linux-kernel - [PATCH v6 0/9] KVM/ARM: Some vgic fixes and init sequence KVM selftests

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Message-Id: <20210405163941.510258-1-eric.auger@redhat.com>
Date:   Mon,  5 Apr 2021 18:39:32 +0200
From:   Eric Auger <eric.auger@...hat.com>
To:     eric.auger.pro@...il.com, eric.auger@...hat.com,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        kvmarm@...ts.cs.columbia.edu, maz@...nel.org, drjones@...hat.com,
        alexandru.elisei@....com
Cc:     james.morse@....com, suzuki.poulose@....com, shuah@...nel.org,
        pbonzini@...hat.com
Subject: [PATCH v6 0/9] KVM/ARM: Some vgic fixes and init sequence KVM selftests

While writting vgic v3 init sequence KVM selftests I noticed some
relatively minor issues. This was also the opportunity to try to
fix the issue laterly reported by Zenghui, related to the RDIST_TYPER
last bit emulation. The final patch is a first batch of VGIC init
sequence selftests. Of course they can be augmented with a lot more
register access tests, but let's try to move forward incrementally ...

Best Regards

Eric

This series can be found at:
https://github.com/eauger/linux/tree/vgic_kvmselftests_v6

History:

v5 -> v6:
- Fix the note in "KVM: arm64: vgic-v3: Expose
  GICR_TYPER.Last for userspace", confirming the rdist
  region list is sorted by index and not by base address.
- Properly send 9 patches  :-/

v4 -> v5:
- rewrite the last bit detection according to Marc's
  interpretation of the spec and modify the kvm selftests
  accordingly
v3 -> v4:
- take into account Drew's comment on the kvm selftests. No
  change to the KVM related patches compared to v3
v2 ->v3:
- reworked last bit read accessor to handle contiguous redist
  regions and rdist not registered in ascending order
- removed [PATCH 5/9] KVM: arm: move has_run_once after the
  map_resources
v1 -> v2:
- Took into account all comments from Marc and Alexandru's except
  the has_run_once still after the map_resources (this would oblige
  me to revisit in depth the selftests)


Eric Auger (9):
  KVM: arm64: vgic-v3: Fix some error codes when setting RDIST base
  KVM: arm64: Fix KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION read
  KVM: arm64: vgic-v3: Fix error handling in vgic_v3_set_redist_base()
  KVM: arm/arm64: vgic: Reset base address on kvm_vgic_dist_destroy()
  docs: kvm: devices/arm-vgic-v3: enhance KVM_DEV_ARM_VGIC_CTRL_INIT doc
  KVM: arm64: Simplify argument passing to vgic_uaccess_[read|write]
  kvm: arm64: vgic-v3: Introduce vgic_v3_free_redist_region()
  KVM: arm64: vgic-v3: Expose GICR_TYPER.Last for userspace
  KVM: selftests: aarch64/vgic-v3 init sequence tests

 .../virt/kvm/devices/arm-vgic-v3.rst          |   2 +-
 arch/arm64/kvm/vgic/vgic-init.c               |  12 +-
 arch/arm64/kvm/vgic/vgic-kvm-device.c         |   3 +
 arch/arm64/kvm/vgic/vgic-mmio-v3.c            |  93 +--
 arch/arm64/kvm/vgic/vgic-mmio.c               |  10 +-
 arch/arm64/kvm/vgic/vgic.h                    |   1 +
 include/kvm/arm_vgic.h                        |   1 +
 tools/testing/selftests/kvm/.gitignore        |   1 +
 tools/testing/selftests/kvm/Makefile          |   1 +
 .../testing/selftests/kvm/aarch64/vgic_init.c | 585 ++++++++++++++++++
 .../testing/selftests/kvm/include/kvm_util.h  |   9 +
 tools/testing/selftests/kvm/lib/kvm_util.c    |  77 +++
 12 files changed, 746 insertions(+), 49 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/aarch64/vgic_init.c

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2.26.3