Re: [Xen-devel] [PATCH v3 07/10] arm: make it possible to disable the SMMU driver

[Julien Grall <julien.grall@xxxxxxx>]

Hi Stefano,

On 23/05/18 01:25, Stefano Stabellini wrote:
> Introduce a Kconfig option for the ARM SMMUv1 and SMMUv2 driver.
>
> Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Acked-by: Julien Grall <julien.grall@xxxxxxx>

Cheers,

> CC: jbeulich@xxxxxxxx
>
> ---
> Changes in v3:
> - rename SMMUv2 to ARM_SMMU
> - improve help message
> - use if ARM
>
> Changes in v2:
> - rename HAS_SMMUv2 to SMMUv2
> - move SMMUv2 to xen/drivers/passthrough/Kconfig
> ---
>   xen/drivers/passthrough/Kconfig      | 12 ++++++++++++
>   xen/drivers/passthrough/arm/Makefile |  2 +-
>   2 files changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/xen/drivers/passthrough/Kconfig b/xen/drivers/passthrough/Kconfig
> index 8d90b67..a3c0649 100644
> --- a/xen/drivers/passthrough/Kconfig
> +++ b/xen/drivers/passthrough/Kconfig
> @@ -1,3 +1,15 @@
>   
>   config HAS_PASSTHROUGH
>         bool
> +
> +if ARM
> +config ARM_SMMU
> +       bool "ARM SMMUv1 and v2 driver"
> +       default y
> +       ---help---
> +         Support for implementations of the ARM System MMU architecture
> +         versions 1 and 2.
> +
> +         Say Y here if your SoC includes an IOMMU device implementing the
> +         ARM SMMU architecture.
> +endif
> diff --git a/xen/drivers/passthrough/arm/Makefile 
> b/xen/drivers/passthrough/arm/Makefile
> index f4cd26e..0156431 100644
> --- a/xen/drivers/passthrough/arm/Makefile
> +++ b/xen/drivers/passthrough/arm/Makefile
> @@ -1,2 +1,2 @@
>   obj-y += iommu.o
> -obj-y += smmu.o
> +obj-$(ARM_SMMU) += smmu.o
--
Julien Grall

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