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Subject: Re: [RFC PATCH 13/18] ARM: LPAE: ensure dma_addr_t is the same
 size as phys_addr_t
From: Catalin Marinas <catalin.marinas@arm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
        linux-arm-kernel@lists.infradead.org,
        Will Deacon <Will.Deacon@arm.com>, linux-kernel@vger.kernel.org
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Organization: ARM Limited
Date: Mon, 25 Oct 2010 12:32:09 +0100
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On Mon, 2010-10-25 at 12:08 +0100, Arnd Bergmann wrote:
> On Monday 25 October 2010, Catalin Marinas wrote:
> > From: Will Deacon <will.deacon@arm.com>
> >
> > Now that phys_addr_t can be 64-bit on ARM, we must ensure that dma_addr_t
> > is sufficiently large to hold physical addresses.
> >
> > This patch uses the types.h implementation in asm-generic to define the
> > dma_addr_t type as the same width as phys_addr_t.
> >
> > Signed-off-by: Will Deacon <will.deacon@arm.com>
> > Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
> 
> This patch will become obsolete once the "unify dma_addr_t typedef"
> series from Fujita Tomonori is upstream, you will instead have to set
> CONFIG_ARCH_DMA_ADDR_T_64BIT.

Yes, I know this and it's on my list to fix once I update the patches to
2.6.37-rc1.

Thanks,

Catalin