Merge tag 's390-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Add ABI to kernel image file which allows e.g. the file utility to
   figure out the kernel version.

 - Wire up clone3 system call.

 - Add support for kasan bitops instrumentation.

 - uapi header cleanup: use __u{16,32,64} instead of uint{16,32,64}_t.

 - Provide proper ARCH_ZONE_DMA_BITS so the s390 DMA zone is correctly
   defined with 2 GB instead of the default value of 1 MB.

 - Farhan Ali leaves the group of vfio-ccw maintainers.

 - Various small vfio-ccw fixes.

 - Add missing locking for airq_areas array in virtio code.

 - Minor qdio improvements.

* tag 's390-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  MAINTAINERS: vfio-ccw: Remove myself as the maintainer
  s390/mm: use shared variables for sysctl range check
  virtio/s390: fix race on airq_areas[]
  s390/dma: provide proper ARCH_ZONE_DMA_BITS value
  s390/kasan: add bitops instrumentation
  s390/bitops: make test functions return bool
  s390: wire up clone3 system call
  kbuild: enable arch/s390/include/uapi/asm/zcrypt.h for uapi header test
  s390: use __u{16,32,64} instead of uint{16,32,64}_t in uapi header
  s390/hypfs: fix a typo in the name of a function
  s390/qdio: restrict QAOB usage to IQD unicast queues
  s390/qdio: add sanity checks to the fast-requeue path
  s390: enable detection of kernel version from bzImage
  Documentation: fix vfio-ccw doc
  vfio-ccw: Update documentation for csch/hsch
  vfio-ccw: Don't call cp_free if we are processing a channel program
  vfio-ccw: Set pa_nr to 0 if memory allocation fails for pa_iova_pfn
  vfio-ccw: Fix memory leak and don't call cp_free in cp_init
  vfio-ccw: Fix misleading comment when setting orb.cmd.c64

12 files changed, 79 insertions, 59 deletions

diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile
index 7cba96e7587b..4cf0bddb7d92 100644
--- a/arch/s390/boot/Makefile
+++ b/arch/s390/boot/Makefile
@@ -36,7 +36,7 @@ CFLAGS_sclp_early_core.o += -I$(srctree)/drivers/s390/char
 
 obj-y	:= head.o als.o startup.o mem_detect.o ipl_parm.o ipl_report.o
 obj-y	+= string.o ebcdic.o sclp_early_core.o mem.o ipl_vmparm.o cmdline.o
-obj-y	+= ctype.o text_dma.o
+obj-y	+= version.o ctype.o text_dma.o
 obj-$(CONFIG_PROTECTED_VIRTUALIZATION_GUEST)	+= uv.o
 obj-$(CONFIG_RELOCATABLE)	+= machine_kexec_reloc.o
 obj-$(CONFIG_RANDOMIZE_BASE)	+= kaslr.o
diff --git a/arch/s390/boot/boot.h b/arch/s390/boot/boot.h
index ad57c2205a71..082905d97309 100644
--- a/arch/s390/boot/boot.h
+++ b/arch/s390/boot/boot.h
@@ -12,6 +12,7 @@ void print_missing_facilities(void);
 unsigned long get_random_base(unsigned long safe_addr);
 
 extern int kaslr_enabled;
+extern const char kernel_version[];
 
 unsigned long read_ipl_report(unsigned long safe_offset);
 
diff --git a/arch/s390/boot/head.S b/arch/s390/boot/head.S
index 028aab03a9e7..2087bed6e60f 100644
--- a/arch/s390/boot/head.S
+++ b/arch/s390/boot/head.S
@@ -361,6 +361,7 @@ ENTRY(startup_kdump)
 	.quad	0			# INITRD_SIZE
 	.quad	0			# OLDMEM_BASE
 	.quad	0			# OLDMEM_SIZE
+	.quad	kernel_version		# points to kernel version string
 
 	.org	COMMAND_LINE
 	.byte	"root=/dev/ram0 ro"
diff --git a/arch/s390/boot/version.c b/arch/s390/boot/version.c
new file mode 100644
index 000000000000..d32e58bdda6a
--- /dev/null
+++ b/arch/s390/boot/version.c
@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <generated/utsrelease.h>
+#include <generated/compile.h>
+#include "boot.h"
+
+const char kernel_version[] = UTS_RELEASE
+	" (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ") " UTS_VERSION;
diff --git a/arch/s390/hypfs/hypfs_vm.c b/arch/s390/hypfs/hypfs_vm.c
index 42f2375c203e..e1fcc03159ef 100644
--- a/arch/s390/hypfs/hypfs_vm.c
+++ b/arch/s390/hypfs/hypfs_vm.c
@@ -118,7 +118,7 @@ do { \
 		return PTR_ERR(rc); \
 } while(0)
 
