[PATCH v3 3/3] arm64: Allow 48-bits VA space without ARM_SMMU

Catalin Marinas catalin.marinas at arm.com
Fri Oct 10 08:10:53 PDT 2014


On Fri, Oct 10, 2014 at 11:14:30AM +0100, Christoffer Dall wrote:
> Now when KVM has been reworked to support 48-bits host VA space, we can
> allow systems to be configured with this option.  However, the ARM SMMU
> driver also needs to be tweaked for 48-bit support so only allow the
> config option to be set when not including support for theSMMU.
> 
> Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>
> ---
>  arch/arm64/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index fd4e81a..a76c6c3b 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -200,7 +200,7 @@ config ARM64_VA_BITS_42
>  
>  config ARM64_VA_BITS_48
>  	bool "48-bit"
> -	depends on BROKEN
> +	depends on !ARM_SMMU
>  
>  endchoice

I think we should rather merge this separately via the arm64 tree once
we test 48-bit VA some more (and as you noticed, there is a bug
already).

-- 
Catalin



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