Mon, Feb 15
Sep 23 2020
I haven't looked at in much detail but I think the shareability attributes would need to be exposed by the mm module, and then converted by ffa_memory_permissions_to_mode.
Sep 22 2020
SMMUv3.2 supports secure Stage-2 translations and that's the feature we intend to enable as a first step.
The IP also supports "nested translations" aka S-EL1 SMMU paravirtualization although we're not looking at this option immediately.
Sep 15 2020
Thanks for your reply, so there is Stage-2 SMMU support, right? And i think we can support passthrough io support in Secure-EL1 with Stage-2 SMMU
Sep 9 2020
We're considering the SMMUv3.2 support which covers the Secure Stage-2 mappings (https://developer.arm.com/documentation/ihi0070/latest).
This is still in initial investigation phases, but we hope to share design details and early patches by end of Q4'20.
Sep 7 2020
@odeprez / Arm might be able to comment on this.
Aug 29 2020
what about SMMUV3.x ?
Aug 20 2020
Jun 29 2020
Pursuing Jose's early work through Google's gerrit interface.
We'll provide more design details in the shared SPM doc.
Jun 25 2020
Jun 21 2020
Jun 19 2020
May 1 2020
Apr 29 2020
This should also include some interface for multiplexing secondary VM requests, first a documented convention and then a reference implementation.