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From: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org, Nate Case <ncase@xes-inc.com>,
	ths@linutronix.de
Subject: Re: [PATCH] powerpc: enforce a non-spe kernel build even on broken compilers
Date: Wed, 15 Oct 2008 16:43:59 +0200	[thread overview]
Message-ID: <20081015144359.GA30649@Chamillionaire.breakpoint.cc> (raw)
In-Reply-To: <6115D7FB-7500-4F67-B02B-B64B92B33D1A@kernel.crashing.org>

* Kumar Gala | 2008-10-15 08:25:54 [-0500]:

>
> On Oct 15, 2008, at 3:59 AM, Sebastian Andrzej Siewior wrote:
>
>> * Sebastian Andrzej Siewior | 2008-10-15 00:49:46 [+0200]:
>>
>>>> is the -mabi=no-spe really needed?
>>> It seems to work the other way around (without -mabi=no-spe but with
>>> -mabi=no-spe) alteast I did not find anything in do_syslog() or while
>>> browsing through the dissasm. I do a boot check tomorrow.
>>
>> Okay. I recompiled with -mspe=no and was able to boot without trouble.
>> It didn't work with -mabi=no-spe.
>
> I'm confused.. what did you change from your patch?

This is the patch it right now:
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -103,6 +103,7 @@ KBUILD_CFLAGS += $(call cc-option,-mno-altivec)

 # No SPE instruction when building kernel
 KBUILD_CFLAGS += $(call cc-option,-mno-spe)
+KBUILD_CFLAGS += $(call cc-option,-mspe=no)

 # Enable unit-at-a-time mode when possible. It shrinks the
 # kernel considerably.
-- 

With this patch it compiles and boots fine.
The option -mabi=no-spe is not required.

> - k
Sebastian

  reply	other threads:[~2008-10-15 14:44 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-01 14:23 [PATCH] powerpc: enforce a non-spe kernel build even on broken compilers Sebastian Siewior
2008-10-14 19:25 ` Nate Case
2008-10-14 22:02   ` Nate Case
2008-10-14 21:23 ` Kumar Gala
2008-10-14 22:35   ` Nate Case
2008-10-14 22:49   ` Sebastian Andrzej Siewior
2008-10-15  8:59     ` Sebastian Andrzej Siewior
2008-10-15 13:25       ` Kumar Gala
2008-10-15 14:43         ` Sebastian Andrzej Siewior [this message]
2008-10-15 16:31           ` Kumar Gala
2008-10-17 14:02           ` Nate Case
2008-10-17 15:01             ` Sebastian Andrzej Siewior
2008-10-24 23:51             ` Nate Case
2008-10-24 23:55               ` Kumar Gala

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