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: Mon, 14 Nov 2005 15:43:22 +1100 [thread overview]
Message-ID: <17272.5610.562107.359574@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <1131883101.27347.233.camel@baythorne.infradead.org>
David Woodhouse writes:
> But I think other things you mention are OK -- we'd still call
> do_signal() from *sigsuspend() just as we do at the moment, with the
> same loop. It's just that do_signal() would notice that the nvgprs
> aren't saved, and would set the TIF_SAVENVPGRS_TO_SIG_FRAME bit. ..
Ah ok, I see now, that sounds all right.
> (Actually in the case of swapcontext() we don't know that the nvgprs
> should be saved in a signal frame at the top of the userspace stack; the
> context will be elsewhere. We probably do need to store a pointer in the
> thread_info, but that's OK too)
True.
Paul.
next prev parent reply other threads:[~2005-11-14 4:43 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
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 [this message]
2005-11-14 20:05 ` David Woodhouse
2005-11-15 0:19 ` David Woodhouse
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