From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Nicolas Pitre <nico@fluxnic.net>
Cc: "Will Deacon" <will.deacon@arm.com>,
"Måns Rullgård" <mans@mansr.com>,
"Catalin Marinas" <catalin.marinas@arm.com>,
lkml <linux-kernel@vger.kernel.org>,
ak@linux.intel.com, "Andrew Morton" <akpm@linux-foundation.org>,
sam@ravnborg.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] ARM: Do not allow unaligned accesses when CONFIG_ALIGNMENT_TRAP
Date: Thu, 26 May 2011 22:51:01 +0100 [thread overview]
Message-ID: <20110526215101.GL24876@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <alpine.LFD.2.00.1105261650330.3207@xanadu.home>
On Thu, May 26, 2011 at 05:03:39PM -0400, Nicolas Pitre wrote:
> It is possible that -fconserve-stack is still valuable on ARM given that
> it is also used with -mno-unaligned-access for other things than
> structure packing on the stack, and therefore its merits can be debated
> independently from the alignment issue at hand.
Catalin said in his mail "I haven't tried with -mno-unaligned-access, I
suspect the variables on the stack would be aligned.". So I don't think
we know enough to say whether -mno-unaligned-access avoids the stack
packing.
WARNING: multiple messages have this Message-ID (diff)
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: Do not allow unaligned accesses when CONFIG_ALIGNMENT_TRAP
Date: Thu, 26 May 2011 22:51:01 +0100 [thread overview]
Message-ID: <20110526215101.GL24876@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <alpine.LFD.2.00.1105261650330.3207@xanadu.home>
On Thu, May 26, 2011 at 05:03:39PM -0400, Nicolas Pitre wrote:
> It is possible that -fconserve-stack is still valuable on ARM given that
> it is also used with -mno-unaligned-access for other things than
> structure packing on the stack, and therefore its merits can be debated
> independently from the alignment issue at hand.
Catalin said in his mail "I haven't tried with -mno-unaligned-access, I
suspect the variables on the stack would be aligned.". So I don't think
we know enough to say whether -mno-unaligned-access avoids the stack
packing.
next prev parent reply other threads:[~2011-05-26 21:51 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-23 11:16 [PATCH] ARM: Do not allow unaligned accesses when CONFIG_ALIGNMENT_TRAP Catalin Marinas
2011-05-23 12:30 ` Måns Rullgård
2011-05-23 13:25 ` Russell King - ARM Linux
2011-05-23 13:21 ` Russell King - ARM Linux
2011-05-23 13:51 ` Catalin Marinas
2011-05-23 14:37 ` Måns Rullgård
2011-05-23 14:41 ` Catalin Marinas
2011-05-23 14:52 ` Russell King - ARM Linux
2011-05-24 9:39 ` Catalin Marinas
2011-05-24 14:17 ` Måns Rullgård
2011-05-24 15:26 ` Catalin Marinas
2011-05-24 16:23 ` Måns Rullgård
2011-05-24 17:26 ` Nicolas Pitre
2011-05-24 17:13 ` Dave Martin
2011-05-25 11:14 ` Catalin Marinas
2011-05-25 12:43 ` Dave Martin
2011-05-25 13:32 ` Måns Rullgård
2011-05-25 14:05 ` Dave Martin
2011-05-25 14:48 ` Måns Rullgård
2011-05-25 14:50 ` Catalin Marinas
2011-05-25 14:53 ` Måns Rullgård
2011-05-26 17:10 ` Will Deacon
2011-05-26 17:10 ` Will Deacon
2011-05-26 18:14 ` Måns Rullgård
2011-05-26 18:14 ` Måns Rullgård
2011-05-26 19:58 ` Andi Kleen
2011-05-26 19:58 ` Andi Kleen
2011-05-26 21:03 ` Nicolas Pitre
2011-05-26 21:03 ` Nicolas Pitre
2011-05-26 21:10 ` Andi Kleen
2011-05-26 21:10 ` Andi Kleen
2011-05-26 21:26 ` Måns Rullgård
2011-05-26 21:26 ` Måns Rullgård
2011-05-27 10:05 ` Will Deacon
2011-05-27 10:05 ` Will Deacon
2011-05-27 16:53 ` Andi Kleen
2011-05-27 16:53 ` Andi Kleen
2011-05-26 21:51 ` Russell King - ARM Linux [this message]
2011-05-26 21:51 ` Russell King - ARM Linux
2011-05-26 22:29 ` Andi Kleen
2011-05-26 22:29 ` Andi Kleen
2011-05-27 8:38 ` Catalin Marinas
2011-05-27 8:38 ` Catalin Marinas
2011-05-27 8:54 ` Russell King - ARM Linux
2011-05-27 8:54 ` Russell King - ARM Linux
2011-05-27 9:51 ` Catalin Marinas
2011-05-27 9:51 ` Catalin Marinas
2011-05-27 9:56 ` Catalin Marinas
2011-05-27 9:56 ` Catalin Marinas
2011-05-27 12:46 ` Måns Rullgård
2011-05-27 12:46 ` Måns Rullgård
2011-05-28 15:34 ` [PATCH] Disable -fconserve-stack on ARM Andi Kleen
2011-05-28 15:34 ` Andi Kleen
2011-05-31 16:30 ` Catalin Marinas
2011-05-31 16:30 ` Catalin Marinas
2011-05-31 18:01 ` Andi Kleen
2011-05-31 18:01 ` Andi Kleen
2011-06-02 13:08 ` Catalin Marinas
2011-06-02 13:08 ` Catalin Marinas
[not found] <mailman.254.1306496353.1533.linux-arm-kernel@lists.infradead.org>
2011-05-27 12:14 ` [PATCH] ARM: Do not allow unaligned accesses when CONFIG_ALIGNMENT_TRAP Frank Hofmann
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