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 <[email protected]> LKML-Reference: <[email protected]> Acked-by: "H. Peter Anvin" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]>
kyagi · Oct 20, 2010 · 66f2b06 · 66f2b06
1 parent 9329672
commit 66f2b06
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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