From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Wed, 20 Oct 2010 22:55:35 +0000 (-0700)
Subject: x86, mm: Enable ARCH_DMA_ADDR_T_64BIT with X86_64 || HIGHMEM64G
X-Git-Tag: upstream/snapshot3+hdmi~12745^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=66f2b061546974b96b7b238a92ce89a87ecf0754;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

x86, mm: Enable ARCH_DMA_ADDR_T_64BIT with X86_64 || HIGHMEM64G

Set CONFIG_ARCH_DMA_ADDR_T_64BIT when we set dma_addr_t to 64 bits in
<asm/types.h>; this allows Kconfig decisions based on this property.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
LKML-Reference: <201010202255.o9KMtZXu009370@imap1.linux-foundation.org>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
---

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index cea0cd9..2924f4e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1148,6 +1148,9 @@ config X86_PAE
 config ARCH_PHYS_ADDR_T_64BIT
 	def_bool X86_64 || X86_PAE
 
+config ARCH_DMA_ADDR_T_64BIT
+	def_bool X86_64 || HIGHMEM64G
+
 config DIRECT_GBPAGES
 	bool "Enable 1GB pages for kernel pagetables" if EMBEDDED
 	default y