[PATCH v2 0/4] KVM: arm64: pKVM host proxy FF-A fixes

Sebastian Ene
2024-05-15T17:23:39Z

Hello,

This series contains some small fixes for the host pKVM proxy code. I included
some of the patches that I already sent on the list as part of this series
to make it easier to keep track of them.

I verified the functionality with OPTEE as a TEE-OS.

Changelog:

v1 -> v2:

* applied the feedback received from Will on the FFA_VERSION patch:
The spec requires that no other calls to be issued prior to the FFA
version negotiation and the current change reflects this. After the
version negotiation phase is complete with Trustzone we will just
return the hypervisor version.

* corrected some mistakes on the FFA_PARTITION_INFO_GET patch:
- don't trim the number of bytes copied from the hypervisor buffer
- introduce FFA_1_0_PARTITON_INFO_SZ definition
- simplify the logic when the input flag is specified

* collected the Ack from Will and embbeded it in the commit - Thanks Will !

v1:

* previously posted FFA_PARTITION_INFO_GET patch here:
https://lore.kernel.org/kvmarm/20240411133249.2134696-1-sebastianene@google.com/
-> minor changes from the previous version, look for the current
ffa_version in the host_buffer structure

* previously posted "Fix the identification range for the FF-A smcs" here:
https://lore.kernel.org/kvmarm/20240322124303.309423-1-sebastianene@google.com/

Thank you,
Sebastian

Sebastian Ene (4):
KVM: arm64: Trap FFA_VERSION host call in pKVM
KVM: arm64: Add support for FFA_PARTITION_INFO_GET
KVM: arm64: Fix the identification range for the FF-A smcs
KVM: arm64: Use FF-A 1.1 with pKVM

arch/arm64/kvm/hyp/include/nvhe/ffa.h | 2 +-
arch/arm64/kvm/hyp/nvhe/ffa.c | 183 +++++++++++++++++++++-----
include/linux/arm_ffa.h | 3 +
3 files changed, 154 insertions(+), 34 deletions(-)

--
2.45.0.rc1.225.g2a3ae87e7f-goog

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