v4.19.13 snapshot.
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
new file mode 100644
index 0000000..97db2fb
--- /dev/null
+++ b/arch/s390/include/asm/compat.h
@@ -0,0 +1,276 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_S390X_COMPAT_H
+#define _ASM_S390X_COMPAT_H
+/*
+ * Architecture specific compatibility types
+ */
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/sched/task_stack.h>
+#include <linux/thread_info.h>
+
+#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
+ typeof(0?(__force t)0:0ULL), u64))
+
+#define __SC_DELOUSE(t,v) ({ \
+ BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
+ (__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
+})
+
+#define PSW32_MASK_PER 0x40000000UL
+#define PSW32_MASK_DAT 0x04000000UL
+#define PSW32_MASK_IO 0x02000000UL
+#define PSW32_MASK_EXT 0x01000000UL
+#define PSW32_MASK_KEY 0x00F00000UL
+#define PSW32_MASK_BASE 0x00080000UL /* Always one */
+#define PSW32_MASK_MCHECK 0x00040000UL
+#define PSW32_MASK_WAIT 0x00020000UL
+#define PSW32_MASK_PSTATE 0x00010000UL
+#define PSW32_MASK_ASC 0x0000C000UL
+#define PSW32_MASK_CC 0x00003000UL
+#define PSW32_MASK_PM 0x00000f00UL
+#define PSW32_MASK_RI 0x00000080UL
+
+#define PSW32_MASK_USER 0x0000FF00UL
+
+#define PSW32_ADDR_AMODE 0x80000000UL
+#define PSW32_ADDR_INSN 0x7FFFFFFFUL
+
+#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)
+
+#define PSW32_ASC_PRIMARY 0x00000000UL
+#define PSW32_ASC_ACCREG 0x00004000UL
+#define PSW32_ASC_SECONDARY 0x00008000UL
+#define PSW32_ASC_HOME 0x0000C000UL
+
+#define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
+ PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
+ PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
+ PSW32_ASC_PRIMARY)
+
+#define COMPAT_USER_HZ 100
+#define COMPAT_UTS_MACHINE "s390\0\0\0\0"
+
+typedef u32 compat_size_t;
+typedef s32 compat_ssize_t;
+typedef s32 compat_clock_t;
+typedef s32 compat_pid_t;
+typedef u16 __compat_uid_t;
+typedef u16 __compat_gid_t;
+typedef u32 __compat_uid32_t;
+typedef u32 __compat_gid32_t;
+typedef u16 compat_mode_t;
+typedef u32 compat_ino_t;
+typedef u16 compat_dev_t;
+typedef s32 compat_off_t;
+typedef s64 compat_loff_t;
+typedef u16 compat_nlink_t;
+typedef u16 compat_ipc_pid_t;
+typedef s32 compat_daddr_t;
+typedef u32 compat_caddr_t;
+typedef __kernel_fsid_t compat_fsid_t;
+typedef s32 compat_key_t;
+typedef s32 compat_timer_t;
+
+typedef s32 compat_int_t;
+typedef s32 compat_long_t;
+typedef s64 compat_s64;
+typedef u32 compat_uint_t;
+typedef u32 compat_ulong_t;
+typedef u64 compat_u64;
+typedef u32 compat_uptr_t;
+
+typedef struct {
+ u32 mask;
+ u32 addr;
+} __aligned(8) psw_compat_t;
+
+typedef struct {
+ psw_compat_t psw;
+ u32 gprs[NUM_GPRS];
+ u32 acrs[NUM_ACRS];
+ u32 orig_gpr2;
+} s390_compat_regs;
+
+typedef struct {
+ u32 gprs_high[NUM_GPRS];
+} s390_compat_regs_high;
+
+struct compat_stat {
+ compat_dev_t st_dev;
+ u16 __pad1;
+ compat_ino_t st_ino;
+ compat_mode_t st_mode;
+ compat_nlink_t st_nlink;
+ __compat_uid_t st_uid;
+ __compat_gid_t st_gid;
+ compat_dev_t st_rdev;
+ u16 __pad2;
+ u32 st_size;
+ u32 st_blksize;
+ u32 st_blocks;
+ u32 st_atime;
+ u32 st_atime_nsec;
+ u32 st_mtime;
+ u32 st_mtime_nsec;
+ u32 st_ctime;
+ u32 st_ctime_nsec;
+ u32 __unused4;
+ u32 __unused5;
+};
+
