112 files changed, 2785 insertions, 787 deletions

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index a4968845e67f..1652a9800ebe 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -2157,10 +2157,6 @@ config DMI
 
 endmenu # "Boot options"
 
-config SYSVIPC_COMPAT
-	def_bool y
-	depends on COMPAT && SYSVIPC
-
 menu "Power management options"
 
 source "kernel/power/Kconfig"
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index eaa6ca062d89..9f362274a4f7 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -8,6 +8,15 @@
 #define compat_mode_t compat_mode_t
 typedef u16		compat_mode_t;
 
+#define __compat_uid_t	__compat_uid_t
+typedef u16		__compat_uid_t;
+typedef u16		__compat_gid_t;
+
+#define compat_ipc_pid_t compat_ipc_pid_t
+typedef u16		compat_ipc_pid_t;
+
+#define compat_statfs	compat_statfs
+
 #include <asm-generic/compat.h>
 
 #ifdef CONFIG_COMPAT
@@ -19,21 +28,15 @@ typedef u16		compat_mode_t;
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
 
-#define COMPAT_USER_HZ		100
 #ifdef __AARCH64EB__
 #define COMPAT_UTS_MACHINE	"armv8b\0\0"
 #else
 #define COMPAT_UTS_MACHINE	"armv8l\0\0"
 #endif
 
-typedef u16		__compat_uid_t;
-typedef u16		__compat_gid_t;
 typedef u16		__compat_uid16_t;
 typedef u16		__compat_gid16_t;
-typedef u32		compat_dev_t;
 typedef s32		compat_nlink_t;
-typedef u16		compat_ipc_pid_t;
-typedef __kernel_fsid_t	compat_fsid_t;
 
 struct compat_stat {
 #ifdef __AARCH64EB__
@@ -65,26 +68,6 @@ struct compat_stat {
 	compat_ulong_t	__unused4[2];
 };
 
-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	/*  using 'struct flock64' */
-#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 {
 	int		f_type;
 	int		f_bsize;
@@ -107,64 +90,6 @@ struct compat_statfs {
 #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current)))
 #define COMPAT_MINSIGSTKSZ	2048
 
-struct compat_ipc64_perm {
-	compat_key_t key;
-	__compat_uid32_t uid;
-	__compat_gid32_t gid;
-	__compat_uid32_t cuid;
-	__compat_gid32_t cgid;
-	unsigned short mode;
-	unsigned short __pad1;
-	unsigned short seq;
-	unsigned short __pad2;
-	compat_ulong_t unused1;
-	compat_ulong_t 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 __unused3;
-	compat_ulong_t __unused4;
-};
-
-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 __unused4;
-	compat_ulong_t __unused5;
-};
-
-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 __unused4;
-	compat_ulong_t __unused5;
-};
-
 static inline int is_compat_task(void)
 {
 	return test_thread_flag(TIF_32BIT);
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index 4e65da3445c7..037feba03a51 100644
--- a/arch/arm64/include/asm/unistd.h
+++ b/arch/arm64/include/asm/unistd.h
@@ -3,6 +3,7 @@
  * Copyright (C) 2012 ARM Ltd.
  */
 #ifdef CONFIG_COMPAT
+#define __ARCH_WANT_COMPAT_STAT
 #define __ARCH_WANT_COMPAT_STAT64
 #define __ARCH_WANT_SYS_GETHOSTNAME
 #define __ARCH_WANT_SYS_PAUSE
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 6e92ca97e479..db09d45d59ec 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -3198,16 +3198,12 @@ config MIPS32_COMPAT
 config COMPAT
 	bool
 
-config SYSVIPC_COMPAT
-	bool
-
 config MIPS32_O32
 	bool "Kernel support for o32 binaries"
 	depends on 64BIT
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT
 	select MIPS32_COMPAT
-	select SYSVIPC_COMPAT if SYSVIPC
 	help
 	  Select this option if you want to run o32 binaries.  These are pure
 	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
@@ -3221,7 +3217,6 @@ config MIPS32_N32
 	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
 	select COMPAT
 	select MIPS32_COMPAT
-	select SYSVIPC_COMPAT if SYSVIPC
 	help
 	  Select this option if you want to run n32 binaries.  These are
 	  64-bit binaries using 32-bit quantities for addressing and certain
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
index bbb3bc5a42fd..ec01dc000a41 100644
--- a/arch/mips/include/asm/compat.h
+++ b/arch/mips/include/asm/compat.h
@@ -9,28 +9,28 @@
 #include <asm/page.h>
 #include <asm/ptrace.h>
 
+#define __compat_uid_t	__compat_uid_t
 typedef s32		__compat_uid_t;
 typedef s32		__compat_gid_t;
+
 typedef __compat_uid_t	__compat_uid32_t;
 typedef __compat_gid_t	__compat_gid32_t;
 #define __compat_uid32_t __compat_uid32_t
-#define __compat_gid32_t __compat_gid32_t
+
+#define compat_statfs		compat_statfs
+#define compat_ipc64_perm	compat_ipc64_perm
 
 #define _COMPAT_NSIG		128		/* Don't ask !$@#% ...	*/
 #define _COMPAT_NSIG_BPW	32
 typedef u32		compat_sigset_word;
 
+#define COMPAT_RLIM_INFINITY	0x7fffffffUL
+
 #include <asm-generic/compat.h>
 
-#define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"mips\0\0\0"
 
-typedef u32		compat_dev_t;
 typedef u32		compat_nlink_t;
-typedef s32		compat_ipc_pid_t;
-typedef struct {
-	s32	val[2];
-} compat_fsid_t;
 
 struct compat_stat {
 	compat_dev_t	st_dev;
@@ -55,27 +55,8 @@ struct compat_stat {
 	s32		st_pad4[14];
 };
 
-struct compat_flock {
-	short		l_type;
-	short		l_whence;
-	compat_off_t	l_start;
-	compat_off_t	l_len;
-	s32		l_sysid;
-	compat_pid_t	l_pid;
-	s32		pad[4];
-};
-
-#define F_GETLK64	33
-#define F_SETLK64	34
-#define F_SETLKW64	35
-
-struct compat_flock64 {
-	short		l_type;
-	short		l_whence;
-	compat_loff_t	l_start;
-	compat_loff_t	l_len;
-	compat_pid_t	l_pid;
-};
+#define __ARCH_COMPAT_FLOCK_EXTRA_SYSID		s32 l_sysid;
+#define __ARCH_COMPAT_FLOCK_PAD			s32 pad[4];
 
 struct compat_statfs {
 	int		f_type;
@@ -92,10 +73,6 @@ struct compat_statfs {