From: Paul Mackerras <paulus@samba.org>
To: David Woodhouse <dwmw2@infradead.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [RFC] Attempt to clean up sigsuspend et al
Date: Sat, 12 Nov 2005 11:28:31 +1100 [thread overview]
Message-ID: <17269.14127.936147.778781@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <1131745047.21212.194.camel@hades.cambridge.redhat.com>
David Woodhouse writes:
> This is an attempt to get rid of it all, motivated mostly because I want
> to add two _new_ functions which would need such treatment (pselect,
> ppoll).
>
> We define a new thread flag TIF_RESTOREALL which is set by the syscall
> which needs this treatment, and make the syscall return path honour it.
> This seems to work as far as I've tested it (i.e. the system boots) for
> ppc64, but I haven't even attempted to compile the 32-bit version yet.
Ummm, I don't see where you save the non-volatile GPRs to the
exception frame _before_ do_signal (called from within *_sigsuspend)
copies them to the user stack...
Paul.
next prev parent reply other threads:[~2005-11-12 0:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-11 21:37 [RFC] Attempt to clean up sigsuspend et al David Woodhouse
2005-11-12 0:28 ` Paul Mackerras [this message]
2005-11-12 0:48 ` David Woodhouse
2005-11-13 6:58 ` Paul Mackerras
2005-11-13 9:41 ` David Woodhouse
2005-11-13 10:09 ` Paul Mackerras
2005-11-13 11:58 ` David Woodhouse
2005-11-14 4:43 ` Paul Mackerras
2005-11-14 20:05 ` David Woodhouse
2005-11-15 0:19 ` David Woodhouse
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