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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-27 14:13:33 (GMT)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-27 14:13:33 (GMT)
commite372dc6c62bf0246a07f3291a26c562cc8659fbd (patch)
treec7039c1d1005b80e427761ba768d7697ae4a0b72 /arch/alpha/kernel/process.c
parent5d4121c04b3577e37e389b3553d442f44bb346d7 (diff)
parentfea7a08acb13524b47711625eebea40a0ede69a0 (diff)
downloadlinux-fsl-qoriq-e372dc6c62bf0246a07f3291a26c562cc8659fbd.tar.xz
Merge 3.6-rc3 into tty-next
This picks up all of the different fixes in Linus's tree that we also need here. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/alpha/kernel/process.c')
-rw-r--r--arch/alpha/kernel/process.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index 153d3fc..d6fde98 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -455,3 +455,22 @@ get_wchan(struct task_struct *p)
}
return pc;
}
+
+int kernel_execve(const char *path, const char *const argv[], const char *const envp[])
+{
+ /* Avoid the HAE being gratuitously wrong, which would cause us
+ to do the whole turn off interrupts thing and restore it. */
+ struct pt_regs regs = {.hae = alpha_mv.hae_cache};
+ int err = do_execve(path, argv, envp, &regs);
+ if (!err) {
+ struct pt_regs *p = current_pt_regs();
+ /* copy regs to normal position and off to userland we go... */
+ *p = regs;
+ __asm__ __volatile__ (
+ "mov %0, $sp;"
+ "br $31, ret_from_sys_call"
+ : : "r"(p));
+ }
+ return err;
+}
+EXPORT_SYMBOL(kernel_execve);