Re: [BUG] SLOB breaks Crypto

From: FUJITA Tomonori
Date: Wed May 19 2010 - 08:07:52 EST


On Wed, 19 May 2010 12:40:36 +0100
David Woodhouse <dwmw2@xxxxxxxxxxxxx> wrote:

> On Wed, 2010-05-19 at 13:32 +0200, Geert Uytterhoeven wrote:
> > Instead of having (different) defaults in sl[aou]b, perhaps we should
> > just remove the defaults completely, to ensure all architectures set
> > ARCH_SLAB_MINALIGN to the correct value?
>
> What is 'correct'? The architecture sets it to the minimum value that it
> can cope with, according to its own alignment constraints (and DMA/cache
> constraints, in the case of ARCH_KMALLOC_MINALIGN).

IIRC, not all the architectures do that; ARCH_KMALLOC_MINALIGN doesn't
mean "DMA-safe" alignment currently.
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