Re: [PATCH v2 01/10] iommu/vt-d: Introduce native SVM capable flag

[Auger Eric]

Hi Jacob,

On 11/18/19 8:42 PM, Jacob Pan wrote:
> Shared Virtual Memory(SVM) is based on a collective set of hardware
> features detected at runtime. There are requirements for matching CPU
> and IOMMU capabilities.
> 
> This patch introduces a flag which will be used to mark and test the
> capability of SVM.
> 
> Signed-off-by: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>
> Acked-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> ---
>  include/linux/intel-iommu.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
> index ed11ef594378..63118991824c 100644
> --- a/include/linux/intel-iommu.h
> +++ b/include/linux/intel-iommu.h
> @@ -433,6 +433,7 @@ enum {
>  
>  #define VTD_FLAG_TRANS_PRE_ENABLED	(1 << 0)
>  #define VTD_FLAG_IRQ_REMAP_PRE_ENABLED	(1 << 1)
> +#define VTD_FLAG_SVM_CAPABLE		(1 << 2)

I think I would rather squash this into the next patch as there is no
user here.

Thanks

Eric
>  
>  extern int intel_iommu_sm;
>  
>