alpha: switch to saner kernel_execve() semantics

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 2 insertions, 17 deletions

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7da91246e279..7a08cfb80ee8 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -21,6 +21,7 @@ config ALPHA
         select GENERIC_STRNCPY_FROM_USER
         select GENERIC_STRNLEN_USER
         select GENERIC_KERNEL_THREAD
+        select GENERIC_KERNEL_EXECVE
         help
           The Alpha is a 64-bit general-purpose processor designed and
           marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 3cb6c1188984..7826e227e4d0 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -482,7 +482,6 @@
 #define __ARCH_WANT_SYS_SIGPENDING
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
 #define __ARCH_WANT_SYS_EXECVE
-#define __ARCH_WANT_KERNEL_EXECVE
 
 /* "Conditional" syscalls.  What we want is
 
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index 16e074f9e581..a7607832dd4f 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -603,24 +603,9 @@ ret_from_kernel_thread:
         mov     $9, $27
         mov     $10, $16
         jsr     $26, ($9)
-        ldgp    $gp, 0($26)
-        mov     $0, $16
-        mov     $31, $26
-        jmp     $31, sys_exit
-.end ret_from_kernel_thread
-
-        .globl  ret_from_kernel_execve
-        .align  4
-        .ent    ret_from_kernel_execve
-ret_from_kernel_execve:
-        mov     $16, $sp
-        /* Avoid the HAE being gratuitously wrong, to avoid restoring it.  */
-        ldq     $2, alpha_mv+HAE_CACHE
-        stq     $2, 152($sp)            /* HAE */
         mov     $31, $19                /* to disable syscall restarts */
         br      $31, ret_to_user
-
-.end    ret_from_kernel_execve
+.end ret_from_kernel_thread
 
 
 /*