8 files changed, 8 insertions, 54 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index a6f14f622d13..684eb5af439d 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -213,4 +213,7 @@ config HAVE_CMPXCHG_LOCAL
 config HAVE_CMPXCHG_DOUBLE
         bool
 
+config ARCH_WANT_OLD_COMPAT_IPC
+        bool
+
 source "kernel/gcov/Kconfig"
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index edbbae17e820..ce30e2f91d77 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2457,6 +2457,7 @@ config MIPS32_COMPAT
 config COMPAT
         bool
         depends on MIPS32_COMPAT
+        select ARCH_WANT_OLD_COMPAT_IPC
         default y
 
 config SYSVIPC_COMPAT
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d219ebecabf0..eeaa5328b862 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -154,6 +154,7 @@ config COMPAT
         bool
         default y if PPC64
         select COMPAT_BINFMT_ELF
+        select ARCH_WANT_OLD_COMPAT_IPC
 
 config SYSVIPC_COMPAT
         bool
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 465d5be1f0f4..2b7c0fbe578e 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -219,6 +219,7 @@ config COMPAT
         prompt "Kernel support for 31 bit emulation"
         depends on 64BIT
         select COMPAT_BINFMT_ELF
+        select ARCH_WANT_OLD_COMPAT_IPC
         help
           Select this option if you want to enable your system kernel to
           handle system-calls from ELF binaries for 31 bit ESA.  This option
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 1666de84d477..6c0683d3fcba 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -577,6 +577,7 @@ config COMPAT
         depends on SPARC64
         default y
         select COMPAT_BINFMT_ELF
+        select ARCH_WANT_OLD_COMPAT_IPC
 
 config SYSVIPC_COMPAT
         bool
diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h
index bf95f55b82b0..4b4b28969a65 100644
--- a/arch/tile/include/asm/compat.h
+++ b/arch/tile/include/asm/compat.h
@@ -242,17 +242,6 @@ long compat_sys_fallocate(int fd, int mode,
 long compat_sys_sched_rr_get_interval(compat_pid_t pid,
                                       struct compat_timespec __user *interval);
 
-/* Versions of compat functions that differ from generic Linux. */
-struct compat_msgbuf;
-long tile_compat_sys_msgsnd(int msqid,
-                            struct compat_msgbuf __user *msgp,
-                            size_t msgsz, int msgflg);
-long tile_compat_sys_msgrcv(int msqid,
-                            struct compat_msgbuf __user *msgp,
-                            size_t msgsz, long msgtyp, int msgflg);
-long tile_compat_sys_ptrace(compat_long_t request, compat_long_t pid,
-                            compat_long_t addr, compat_long_t data);
-
 /* Tilera Linux syscalls that don't have "compat" versions. */
 #define compat_sys_flush_cache sys_flush_cache
 
diff --git a/arch/tile/kernel/compat.c b/arch/tile/kernel/compat.c
index bf5e9d70266c..d67459b9ac2a 100644
--- a/arch/tile/kernel/compat.c
+++ b/arch/tile/kernel/compat.c
@@ -16,7 +16,6 @@
 #define __SYSCALL_COMPAT
 
 #include <linux/compat.h>
-#include <linux/msg.h>
 #include <linux/syscalls.h>
 #include <linux/kdev_t.h>
 #include <linux/fs.h>
@@ -95,52 +94,10 @@ long compat_sys_sched_rr_get_interval(compat_pid_t pid,
         return ret;
 }
 
-/*
- * The usual compat_sys_msgsnd() and _msgrcv() seem to be assuming
- * some different calling convention than our normal 32-bit tile code.
- */
-
-/* Already defined in ipc/compat.c, but we need it here. */
-struct compat_msgbuf {
-        compat_long_t mtype;
-        char mtext[1];
-};
-
-long tile_compat_sys_msgsnd(int msqid,
-                            struct compat_msgbuf __user *msgp,
-                            size_t msgsz, int msgflg)
-{
-        compat_long_t mtype;
-
-        if (get_user(mtype, &msgp->mtype))
-                return -EFAULT;
-        return do_msgsnd(msqid, mtype, msgp->mtext, msgsz, msgflg);
-}
-
-long tile_compat_sys_msgrcv(int msqid,
-                            struct compat_msgbuf __user *msgp,
-                            size_t msgsz, long msgtyp, int msgflg)
-{
-        long err, mtype;
-
-        err =  do_msgrcv(msqid, &mtype, msgp->mtext, msgsz, msgtyp, msgflg);
-        if (err < 0)
-                goto out;
-
-        if (put_user(mtype, &msgp->mtype))
-                err = -EFAULT;
- out:
-        return err;
-}
-
 /* Provide the compat syscall number to call mapping. */
 #undef __SYSCALL
 #define __SYSCALL(nr, call) [nr] = (call),
 
-/* The generic versions of these don't work for Tile. */
-#define compat_sys_msgrcv tile_compat_sys_msgrcv
-#define compat_sys_msgsnd tile_compat_sys_msgsnd
-
 /* See comments in sys.c */
 #define compat_sys_fadvise64_64 sys32_fadvise64_64
 #define compat_sys_readahead sys32_readahead
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 3ad653de7100..e3974694078b 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2177,6 +2177,7 @@ config IA32_AOUT
 config COMPAT
         def_bool y
         depends on IA32_EMULATION
+        select ARCH_WANT_OLD_COMPAT_IPC
 
 config COMPAT_FOR_U64_ALIGNMENT
         def_bool COMPAT