_driver_kref_put(driver);
 			return -ENOMEM;
 		}
@@ -524,7 +536,7 @@ sclp_tty_init(void)
 	timer_setup(&sclp_tty_timer, sclp_tty_timeout, 0);
 	sclp_ttybuf = NULL;
 	sclp_tty_buffer_count = 0;
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		/* case input lines to lowercase */
 		sclp_tty_tolower = 1;
 	}
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
index c6d58335beb4..3a695c5bf77f 100644
--- a/drivers/s390/char/vmcp.c
+++ b/drivers/s390/char/vmcp.c
@@ -23,6 +23,7 @@
 #include <linux/mutex.h>
 #include <linux/cma.h>
 #include <linux/mm.h>
+#include <asm/machine.h>
 #include <asm/cpcmd.h>
 #include <asm/debug.h>
 #include <asm/vmcp.h>
@@ -52,7 +53,7 @@ early_param("vmcp_cma", early_parse_vmcp_cma);
 
 void __init vmcp_cma_reserve(void)
 {
-	if (!MACHINE_IS_VM)
+	if (!machine_is_vm())
 		return;
 	cma_declare_contiguous(0, vmcp_cma_size, 0, 0, 0, false, "vmcp", &vmcp_cma);
 }
@@ -254,7 +255,7 @@ static int __init vmcp_init(void)
 {
 	int ret;
 
-	if (!MACHINE_IS_VM)
+	if (!machine_is_vm())
 		return 0;
 
 	vmcp_debug = debug_register("vmcp", 1, 1, 240);
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index b2d93a6e36c4..dac85294d2f5 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -23,6 +23,7 @@
 #include <linux/spinlock.h>
 #include <linux/atomic.h>
 #include <linux/uaccess.h>
+#include <asm/machine.h>
 #include <asm/cpcmd.h>
 #include <asm/debug.h>
 #include <asm/ebcdic.h>
@@ -809,7 +810,7 @@ static int __init vmlogrdr_init(void)
 	int i;
 	dev_t dev;
 
-	if (! MACHINE_IS_VM) {
+	if (!machine_is_vm()) {
 		pr_err("not running under VM, driver not loaded.\n");
 		return -ENODEV;
 	}
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index 90ba7a2b9cb4..0fd918769a4b 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -18,6 +18,7 @@
 #include <linux/kobject.h>
 
 #include <linux/uaccess.h>
+#include <asm/machine.h>
 #include <asm/cio.h>
 #include <asm/ccwdev.h>
 #include <asm/debug.h>
@@ -1009,7 +1010,7 @@ static int __init ur_init(void)
 	int rc;
 	dev_t dev;
 
-	if (!MACHINE_IS_VM) {
+	if (!machine_is_vm()) {
 		pr_err("The %s cannot be loaded without z/VM\n",
 		       ur_banner);
 		return -ENODEV;
diff --git a/drivers/s390/cio/crw.c b/drivers/s390/cio/crw.c
index 4916dd0a7eb1..3285ce636c5c 100644
--- a/drivers/s390/cio/crw.c
+++ b/drivers/s390/cio/crw.c
@@ -77,9 +77,8 @@ repeat:
 		if (unlikely(chain > 1)) {
 			struct crw tmp_crw;
 
-			printk(KERN_WARNING"%s: Code does not support more "
-			       "than two chained crws; please report to "
-			       "linux390@de.ibm.com!\n", __func__);
+			printk(KERN_WARNING "%s: Code does not support more than two chained crws\n",
+			       __func__);
 			ccode = stcrw(&tmp_crw);
 			printk(KERN_WARNING"%s: crw reports slct=%d, oflw=%d, "
 			       "chn=%d, rsc=%X, anc=%d, erc=%X, rsid=%X\n",
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index a512eac83485..d0f65d97dd4a 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -12,6 +12,7 @@
 #include <linux/string.h>
 #include <linux/types.h>
 #include <linux/errno.h>
+#include <asm/machine.h>
 #include <asm/ccwdev.h>
 #include <asm/setup.h>
 #include <asm/cio.h>
@@ -175,7 +176,7 @@ static void snsid_callback(struct ccw_device *cdev, void *data, int rc)
 	struct senseid *senseid = &cdev->private->dma_area->senseid;
 	int vm = 0;
 
