Add arch_timer_edge_cases selftest to test various corner cases of the
ARM timers such as:
* timers above the max TVAL value
* timers in the past
* moving counters ahead and behind pending timers
* reprogramming timers
* timers fired multiple times
* masking/unmasking using the timer control mask
These are intentionally unusual scenarios to stress compliance with
the arm architecture.
v6:
* Remove unused headers
* Declare const variables as static
* Clarify by using INT32_{MIN,MAX}
* Remove silly enum magic value
* Instead of commenting a function should be called with IRQs disabled,
just disable them in function
* Remove unnecessary loop in test_reprogram_timers()
* Lift some invariant assignments out of loops
* Add some comments around better explaining wm() (irq_wait_method)
functions
* Fix typos
v5:
https://lore.kernel.org/all/20240809183802.3572177-1-coltonlewis@xxxxxxxxxx/
v4:
https://lore.kernel.org/kvmarm/20240307183907.1184775-1-coltonlewis@xxxxxxxxxx/
v3:
https://lore.kernel.org/kvmarm/20231103192915.2209393-1-coltonlewis@xxxxxxxxxx/
v2:
https://lore.kernel.org/kvmarm/20230928210201.1310536-1-coltonlewis@xxxxxxxxxx/
v1:
https://lore.kernel.org/kvm/20230516213731.387132-1-coltonlewis@xxxxxxxxxx/
Colton Lewis (2):
KVM: selftests: Ensure pending interrupts are handled in arch_timer
test
KVM: arm64: selftests: Add arch_timer_edge_cases selftest
tools/testing/selftests/kvm/Makefile | 1 +
.../kvm/aarch64/arch_timer_edge_cases.c | 1062 +++++++++++++++++
.../testing/selftests/kvm/aarch64/vgic_irq.c | 11 +-
.../kvm/include/aarch64/arch_timer.h | 18 +-
.../selftests/kvm/include/aarch64/processor.h | 3 +
.../selftests/kvm/lib/aarch64/processor.c | 6 +
6 files changed, 1094 insertions(+), 7 deletions(-)
create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer_edge_cases.c
--
2.46.0.295.g3b9ea8a38a-goog
