[Bug tapsets/13480] ARM missing syscall.sigaltstack

[dsmith at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13480

--- Comment #3 from David Smith <dsmith at redhat dot com> ---
The following kernel commit switched arm to using the generic sigaltstack:

====
commit ec93ac8663ad5fcccd44c3768b23c93b87610fc2
Author: Al Viro <viro@zeniv.linux.org.uk>
Date:   Sun Dec 23 01:52:54 2012 -0500

    arm: switch to generic sigaltstack

    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
====

Looks like this commit is present in 3.9. So, for 3.9+ kernels, this issue
should be fixed.

If we want to try to fix this for kernels <= 3.8, we could either:

1) Use 'do_sigaltstack' for syscall.sigaltstack, since sys_sigaltstack just
seems to be a wrapper for it anyway.

2) To just get things to compile, use 'never' for syscall.sigaltstack.

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