When LPAE is activated on Armada XP, all registers and IOs are still 32bit, the 40bit extension is on the CPU to DRAM path (windows) only. That means that all the DMA transfer are restricted to the low 32 bits address space. This is limitation is achieved by selecting ZONE_DMA.
Signed-off-by: Gregory CLEMENT <gregory.clem...@free-electrons.com> --- arch/arm/mach-mvebu/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index 440b13e..db1bbc8 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -13,6 +13,7 @@ config ARCH_MVEBU select MVEBU_CLK_CORE select MVEBU_CLK_CPU select MVEBU_CLK_GATING + select ZONE_DMA if ARM_LPAE if ARCH_MVEBU -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/