parisc: switch to saner kernel_execve() semantics

ACKed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 4 insertions, 20 deletions

diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index c779da7cd96..0aec70c3561 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -23,6 +23,7 @@ config PARISC
         select HAVE_MOD_ARCH_SPECIFIC
         select MODULES_USE_ELF_RELA
         select GENERIC_KERNEL_THREAD
+        select GENERIC_KERNEL_EXECVE
 
         help
           The PA-RISC microprocessor is designed by Hewlett-Packard and used
diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h
index b9e39f33590..4dab76b70ec 100644
--- a/arch/parisc/include/asm/unistd.h
+++ b/arch/parisc/include/asm/unistd.h
@@ -995,7 +995,6 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 #define __ARCH_WANT_SYS_RT_SIGACTION
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
 #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
-#define __ARCH_WANT_KERNEL_EXECVE
 #define __ARCH_WANT_SYS_EXECVE
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S
index 47fb6ddcf12..c9a9abd4bc5 100644
--- a/arch/parisc/kernel/entry.S
+++ b/arch/parisc/kernel/entry.S
@@ -727,26 +727,10 @@ ENTRY(ret_from_kernel_thread)
         LDREG   TASK_PT_GR26(%r1), %r1
         ble     0(%sr7, %r1)
         copy    %r31, %r2
-
-#ifdef CONFIG_64BIT
-        ldo     -16(%r30),%r29          /* Reference param save area */
-        loadgp                          /* Thread could have been in a module */
-#endif
-#ifndef CONFIG_64BIT
-        b       sys_exit
-#else
-        load32  sys_exit, %r1
-        bv      %r0(%r1)
-#endif
-        ldi     0, %r26
+        b       finish_child_return
+        nop
 ENDPROC(ret_from_kernel_thread)
 
-ENTRY(ret_from_kernel_execve)
-        mfctl   %cr30, %r1
-        b       syscall_exit    /* forward */
-        ldo     THREAD_SZ_ALGN+FRAME_SIZE(%r1), %r30
-ENDPROC(ret_from_kernel_execve)
-
 
         /*
          * struct task_struct *_switch_to(struct task_struct *prev,
@@ -1721,7 +1705,7 @@ ENDPROC(sys_fork_wrapper)
 ENTRY(child_return)
         BL      schedule_tail, %r2
         nop
-
+finish_child_return:
         LDREG   TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30), %r1
         ldo     TASK_REGS(%r1),%r1       /* get pt regs */