linux-kernel - Re: Early crash

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Message-ID: <20110207192830.GA23476@dtor-ws.eng.vmware.com>
Date:	Mon, 7 Feb 2011 11:28:30 -0800
From:	Dmitry Torokhov <dtor@...are.com>
To:	David Miller <davem@...emloft.net>
Cc:	"schwab@...ux-m68k.org" <schwab@...ux-m68k.org>,
	"geert@...ux-m68k.org" <geert@...ux-m68k.org>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-m68k@...r.kernel.org" <linux-m68k@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>
Subject: Re: Early crash

On Mon, Feb 07, 2011 at 11:27:08AM -0800, David Miller wrote:
> From: Dmitry Torokhov <dtor@...are.com>
> Date: Mon, 7 Feb 2011 08:58:29 -0800
> 
> > But, theoretically speaking, nothing stops GCC to align pointers with
> > "gaps" as well? Let's say having everything (or some) aligned on
> > quadword boundary even though arch is 32 bit?
> 
> The alignment business only applies to aggregates (ie. structs and
> unions).
> 
> This has been confirmed via several weeks of expermentation with
> different GCC versions on different platforms as well.

I see. OK, then I'll prepare a patch to switch over to struct + pointer
scheme.


Thanks,

Dmitry

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