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[kvm-unit-tests RFC 00/10] KVM: arm64: PMUv3 Event Counter Tests

From: Eric Auger
Subject: [kvm-unit-tests RFC 00/10] KVM: arm64: PMUv3 Event Counter Tests
Date: Fri, 6 Dec 2019 18:27:14 +0100

This series implements tests exercising the PMUv3 event counters.
It tests both the 32-bit and 64-bit versions. Overflow interrupts
also are checked. Those tests only are written for arm64.

It allowed to reveal some issues related to SW_INCR implementation
(esp. related to 64-bit implementation), some problems related to
32-bit <-> 64-bit transitions and consistency of enabled states
of odd and event counters.

Overflow interrupt testing relies of one patch from Andre
("arm: gic: Provide per-IRQ helper functions") to enable the
PPI 23, coming from "arm: gic: Test SPIs and interrupt groups"
(https://patchwork.kernel.org/cover/11234975/). Drew kindly
provided "arm64: Provide read/write_sysreg_s".

All PMU tests can be launched with:
./run_tests.sh -g pmu
Tests also can be launched individually. For example:
./arm-run arm/pmu.flat -append 'chained-sw-incr'

With KVM:
- chain-promotion and chained-sw-incr are known to be failing.
- Problems were reported upstream.
With TCG:
- pmu-event-introspection is failing due to missing required events
  (we may remove this from TCG actually)
- chained-sw-incr also fails. I haven't investigated yet.

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

Andrew Jones (1):
  arm64: Provide read/write_sysreg_s

Eric Auger (8):
  pmu: Let pmu tests take a sub-test parameter
  pmu: Add a pmu struct
  pmu: Check Required Event Support
  pmu: Basic event counter Tests
  pmu: Test chained counter
  arm: pmu: test 32-bit <-> 64-bit transitions
  arm/arm64: gic: Introduce setup_irq() helper
  pmu: Test overflow interrupts

 arm/gic.c              |  24 +-
 arm/pmu.c              | 754 ++++++++++++++++++++++++++++++++++++++++-
 arm/unittests.cfg      |  55 ++-
 lib/arm/asm/gic-v3.h   |   2 +
 lib/arm/asm/gic.h      |  12 +
 lib/arm/gic.c          | 101 ++++++
 lib/arm64/asm/sysreg.h |  11 +
 7 files changed, 922 insertions(+), 37 deletions(-)


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