Re: [Xen-devel] xen/arm: Hiding SMMUs from Dom0 when using ACPI on Xen

[Manish Jaggi <mjaggi@xxxxxxxxxxxxxxxxxx>]

On 5/19/2017 1:39 AM, Julien Grall wrote:
> On 18/05/2017 21:02, Manish Jaggi wrote:
> > In the IORT table using the  PCI-RC node, SMMU node and ITS node,
> > RID->StreamID->Device-ID  mapping can be generated.
> > As per IORT spec toady, same RID can be mapped to different StreamIDs
> > using two ID Array elements with same RID range but different output
> > reference.
> > There exists no use case for such a scenario hence a clarification is
> > required in IORT spec which states that RID range cannot overlap in the
> > ID array.
> I understand that.
>
> > with this clarification in place, it is straight-forward to map RID to a
> > device-ID by replacing output of SMMU to output of RCI-RC
> I am not sure to follow your suggestion here. But I will wait a patch 
> before commenting.
Please see [RFC] [PATCH] arm-acpi: Hide SMMU from IORT for hardware domain
> Cheers,

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel