From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Steve Munroe <sjmunroe@us.ibm.com>
Cc: Ulrich Weigand <Ulrich.Weigand@de.ibm.com>,
linuxppc-dev list <linuxppc-dev@ozlabs.org>,
Paul Mackerras <paulus@samba.org>,
Anton Blanchard <anton@samba.org>
Subject: Re: Saving to 32 bits of GPRs in signal context
Date: Wed, 30 May 2007 07:37:41 +1000 [thread overview]
Message-ID: <1180474661.19517.197.camel@localhost.localdomain> (raw)
In-Reply-To: <OF23D1348F.B2E0AE28-ON862572EA.004C17B2-862572EA.004CF843@us.ibm.com>
On Tue, 2007-05-29 at 09:00 -0500, Steve Munroe wrote:
>
> >
> Yes exactly why make an incompatible ABI change to the powerp32 ABI,
> when you can just use the existing 64-bit ABI.
Why do you keep saying we are making an incompatible ABI change while we
are not ?
> Especially as you can only run what is proposed on 64-bit hardware!
Because people want to do it ... I suspect this has a lot to do with not
having 64 bits pointers or providing specific optimisations in low level
routines within overall 32 bits apps but I don't know the details.
> We don't need another ABI change to powerpc32 (still recovering from
> the
> -msecure-plt ABI change) and WE DONT NEED a 3rd ABI.
>
> ABI changes ripple everywhere (not just GCC/GLIBC) including all
> debuggers
> and performance tools. Believe me you really don't want this.
BUT WE ARE NOT CHANGING THE BLOODY ABI IN ANY INCOMPATIBLE WAY SHAPE OR
FORM AND THERE IS NO NEED TO CHANGE GLIBC ! Have I been clear enough ?
If not, I'll let Uli explain why again for the 4th time at least.
Ben.
next prev parent reply other threads:[~2007-05-29 21:37 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-29 7:24 Saving to 32 bits of GPRs in signal context Benjamin Herrenschmidt
2007-05-29 7:52 ` Dan Malek
2007-05-29 8:05 ` Benjamin Herrenschmidt
2007-05-29 9:26 ` Gabriel Paubert
2007-05-29 9:44 ` Benjamin Herrenschmidt
2007-05-29 13:12 ` Segher Boessenkool
2007-05-29 14:00 ` Steve Munroe
2007-05-29 14:08 ` Ulrich Weigand
2007-05-29 14:17 ` Kumar Gala
2007-05-29 14:38 ` Segher Boessenkool
2007-05-29 19:04 ` Becky Bruce
2007-05-30 10:04 ` Christoph Hellwig
2007-05-30 12:13 ` Kumar Gala
2007-05-30 12:30 ` Segher Boessenkool
2007-05-29 14:31 ` Segher Boessenkool
2007-05-29 14:51 ` Steve Munroe
2007-05-29 21:44 ` Benjamin Herrenschmidt
2007-05-29 23:16 ` Steve Munroe
2007-05-29 23:19 ` Benjamin Herrenschmidt
2007-05-30 7:34 ` Hiroyuki Machida
2007-05-30 11:40 ` Segher Boessenkool
2007-05-30 11:48 ` Benjamin Herrenschmidt
2007-05-30 3:37 ` Paul Mackerras
2007-05-30 5:32 ` Kumar Gala
2007-05-30 11:44 ` Benjamin Herrenschmidt
2007-05-30 12:15 ` Kumar Gala
2007-05-30 12:48 ` Hiroyuki Machida
2007-05-30 12:58 ` Benjamin Herrenschmidt
2007-05-30 18:09 ` Steve Munroe
2007-05-30 21:02 ` Gabriel Paubert
2007-05-30 21:41 ` Steve Munroe
2007-05-30 12:01 ` Segher Boessenkool
2007-05-30 11:59 ` Segher Boessenkool
2007-05-30 12:01 ` Benjamin Herrenschmidt
2007-05-30 12:07 ` Segher Boessenkool
2007-05-30 12:09 ` Benjamin Herrenschmidt
2007-05-30 12:36 ` Segher Boessenkool
2007-05-29 14:28 ` Segher Boessenkool
2007-05-29 21:37 ` Benjamin Herrenschmidt [this message]
2007-05-29 21:38 ` Benjamin Herrenschmidt
2007-05-29 13:04 ` Segher Boessenkool
2007-05-29 14:28 ` Arnd Bergmann
2007-05-29 14:43 ` Segher Boessenkool
2007-05-29 15:54 ` Geert Uytterhoeven
2007-05-29 18:48 ` Arnd Bergmann
2007-05-29 21:27 ` Benjamin Herrenschmidt
2007-05-29 21:45 ` Felix Domke
2007-05-30 11:23 ` Benjamin Herrenschmidt
2007-05-30 11:52 ` Felix Domke
2007-05-30 13:14 ` Segher Boessenkool
2007-05-30 11:54 ` Segher Boessenkool
2007-05-30 12:07 ` Felix Domke
2007-05-31 5:39 ` Benjamin Herrenschmidt
2007-05-29 13:10 ` Kumar Gala
2007-05-29 21:32 ` Benjamin Herrenschmidt
2007-05-29 23:46 ` Olof Johansson
2007-05-30 0:43 ` Kumar Gala
2007-05-30 2:54 ` Steve Munroe
2007-05-30 5:31 ` Kumar Gala
2007-05-30 19:47 ` Steve Munroe
2007-05-30 20:52 ` Olof Johansson
2007-05-30 21:33 ` Steve Munroe
2007-05-29 13:53 ` Ulrich Weigand
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