From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Tue, 10 Apr 2012 07:00:48 +0200
Subject: [U-Boot] [PATCH] FAT: Properly align buffers to allow cache
	operations
In-Reply-To: <201204100036.07124.vapier@gentoo.org>
References: <1333953903-26335-1-git-send-email-marex@denx.de>
	<201204100036.07124.vapier@gentoo.org>
Message-ID: <201204100700.48644.marex@denx.de>
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To: u-boot@lists.denx.de

Dear Mike Frysinger,

> On Monday 09 April 2012 02:45:03 Marek Vasut wrote:
> > @@ -765,9 +767,6 @@
> > 
> > -__attribute__ ((__aligned__ (__alignof__ (dir_entry))))
> > -__u8 do_fat_read_block[MAX_CLUSTSIZE];
> > -
> > 
> > @@ -788,6 +787,7 @@ do_fat_read (const char *filename, void *buffer,
> > 
> >  	int rootdir_size = 0;
> >  	int j;
> > 
> > +	uint8_t do_fat_read_block[MAX_CLUSTSIZE] __attribute__((aligned(32)));
> 
> what's going on here exactly ?  the old code had the advantage of being in
> the bss and the linker taking care of the alignment.  this new code has an
> incorrectly hard-coded "32", and puts a 64KiB array onto the *stack*.

This will be probably fixed in Eric's patch

Best regards,
Marek Vasut