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Re: Struct sigaction cleanup

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: Struct sigaction cleanup
From: "Jon Burgess" <Jon_Burgess@eur.3com.com>
Date: Mon, 10 Mar 2003 10:22:56 +0000
Cc: linux-mips@linux-mips.org
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org

Ralf Wrote:
> Further no known libc implementation making use of sa_restorer.

I don't know if this is relevant, but Linus recently tried
changing the sa_restorer behaviour in the linux-2.5 kernel and
later had to back out the change. The following lines are from
recent changelogs:

http://www.uwsg.iu.edu/hypermail/linux/kernel/0301.1/0344.html
Linux-2.5.55:
Move x86 signal handler return stub to the vsyscall page, and stop
    honoring the SA_RESTORER information.

http://www.uwsg.iu.edu/hypermail/linux/kernel/0301.1/1884.html
Linux-2.5.57:
Re-instate the SA_RESTORER functionality, since it seems that some
    programs still depend on it and in fact do install a different
    signal restorer than the standard kernel version.


     Jon



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