-static int hpyfs_vm_create_guest(struct dentry *systems_dir,
+static int hypfs_vm_create_guest(struct dentry *systems_dir,
 				 struct diag2fc_data *data)
 {
 	char guest_name[NAME_LEN + 1] = {};
@@ -219,7 +219,7 @@ int hypfs_vm_create_files(struct dentry *root)
 	}
 
 	for (i = 0; i < count; i++) {
-		rc = hpyfs_vm_create_guest(dir, &(data[i]));
+		rc = hypfs_vm_create_guest(dir, &(data[i]));
 		if (rc)
 			goto failed;
 	}
diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h
index 9900d655014c..b8833ac983fa 100644
--- a/arch/s390/include/asm/bitops.h
+++ b/arch/s390/include/asm/bitops.h
@@ -35,6 +35,7 @@
 
 #include <linux/typecheck.h>
 #include <linux/compiler.h>
+#include <linux/types.h>
 #include <asm/atomic_ops.h>
 #include <asm/barrier.h>
 
@@ -55,7 +56,7 @@ __bitops_byte(unsigned long nr, volatile unsigned long *ptr)
 	return ((unsigned char *)ptr) + ((nr ^ (BITS_PER_LONG - 8)) >> 3);
 }
 
-static inline void set_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline void arch_set_bit(unsigned long nr, volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
 	unsigned long mask;
@@ -76,7 +77,7 @@ static inline void set_bit(unsigned long nr, volatile unsigned long *ptr)
 	__atomic64_or(mask, (long *)addr);
 }
 
-static inline void clear_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline void arch_clear_bit(unsigned long nr, volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
 	unsigned long mask;
@@ -97,7 +98,8 @@ static inline void clear_bit(unsigned long nr, volatile unsigned long *ptr)
 	__atomic64_and(mask, (long *)addr);
 }
 
-static inline void change_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline void arch_change_bit(unsigned long nr,
+				   volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
 	unsigned long mask;
@@ -118,8 +120,8 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *ptr)
 	__atomic64_xor(mask, (long *)addr);
 }
 
-static inline int
-test_and_set_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline bool arch_test_and_set_bit(unsigned long nr,
+					 volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
 	unsigned long old, mask;
@@ -129,8 +131,8 @@ test_and_set_bit(unsigned long nr, volatile unsigned long *ptr)
 	return (old & mask) != 0;
 }
 
-static inline int
-test_and_clear_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline bool arch_test_and_clear_bit(unsigned long nr,
+					   volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
 	unsigned long old, mask;
@@ -140,8 +142,8 @@ test_and_clear_bit(unsigned long nr, volatile unsigned long *ptr)
 	return (old & ~mask) != 0;
 }
 
-static inline int
-test_and_change_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline bool arch_test_and_change_bit(unsigned long nr,
+					    volatile unsigned long *ptr)
 {
 	unsigned long *addr = __bitops_word(nr, ptr);
 	unsigned long old, mask;
@@ -151,30 +153,31 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *ptr)
 	return (old & mask) != 0;
 }
 
-static inline void __set_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline void arch___set_bit(unsigned long nr, volatile unsigned long *ptr)
 {
 	unsigned char *addr = __bitops_byte(nr, ptr);
 
 	*addr |= 1 << (nr & 7);
 }
 
-static inline void 
-__clear_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline void arch___clear_bit(unsigned long nr,
+				    volatile unsigned long *ptr)
 {
 	unsigned char *addr = __bitops_byte(nr, ptr);
 
 	*addr &= ~(1 << (nr & 7));
 }
 
-static inline void __change_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline void arch___change_bit(unsigned long nr,
+				     volatile unsigned long *ptr)
 {
 	unsigned char *addr = __bitops_byte(nr, ptr);
 
 	*addr ^= 1 << (nr & 7);
 }
 
-static inline int
-__test_and_set_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline bool arch___test_and_set_bit(unsigned long nr,
+					   volatile unsigned long *ptr)
 {
 	unsigned char *addr = __bitops_byte(nr, ptr);
 	unsigned char ch;
@@ -184,8 +187,8 @@ __test_and_set_bit(unsigned long nr, volatile unsigned long *ptr)
 	return (ch >> (nr & 7)) & 1;
 }
 