-	if (rc && MACHINE_IS_VM) {
+	if (rc && machine_is_vm()) {
 		/* Try diag 0x210 fallback on z/VM. */
 		snsid_init(cdev);
 		if (diag210_get_dev_info(cdev) == 0) {
diff --git a/drivers/s390/cio/ioasm.c b/drivers/s390/cio/ioasm.c
index 5ff1e51cddf3..a540045b64a6 100644
--- a/drivers/s390/cio/ioasm.c
+++ b/drivers/s390/cio/ioasm.c
@@ -22,7 +22,7 @@ static inline int __stsch(struct subchannel_id schid, struct schib *addr)
 	int ccode, exception;
 
 	exception = 1;
-	asm volatile(
+	asm_inline volatile(
 		"	lgr	1,%[r1]\n"
 		"	stsch	%[addr]\n"
 		"0:	lhi	%[exc],0\n"
@@ -52,7 +52,7 @@ static inline int __msch(struct subchannel_id schid, struct schib *addr)
 	int ccode, exception;
 
 	exception = 1;
-	asm volatile(
+	asm_inline volatile(
 		"	lgr	1,%[r1]\n"
 		"	msch	%[addr]\n"
 		"0:	lhi	%[exc],0\n"
@@ -106,7 +106,7 @@ static inline int __ssch(struct subchannel_id schid, union orb *addr)
 	int ccode, exception;
 
 	exception = 1;
-	asm volatile(
+	asm_inline volatile(
 		"	lgr	1,%[r1]\n"
 		"	ssch	%[addr]\n"
 		"0:	lhi	%[exc],0\n"
@@ -178,7 +178,7 @@ int chsc(void *chsc_area)
 	int cc, exception;
 
 	exception = 1;
-	asm volatile(
+	asm_inline volatile(
 		"	.insn	rre,0xb25f0000,%[chsc_area],0\n"
 		"0:	lhi	%[exc],0\n"
 		"1:\n"
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 914dde041675..6ff5c9cfb7ed 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -171,7 +171,7 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
 		return -ENODEV;
 	}
 
-	parent = kzalloc(struct_size(parent, mdev_types, 1), GFP_KERNEL);
+	parent = kzalloc(sizeof(*parent), GFP_KERNEL);
 	if (!parent)
 		return -ENOMEM;
 
@@ -186,10 +186,10 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
 
 	parent->mdev_type.sysfs_name = "io";
 	parent->mdev_type.pretty_name = "I/O subchannel (Non-QDIO)";
-	parent->mdev_types[0] = &parent->mdev_type;
+	parent->mdev_types = &parent->mdev_type;
 	ret = mdev_register_parent(&parent->parent, &sch->dev,
 				   &vfio_ccw_mdev_driver,
-				   parent->mdev_types, 1);
+				   &parent->mdev_types, 1);
 	if (ret)
 		goto out_unreg;
 
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index b62bbc5c6376..0501d4bbcdbd 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -79,7 +79,7 @@ struct vfio_ccw_parent {
 
 	struct mdev_parent	parent;
 	struct mdev_type	mdev_type;
-	struct mdev_type	*mdev_types[];
+	struct mdev_type	*mdev_types;
 };
 
 /**
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 62feb2c639d5..1564cd7e3f59 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -26,6 +26,7 @@
 #include <linux/notifier.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
+#include <asm/machine.h>
 #include <asm/airq.h>
 #include <asm/tpi.h>
 #include <linux/atomic.h>
@@ -2324,7 +2325,7 @@ static inline int __init ap_async_init(void)
 	 * Setup the high resolution poll timer.
 	 * If we are running under z/VM adjust polling to z/VM polling rate.
 	 */
-	if (MACHINE_IS_VM)
+	if (machine_is_vm())
 		poll_high_timeout = 1500000;
 	hrtimer_setup(&ap_poll_timer, ap_poll_timeout, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
 
diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
index a52c2690933f..bc8669b5c304 100644
--- a/drivers/s390/crypto/vfio_ap_ops.c
+++ b/drivers/s390/crypto/vfio_ap_ops.c
@@ -650,13 +650,22 @@ static void vfio_ap_matrix_init(struct ap_config_info *info,
 	matrix->adm_max = info->apxa ? info->nd : 15;
 }
 