+struct compat_flock {
+ short l_type;
+ short l_whence;
+ compat_off_t l_start;
+ compat_off_t l_len;
+ compat_pid_t l_pid;
+};
+
+#define F_GETLK64 12
+#define F_SETLK64 13
+#define F_SETLKW64 14
+
+struct compat_flock64 {
+ short l_type;
+ short l_whence;
+ compat_loff_t l_start;
+ compat_loff_t l_len;
+ compat_pid_t l_pid;
+};
+
+struct compat_statfs {
+ u32 f_type;
+ u32 f_bsize;
+ u32 f_blocks;
+ u32 f_bfree;
+ u32 f_bavail;
+ u32 f_files;
+ u32 f_ffree;
+ compat_fsid_t f_fsid;
+ u32 f_namelen;
+ u32 f_frsize;
+ u32 f_flags;
+ u32 f_spare[4];
+};
+
+struct compat_statfs64 {
+ u32 f_type;
+ u32 f_bsize;
+ u64 f_blocks;
+ u64 f_bfree;
+ u64 f_bavail;
+ u64 f_files;
+ u64 f_ffree;
+ compat_fsid_t f_fsid;
+ u32 f_namelen;
+ u32 f_frsize;
+ u32 f_flags;
+ u32 f_spare[4];
+};
+
+#define COMPAT_RLIM_INFINITY 0xffffffff
+
+typedef u32 compat_old_sigset_t; /* at least 32 bits */
+
+#define _COMPAT_NSIG 64
+#define _COMPAT_NSIG_BPW 32
+
+typedef u32 compat_sigset_word;
+
+#define COMPAT_OFF_T_MAX 0x7fffffff
+
+/*
+ * A pointer passed in from user mode. This should not
+ * be used for syscall parameters, just declare them
+ * as pointers because the syscall entry code will have
+ * appropriately converted them already.
+ */
+
+static inline void __user *compat_ptr(compat_uptr_t uptr)
+{
+ return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
+}
+
+static inline compat_uptr_t ptr_to_compat(void __user *uptr)
+{
+ return (u32)(unsigned long)uptr;
+}
+
+#ifdef CONFIG_COMPAT
+
+static inline int is_compat_task(void)
+{
+ return test_thread_flag(TIF_31BIT);
+}
+
+static inline void __user *arch_compat_alloc_user_space(long len)
+{
+ unsigned long stack;
+
+ stack = KSTK_ESP(current);
+ if (is_compat_task())
+ stack &= 0x7fffffffUL;
+ return (void __user *) (stack - len);
+}
+
+#endif
+
+struct compat_ipc64_perm {
+ compat_key_t key;
+ __compat_uid32_t uid;
+ __compat_gid32_t gid;
+ __compat_uid32_t cuid;
+ __compat_gid32_t cgid;
+ compat_mode_t mode;
+ unsigned short __pad1;
+ unsigned short seq;
+ unsigned short __pad2;
+ unsigned int __unused1;
+ unsigned int __unused2;
+};
+
+struct compat_semid64_ds {
+ struct compat_ipc64_perm sem_perm;
+ compat_ulong_t sem_otime;
+ compat_ulong_t sem_otime_high;
+ compat_ulong_t sem_ctime;
+ compat_ulong_t sem_ctime_high;
+ compat_ulong_t sem_nsems;
+ compat_ulong_t __unused1;
+ compat_ulong_t __unused2;
+};
+
+struct compat_msqid64_ds {
+ struct compat_ipc64_perm msg_perm;
+ compat_ulong_t msg_stime;
+ compat_ulong_t msg_stime_high;
+ compat_ulong_t msg_rtime;
+ compat_ulong_t msg_rtime_high;
+ compat_ulong_t msg_ctime;
+ compat_ulong_t msg_ctime_high;
+ compat_ulong_t msg_cbytes;
+ compat_ulong_t msg_qnum;
+ compat_ulong_t msg_qbytes;
+ compat_pid_t msg_lspid;
+ compat_pid_t msg_lrpid;
+ compat_ulong_t __unused1;
+ compat_ulong_t __unused2;
+};
+
+struct compat_shmid64_ds {
+ struct compat_ipc64_perm shm_perm;
+ compat_size_t shm_segsz;
+ compat_ulong_t shm_atime;
+ compat_ulong_t shm_atime_high;
+ compat_ulong_t shm_dtime;
+ compat_ulong_t shm_dtime_high;
+ compat_ulong_t shm_ctime;
+ compat_ulong_t shm_ctime_high;
+ compat_pid_t shm_cpid;
+ compat_pid_t shm_lpid;
+ compat_ulong_t shm_nattch;
+ compat_ulong_t __unused1;
+ compat_ulong_t __unused2;
+};
+#endif /* _ASM_S390X_COMPAT_H */