-static inline int
-__test_and_clear_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline bool arch___test_and_clear_bit(unsigned long nr,
+					     volatile unsigned long *ptr)
 {
 	unsigned char *addr = __bitops_byte(nr, ptr);
 	unsigned char ch;
@@ -195,8 +198,8 @@ __test_and_clear_bit(unsigned long nr, volatile unsigned long *ptr)
 	return (ch >> (nr & 7)) & 1;
 }
 
-static inline int
-__test_and_change_bit(unsigned long nr, volatile unsigned long *ptr)
+static inline bool arch___test_and_change_bit(unsigned long nr,
+					      volatile unsigned long *ptr)
 {
 	unsigned char *addr = __bitops_byte(nr, ptr);
 	unsigned char ch;
@@ -206,7 +209,8 @@ __test_and_change_bit(unsigned long nr, volatile unsigned long *ptr)
 	return (ch >> (nr & 7)) & 1;
 }
 
-static inline int test_bit(unsigned long nr, const volatile unsigned long *ptr)
+static inline bool arch_test_bit(unsigned long nr,
+				 const volatile unsigned long *ptr)
 {
 	const volatile unsigned char *addr;
 
@@ -215,28 +219,30 @@ static inline int test_bit(unsigned long nr, const volatile unsigned long *ptr)
 	return (*addr >> (nr & 7)) & 1;
 }
 
-static inline int test_and_set_bit_lock(unsigned long nr,
-					volatile unsigned long *ptr)
+static inline bool arch_test_and_set_bit_lock(unsigned long nr,
+					      volatile unsigned long *ptr)
 {
-	if (test_bit(nr, ptr))
+	if (arch_test_bit(nr, ptr))
 		return 1;
-	return test_and_set_bit(nr, ptr);
+	return arch_test_and_set_bit(nr, ptr);
 }
 
-static inline void clear_bit_unlock(unsigned long nr,
-				    volatile unsigned long *ptr)
+static inline void arch_clear_bit_unlock(unsigned long nr,
+					 volatile unsigned long *ptr)
 {
 	smp_mb__before_atomic();
-	clear_bit(nr, ptr);
+	arch_clear_bit(nr, ptr);
 }
 
-static inline void __clear_bit_unlock(unsigned long nr,
-				      volatile unsigned long *ptr)
+static inline void arch___clear_bit_unlock(unsigned long nr,
+					   volatile unsigned long *ptr)
 {
 	smp_mb();
-	__clear_bit(nr, ptr);
+	arch___clear_bit(nr, ptr);
 }
 
+#include <asm-generic/bitops-instrumented.h>
+
 /*
  * Functions which use MSB0 bit numbering.
  * The bits are numbered:
@@ -261,7 +267,8 @@ static inline void clear_bit_inv(unsigned long nr, volatile unsigned long *ptr)
 	return clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
 }
 
-static inline int test_and_clear_bit_inv(unsigned long nr, volatile unsigned long *ptr)
+static inline bool test_and_clear_bit_inv(unsigned long nr,
+					  volatile unsigned long *ptr)
 {
 	return test_and_clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
 }
@@ -276,8 +283,8 @@ static inline void __clear_bit_inv(unsigned long nr, volatile unsigned long *ptr
 	return __clear_bit(nr ^ (BITS_PER_LONG - 1), ptr);
 }
 
-static inline int test_bit_inv(unsigned long nr,
-			       const volatile unsigned long *ptr)
+static inline bool test_bit_inv(unsigned long nr,
+				const volatile unsigned long *ptr)
 {
 	return test_bit(nr ^ (BITS_PER_LONG - 1), ptr);
 }
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index a4d38092530a..823578c6b9e2 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -177,6 +177,8 @@ static inline int devmem_is_allowed(unsigned long pfn)
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
+#define ARCH_ZONE_DMA_BITS	31
+
 #include <asm-generic/memory_model.h>
 #include <asm-generic/getorder.h>
 
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 82deb8fc8319..c5cfff7b1f91 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -54,6 +54,7 @@
 #define INITRD_SIZE_OFFSET	0x10410
 #define OLDMEM_BASE_OFFSET	0x10418
 #define OLDMEM_SIZE_OFFSET	0x10420
+#define KERNEL_VERSION_OFFSET	0x10428
 #define COMMAND_LINE_OFFSET	0x10480
 
