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authorMax Filippov <jcmvbkbc@gmail.com>2012-10-25 11:10:51 +0400
committerChris Zankel <chris@zankel.net>2012-10-25 15:00:36 -0700
commitf0a1bf0859ffa059f9009d6a17e8d46241fb2161 (patch)
tree9ac202198fd961e3bc7b54bcc9e5501b17bb74ac
parent3306a72669a2af23b324540b08e68e82ac5b7dab (diff)
downloadop-kernel-dev-f0a1bf0859ffa059f9009d6a17e8d46241fb2161.zip
op-kernel-dev-f0a1bf0859ffa059f9009d6a17e8d46241fb2161.tar.gz
xtensa: switch to generic kernel_execve()
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Chris Zankel <chris@zankel.net>
-rw-r--r--arch/xtensa/Kconfig1
-rw-r--r--arch/xtensa/kernel/entry.S18
2 files changed, 2 insertions, 17 deletions
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 9525b70..0d1f36a 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 d4ec138..90bfc1d 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)
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