+static void signal_guest_ap_cfg_changed(struct ap_matrix_mdev *matrix_mdev)
+{
+	if (matrix_mdev->cfg_chg_trigger)
+		eventfd_signal(matrix_mdev->cfg_chg_trigger);
+}
+
 static void vfio_ap_mdev_update_guest_apcb(struct ap_matrix_mdev *matrix_mdev)
 {
-	if (matrix_mdev->kvm)
+	if (matrix_mdev->kvm) {
 		kvm_arch_crypto_set_masks(matrix_mdev->kvm,
 					  matrix_mdev->shadow_apcb.apm,
 					  matrix_mdev->shadow_apcb.aqm,
 					  matrix_mdev->shadow_apcb.adm);
+
+		signal_guest_ap_cfg_changed(matrix_mdev);
+	}
 }
 
 static bool vfio_ap_mdev_filter_cdoms(struct ap_matrix_mdev *matrix_mdev)
@@ -792,6 +801,7 @@ static int vfio_ap_mdev_probe(struct mdev_device *mdev)
 	if (ret)
 		goto err_put_vdev;
 	matrix_mdev->req_trigger = NULL;
+	matrix_mdev->cfg_chg_trigger = NULL;
 	dev_set_drvdata(&mdev->dev, matrix_mdev);
 	mutex_lock(&matrix_dev->mdevs_lock);
 	list_add(&matrix_mdev->node, &matrix_dev->mdev_list);
@@ -2046,6 +2056,13 @@ static void vfio_ap_mdev_request(struct vfio_device *vdev, unsigned int count)
 
 	matrix_mdev = container_of(vdev, struct ap_matrix_mdev, vdev);
 
+	get_update_locks_for_mdev(matrix_mdev);
+
+	if (matrix_mdev->kvm) {
+		kvm_arch_crypto_clear_masks(matrix_mdev->kvm);
+		signal_guest_ap_cfg_changed(matrix_mdev);
+	}
+
 	if (matrix_mdev->req_trigger) {
 		if (!(count % 10))
 			dev_notice_ratelimited(dev,
@@ -2057,6 +2074,8 @@ static void vfio_ap_mdev_request(struct vfio_device *vdev, unsigned int count)
 		dev_notice(dev,
 			   "No device request registered, blocked until released by user\n");
 	}
+
+	release_update_locks_for_mdev(matrix_mdev);
 }
 
 static int vfio_ap_mdev_get_device_info(unsigned long arg)
@@ -2097,6 +2116,10 @@ static ssize_t vfio_ap_get_irq_info(unsigned long arg)
 		info.count = 1;
 		info.flags = VFIO_IRQ_INFO_EVENTFD;
 		break;
+	case VFIO_AP_CFG_CHG_IRQ_INDEX:
+		info.count = 1;
+		info.flags = VFIO_IRQ_INFO_EVENTFD;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -2160,6 +2183,39 @@ static int vfio_ap_set_request_irq(struct ap_matrix_mdev *matrix_mdev,
 	return 0;
 }
 
+static int vfio_ap_set_cfg_change_irq(struct ap_matrix_mdev *matrix_mdev, unsigned long arg)
+{
+	s32 fd;
+	void __user *data;
+	unsigned long minsz;
+	struct eventfd_ctx *cfg_chg_trigger;
+
+	minsz = offsetofend(struct vfio_irq_set, count);
+	data = (void __user *)(arg + minsz);
+
+	if (get_user(fd, (s32 __user *)data))
+		return -EFAULT;
+
+	if (fd == -1) {
+		if (matrix_mdev->cfg_chg_trigger)
+			eventfd_ctx_put(matrix_mdev->cfg_chg_trigger);
+		matrix_mdev->cfg_chg_trigger = NULL;
+	} else if (fd >= 0) {
+		cfg_chg_trigger = eventfd_ctx_fdget(fd);
+		if (IS_ERR(cfg_chg_trigger))
+			return PTR_ERR(cfg_chg_trigger);
+
+		if (matrix_mdev->cfg_chg_trigger)
+			eventfd_ctx_put(matrix_mdev->cfg_chg_trigger);
+
+		matrix_mdev->cfg_chg_trigger = cfg_chg_trigger;
+	} else {
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int vfio_ap_set_irqs(struct ap_matrix_mdev *matrix_mdev,
 			    unsigned long arg)
 {
@@ -2175,6 +2231,8 @@ static int vfio_ap_set_irqs(struct ap_matrix_mdev *matrix_mdev,
 		switch (irq_set.index) {
 		case VFIO_AP_REQ_IRQ_INDEX:
 			return vfio_ap_set_request_irq(matrix_mdev, arg);
+		case VFIO_AP_CFG_CHG_IRQ_INDEX:
+			return vfio_ap_set_cfg_change_irq(matrix_mdev, arg);
 		default:
 			return -EINVAL;
 		}
@@ -2199,8 +2257,8 @@ static ssize_t vfio_ap_mdev_ioctl(struct vfio_device *vdev,
 		ret = vfio_ap_mdev_reset_queues(matrix_mdev);
 		break;
 	case VFIO_DEVICE_GET_IRQ_INFO:
-			ret = vfio_ap_get_irq_info(arg);
-			break;
+		ret = vfio_ap_get_irq_info(arg);
+		break;
 	case VFIO_DEVICE_SET_IRQS:
 		ret = vfio_ap_set_irqs(matrix_mdev, arg);
 		break;
@@ -2316,10 +2374,10 @@ int vfio_ap_mdev_register(void)
 
