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

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Date: Wed, 15 May 2024 17:22:54 +0000
From: Sebastian Ene <sebastianene@...gle.com>
To: catalin.marinas@....com, james.morse@....com, jean-philippe@...aro.org, 
	maz@...nel.org, oliver.upton@...ux.dev, qperret@...gle.com, 
	qwandor@...gle.com, sudeep.holla@....com, suzuki.poulose@....com, 
	tabba@...gle.com, will@...nel.org, yuzenghui@...wei.com, 
	lpieralisi@...nel.org
Cc: kvmarm@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
	linux-kernel@...r.kernel.org, kernel-team@...roid.com, 
	Sebastian Ene <sebastianene@...gle.com>
Subject: [PATCH v2 0/4] KVM: arm64: pKVM host proxy FF-A fixes

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