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authorAl Viro <viro@zeniv.linux.org.uk>2012-10-11 17:22:16 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-21 22:38:16 -0400
commit363806ddd232b67fdb2bd7ec8c98527e481c25c4 (patch)
tree072ba502e997deca3a31834a21143d11956c616b /arch/parisc
parentff0ab8af9c3f36e7b6f716c3b9e8811a4202eec6 (diff)
downloadvexpress-lsk-363806ddd232b67fdb2bd7ec8c98527e481c25c4.tar.gz
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>
Diffstat (limited to 'arch/parisc')
-rw-r--r--arch/parisc/Kconfig1
-rw-r--r--arch/parisc/include/asm/unistd.h1
-rw-r--r--arch/parisc/kernel/entry.S22
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 */