 	matrix_dev->mdev_type.sysfs_name = VFIO_AP_MDEV_TYPE_HWVIRT;
 	matrix_dev->mdev_type.pretty_name = VFIO_AP_MDEV_NAME_HWVIRT;
-	matrix_dev->mdev_types[0] = &matrix_dev->mdev_type;
+	matrix_dev->mdev_types = &matrix_dev->mdev_type;
 	ret = mdev_register_parent(&matrix_dev->parent, &matrix_dev->device,
 				   &vfio_ap_matrix_driver,
-				   matrix_dev->mdev_types, 1);
+				   &matrix_dev->mdev_types, 1);
 	if (ret)
 		goto err_driver;
 	return 0;
diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h
index 437a161c8659..9bff666b0b35 100644
--- a/drivers/s390/crypto/vfio_ap_private.h
+++ b/drivers/s390/crypto/vfio_ap_private.h
@@ -53,7 +53,7 @@ struct ap_matrix_dev {
 	struct mutex guests_lock; /* serializes access to each KVM guest */
 	struct mdev_parent parent;
 	struct mdev_type mdev_type;
-	struct mdev_type *mdev_types[1];
+	struct mdev_type *mdev_types;
 };
 
 extern struct ap_matrix_dev *matrix_dev;
@@ -105,6 +105,7 @@ struct ap_queue_table {
  * @mdev:	the mediated device
  * @qtable:	table of queues (struct vfio_ap_queue) assigned to the mdev
  * @req_trigger eventfd ctx for signaling userspace to return a device
+ * @cfg_chg_trigger eventfd ctx to signal AP config changed to userspace
  * @apm_add:	bitmap of APIDs added to the host's AP configuration
  * @aqm_add:	bitmap of APQIs added to the host's AP configuration
  * @adm_add:	bitmap of control domain numbers added to the host's AP
@@ -120,6 +121,7 @@ struct ap_matrix_mdev {
 	struct mdev_device *mdev;
 	struct ap_queue_table qtable;
 	struct eventfd_ctx *req_trigger;
+	struct eventfd_ctx *cfg_chg_trigger;
 	DECLARE_BITMAP(apm_add, AP_DEVICES);
 	DECLARE_BITMAP(aqm_add, AP_DOMAINS);
 	DECLARE_BITMAP(adm_add, AP_DOMAINS);
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 75910c0bcc2b..777404d66e0c 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -22,6 +22,7 @@
 #include <linux/hash.h>
 #include <linux/hashtable.h>
 #include <net/switchdev.h>
+#include <asm/machine.h>
 #include <asm/chsc.h>
 #include <asm/css_chars.h>
 #include <asm/setup.h>
@@ -299,7 +300,7 @@ static int qeth_l2_request_initial_mac(struct qeth_card *card)
 
 	QETH_CARD_TEXT(card, 2, "l2reqmac");
 
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		rc = qeth_vm_request_mac(card);
 		if (!rc)
 			goto out;
diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
index c84ec2fbf99b..c68ba8dbc014 100644
--- a/drivers/s390/net/smsgiucv.c
+++ b/drivers/s390/net/smsgiucv.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/slab.h>
 #include <net/iucv/iucv.h>
+#include <asm/machine.h>
 #include <asm/cpcmd.h>
 #include <asm/ebcdic.h>
 #include "smsgiucv.h"
@@ -138,7 +139,7 @@ static int __init smsg_init(void)
 {
 	int rc;
 
