[kvm-unit-tests,v2,00/16] arm/arm64: Add ITS tests

Message

Eric Auger Jan. 10, 2020, 2:53 p.m. UTC

This series is a revival of an RFC series sent in Dec 2016 [1].
Given the amount of code and the lack of traction at that time,
I haven't respinned until now. However a recent bug found related
to the ITS migration convinced me that this work may deserve to be
respinned and enhanced.

Tests exercise main ITS commands and also test migration.
With the migration framework, we are able to trigger the
migration from guest and that is very practical actually.

What is particular with the ITS programming is that most of
the commands are passed through queues and there is real error
handling. Invalid commands are just ignored and that is not
really tester friendly.

This series includes Andre's patch: "arm: gic: Provide
per-IRQ helper functions" [2]

test_migrate_unmapped_collection is currently failing with
upstream kernel. See [3].

The series can be fount at:
https://github.com/eauger/kut/tree/its-v2

Best Regards

Eric

History:
v1 -> v2:
- took into account Zenghui's comments
- collect R-b's from Thomas

References:
[1] [kvm-unit-tests RFC 00/15] arm/arm64: add ITS framework
    https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg00575.html

[2] [kvm-unit-tests PATCH 00/17] arm: gic: Test SPIs and interrupt groups
    https://patchwork.kernel.org/cover/11234975/

[3] [PATCH] KVM: arm/arm64: vgic-its: Fix restoration of unmappedxi
    collections (https://lkml.org/lkml/2019/12/13/205)

Execution:
x For ITS migration testing use:
  ./run_tests.sh -g migration (blocks on TCG)

x For other ITS tests:
  ./run_tests.sh -g its

x non migration tests can be launched invidually. For instance:
  ./arm-run arm/gic.flat -smp 8 -append 'its-trigger'

Andre Przywara (1):
  arm: gic: Provide per-IRQ helper functions

Eric Auger (15):
  libcflat: Add other size defines
  arm/arm64: gic: Introduce setup_irq() helper
  arm/arm64: gicv3: Add some re-distributor defines
  arm/arm64: ITS: Introspection tests
  arm/arm64: ITS: Test BASER
  arm/arm64: ITS: Set the LPI config and pending tables
  arm/arm64: ITS: Init the command queue
  arm/arm64: ITS: Enable/Disable LPIs at re-distributor level
  arm/arm64: ITS: its_enable_defaults
  arm/arm64: ITS: Device and collection Initialization
  arm/arm64: ITS: commands
  arm/arm64: ITS: INT functional tests
  arm/run: Allow Migration tests
  arm/arm64: ITS: migration tests
  arm/arm64: ITS: pending table migration test

 arm/Makefile.common        |   3 +-
 arm/gic.c                  | 446 ++++++++++++++++++++++++++++++++++--
 arm/run                    |   2 +-
 arm/unittests.cfg          |  39 ++++
 lib/arm/asm/gic-v3-its.h   | 177 +++++++++++++++
 lib/arm/asm/gic-v3.h       |  20 ++
 lib/arm/asm/gic.h          |  12 +
 lib/arm/gic-v3-its-cmd.c   | 453 +++++++++++++++++++++++++++++++++++++
 lib/arm/gic-v3-its.c       | 327 ++++++++++++++++++++++++++
 lib/arm/gic.c              | 132 ++++++++++-
 lib/arm/io.c               |  13 ++
 lib/arm64/asm/gic-v3-its.h |   1 +
 lib/libcflat.h             |   3 +
 13 files changed, 1600 insertions(+), 28 deletions(-)
 create mode 100644 lib/arm/asm/gic-v3-its.h
 create mode 100644 lib/arm/gic-v3-its-cmd.c
 create mode 100644 lib/arm/gic-v3-its.c
 create mode 100644 lib/arm64/asm/gic-v3-its.h