linux-kernel - Re: [RFC PATCH 13/18] ARM: LPAE: ensure dma_addr_t is the same size as phys_addr

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Date:	Mon, 25 Oct 2010 13:08:23 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Catalin Marinas <catalin.marinas@....com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Will Deacon <will.deacon@....com>, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 13/18] ARM: LPAE: ensure dma_addr_t is the same size as phys_addr_t

On Monday 25 October 2010, Catalin Marinas wrote:
> From: Will Deacon <will.deacon@....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@....com>
> Signed-off-by: Catalin Marinas <catalin.marinas@....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.

	Arnd

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