-	if (!MACHINE_IS_VM) {
+	if (!machine_is_vm()) {
 		rc = -EPROTONOSUPPORT;
 		goto out;
 	}
diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c
index cc44cbb0028b..4bd4d6bfc126 100644
--- a/drivers/s390/net/smsgiucv_app.c
+++ b/drivers/s390/net/smsgiucv_app.c
@@ -23,6 +23,7 @@
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
 #include <net/iucv/iucv.h>
+#include <asm/machine.h>
 #include "smsgiucv.h"
 
 /* prefix used for SMSG registration */
@@ -153,7 +154,7 @@ static int __init smsgiucv_app_init(void)
 	struct device_driver *smsgiucv_drv;
 	int rc;
 
-	if (!MACHINE_IS_VM)
+	if (!machine_is_vm())
 		return -ENODEV;
 
 	smsgiucv_drv = driver_find(SMSGIUCV_DRV_NAME, &iucv_bus);
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index ab2f35bc294d..22074e81bd38 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -41,7 +41,7 @@
 
 #define ZFCP_BUS_ID_SIZE	20
 
-MODULE_AUTHOR("IBM Deutschland Entwicklung GmbH - linux390@de.ibm.com");
+MODULE_AUTHOR("IBM Corporation");
 MODULE_DESCRIPTION("FCP HBA driver");
 MODULE_LICENSE("GPL");
 
diff --git a/drivers/tty/hvc/hvc_iucv.c b/drivers/tty/hvc/hvc_iucv.c
index ed4bf40278a7..4ca7472c38e0 100644
--- a/drivers/tty/hvc/hvc_iucv.c
+++ b/drivers/tty/hvc/hvc_iucv.c
@@ -24,6 +24,7 @@
 #include <linux/tty.h>
 #include <linux/wait.h>
 #include <net/iucv/iucv.h>
+#include <asm/machine.h>
 
 #include "hvc_console.h"
 
@@ -1240,7 +1241,7 @@ static int param_set_vmidfilter(const char *val, const struct kernel_param *kp)
 {
 	int rc;
 
-	if (!MACHINE_IS_VM || !hvc_iucv_devices)
+	if (!machine_is_vm() || !hvc_iucv_devices)
 		return -ENODEV;
 
 	if (!val)
@@ -1269,7 +1270,7 @@ static int param_get_vmidfilter(char *buffer, const struct kernel_param *kp)
 	size_t index, len;
 	void *start, *end;
 
-	if (!MACHINE_IS_VM || !hvc_iucv_devices)
+	if (!machine_is_vm() || !hvc_iucv_devices)
 		return -ENODEV;
 
 	rc = 0;
@@ -1306,7 +1307,7 @@ static int __init hvc_iucv_init(void)
 	if (!hvc_iucv_devices)
 		return -ENODEV;
 
-	if (!MACHINE_IS_VM) {
+	if (!machine_is_vm()) {
 		pr_notice("The z/VM IUCV HVC device driver cannot "
 			   "be used without z/VM\n");
 		rc = -ENODEV;
diff --git a/drivers/watchdog/diag288_wdt.c b/drivers/watchdog/diag288_wdt.c
index 4631d0a3866a..76dffc89c641 100644
--- a/drivers/watchdog/diag288_wdt.c
+++ b/drivers/watchdog/diag288_wdt.c
@@ -27,6 +27,7 @@
 #include <linux/moduleparam.h>
 #include <linux/slab.h>
 #include <linux/watchdog.h>
+#include <asm/machine.h>
 #include <asm/ebcdic.h>
 #include <asm/diag.h>
 #include <linux/io.h>
@@ -110,7 +111,7 @@ static int wdt_start(struct watchdog_device *dev)
 	int ret;
 	unsigned int func;
 
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		func = conceal_on ? (WDT_FUNC_INIT | WDT_FUNC_CONCEAL)
 			: WDT_FUNC_INIT;
 		ret = diag288_str(func, dev->timeout, wdt_cmd);
@@ -136,7 +137,7 @@ static int wdt_ping(struct watchdog_device *dev)
 	int ret;
 	unsigned int func;
 
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		/*
 		 * It seems to be ok to z/VM to use the init function to
 		 * retrigger the watchdog. On LPAR WDT_FUNC_CHANGE must
@@ -192,7 +193,7 @@ static int __init diag288_init(void)
 
 	watchdog_set_nowayout(&wdt_dev, nowayout_info);
 
-	if (MACHINE_IS_VM) {
+	if (machine_is_vm()) {
 		cmd_buf = kmalloc(MAX_CMDLEN, GFP_KERNEL);
 		if (!cmd_buf) {
 			pr_err("The watchdog cannot be initialized\n");