 #ifndef __ASSEMBLY__
@@ -74,7 +75,8 @@ struct parmarea {
 	unsigned long initrd_size;			/* 0x10410 */
 	unsigned long oldmem_base;			/* 0x10418 */
 	unsigned long oldmem_size;			/* 0x10420 */
-	char pad1[0x10480 - 0x10428];			/* 0x10428 - 0x10480 */
+	unsigned long kernel_version;			/* 0x10428 */
+	char pad1[0x10480 - 0x10430];			/* 0x10430 - 0x10480 */
 	char command_line[ARCH_COMMAND_LINE_SIZE];	/* 0x10480 */
 };
 
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index b6755685c7b8..9e9f75ef046a 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -34,5 +34,6 @@
 #define __ARCH_WANT_SYS_FORK
 #define __ARCH_WANT_SYS_VFORK
 #define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_SYS_CLONE3
 
 #endif /* _ASM_S390_UNISTD_H_ */
diff --git a/arch/s390/include/uapi/asm/zcrypt.h b/arch/s390/include/uapi/asm/zcrypt.h
index 494c34c50716..8c5755f41dde 100644
--- a/arch/s390/include/uapi/asm/zcrypt.h
+++ b/arch/s390/include/uapi/asm/zcrypt.h
@@ -20,6 +20,7 @@
 
 #include <linux/ioctl.h>
 #include <linux/compiler.h>
+#include <linux/types.h>
 
 /* Name of the zcrypt device driver. */
 #define ZCRYPT_NAME "zcrypt"
@@ -160,17 +161,17 @@ struct ica_xcRB {
  * @payload_len:	Payload length
  */
 struct ep11_cprb {
-	uint16_t	cprb_len;
+	__u16		cprb_len;
 	unsigned char	cprb_ver_id;
 	unsigned char	pad_000[2];
 	unsigned char	flags;
 	unsigned char	func_id[2];
-	uint32_t	source_id;
-	uint32_t	target_id;
-	uint32_t	ret_code;
-	uint32_t	reserved1;
-	uint32_t	reserved2;
-	uint32_t	payload_len;
+	__u32		source_id;
+	__u32		target_id;
+	__u32		ret_code;
+	__u32		reserved1;
+	__u32		reserved2;
+	__u32		payload_len;
 } __attribute__((packed));
 
 /**
@@ -179,8 +180,8 @@ struct ep11_cprb {
  * @dom_id:	Usage domain id
  */
 struct ep11_target_dev {
-	uint16_t ap_id;
-	uint16_t dom_id;
+	__u16 ap_id;
+	__u16 dom_id;
 };
 
 /**
@@ -195,14 +196,14 @@ struct ep11_target_dev {
  * @resp:		Addr to response block
  */
 struct ep11_urb {
-	uint16_t		targets_num;
-	uint64_t		targets;
-	uint64_t		weight;
-	uint64_t		req_no;
-	uint64_t		req_len;
-	uint64_t		req;
-	uint64_t		resp_len;
-	uint64_t		resp;
+	__u16		targets_num;
+	__u64		targets;
+	__u64		weight;
+	__u64		req_no;
+	__u64		req_len;
+	__u64		req;
+	__u64		resp_len;
+	__u64		resp;
 } __attribute__((packed));
 
 /**
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index a90d3e945445..3054e9c035a3 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -437,4 +437,4 @@
 432  common	fsmount			sys_fsmount			sys_fsmount
 433  common	fspick			sys_fspick			sys_fspick
 434  common	pidfd_open		sys_pidfd_open			sys_pidfd_open
-# 435 reserved for clone3
+435  common	clone3			sys_clone3			sys_clone3
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 99e06213a22b..54fcdf66ae96 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -17,8 +17,6 @@
 
 #ifdef CONFIG_PGSTE
 
-static int page_table_allocate_pgste_min = 0;
-static int page_table_allocate_pgste_max = 1;
 int page_table_allocate_pgste = 0;
 EXPORT_SYMBOL(page_table_allocate_pgste);
 
@@ -29,8 +27,8 @@ static struct ctl_table page_table_sysctl[] = {
 		.maxlen		= sizeof(int),
 		.mode		= S_IRUGO | S_IWUSR,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= &page_table_allocate_pgste_min,
-		.extra2		= &page_table_allocate_pgste_max,
+		.extra1		= SYSCTL_ZERO,
+		.extra2		= SYSCTL_ONE,
 	},
 	{ }
 };