xtensa: switch to generic kernel_execve()

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>

2 files changed, 2 insertions, 17 deletions

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 9525b70a13a1..0d1f36a22c98 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -14,6 +14,7 @@ config XTENSA
         select MODULES_USE_ELF_RELA
         select GENERIC_PCI_IOMAP
         select GENERIC_KERNEL_THREAD
+        select GENERIC_KERNEL_EXECVE
         select ARCH_WANT_OPTIONAL_GPIOLIB
         help
           Xtensa processors are 32-bit RISC machines designed by Tensilica
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index d4ec1381aebc..90bfc1dbc13d 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -1833,22 +1833,6 @@ ENTRY(system_call)
 
 
 /*
- * Do a system call from kernel instead of calling sys_execve, so we end up
- * with proper pt_regs.
- *
- * int kernel_execve(const char *fname, char *const argv[], charg *const envp[])
- * a2                        a2               a3                  a4
- */
-
-ENTRY(kernel_execve)
-        entry   a1, 16
-        mov     a6, a2                  # arg0 is in a6
-        movi    a2, __NR_execve
-        syscall
-
-        retw
-
-/*
  * Task switch.
  *
  * struct task*  _switch_to (struct task* prev, struct task* next)
@@ -1940,6 +1924,6 @@ ENTRY(ret_from_kernel_thread)
         call4   schedule_tail
         mov     a6, a3
         callx4  a2
-        call4   do_exit
+        j       common_exception_return
 
 ENDPROC(ret_from_kernel_thread)