Hello,
The patch series adds a KVM selftest to validate the behavior of
ARM's generic timer (patch-11). The test programs the timer IRQs
periodically, and for each interrupt, it validates the behaviour
against the architecture specifications. The test further provides
a command-line interface to configure the number of vCPUs, the
period of the timer, and the number of iterations that the test
has to run for.
Patch-12 adds an option to randomly migrate the vCPUs to different
physical CPUs across the system. The bug for the fix provided by
Marc with commit 3134cc8beb69d0d ("KVM: arm64: vgic: Resample HW
pending state on deactivation") was discovered using arch_timer
test with vCPU migrations.
Since the test heavily depends on interrupts, patch-10 adds a host
library to setup ARM Generic Interrupt Controller v3 (GICv3). This
includes creating a vGIC device, setting up distributor and
redistributor attributes, and mapping the guest physical addresses.
Symmetrical to this, patch-9 adds a guest library to talk to the vGIC,
which includes initializing the controller, enabling/disabling the
interrupts, and so on.
Furthermore, additional processor utilities such as accessing the MMIO
(via readl/writel), read/write to assembler unsupported registers,
basic delay generation, enable/disable local IRQs, and so on, are also
introduced that the test/GICv3 takes advantage of (patches 1 through 8).
The patch series, specifically the library support, is derived from the
kvm-unit-tests and the kernel itself.
Regards,
Raghavendra
v2 -> v3:
- Addressed the comments from Ricardo regarding moving the vGIC host
support for selftests to its own library.
- Added an option (-m) to migrate the guest vCPUs to physical CPUs
in the system.
v1 -> v2:
Addressed comments from Zenghui in include/aarch64/arch_timer.h:
- Correct the header description
- Remove unnecessary inclusion of linux/sizes.h
- Re-arrange CTL_ defines in ascending order
- Remove inappropriate 'return' from timer_set_* functions, which
returns 'void'.
Raghavendra Rao Ananta (12):
KVM: arm64: selftests: Add MMIO readl/writel support
KVM: arm64: selftests: Add write_sysreg_s and read_sysreg_s
KVM: arm64: selftests: Add support for cpu_relax
KVM: arm64: selftests: Add basic support for arch_timers
KVM: arm64: selftests: Add basic support to generate delays
KVM: arm64: selftests: Add support to disable and enable local IRQs
KVM: arm64: selftests: Add support to get the vcpuid from MPIDR_EL1
KVM: arm64: selftests: Add light-weight spinlock support
KVM: arm64: selftests: Add basic GICv3 support
KVM: arm64: selftests: Add host support for vGIC
KVM: arm64: selftests: Add arch_timer test
KVM: arm64: selftests: arch_timer: Support vCPU migration
tools/testing/selftests/kvm/.gitignore | 1 +
tools/testing/selftests/kvm/Makefile | 3 +-
.../selftests/kvm/aarch64/arch_timer.c | 457 ++++++++++++++++++
.../kvm/include/aarch64/arch_timer.h | 142 ++++++
.../selftests/kvm/include/aarch64/delay.h | 25 +
.../selftests/kvm/include/aarch64/gic.h | 21 +
.../selftests/kvm/include/aarch64/processor.h | 140 +++++-
.../selftests/kvm/include/aarch64/spinlock.h | 13 +
.../selftests/kvm/include/aarch64/vgic.h | 14 +
tools/testing/selftests/kvm/lib/aarch64/gic.c | 93 ++++
.../selftests/kvm/lib/aarch64/gic_private.h | 21 +
.../selftests/kvm/lib/aarch64/gic_v3.c | 240 +++++++++
.../selftests/kvm/lib/aarch64/gic_v3.h | 70 +++
.../selftests/kvm/lib/aarch64/spinlock.c | 27 ++
.../testing/selftests/kvm/lib/aarch64/vgic.c | 67 +++
15 files changed, 1332 insertions(+), 2 deletions(-)
create mode 100644 tools/testing/selftests/kvm/aarch64/arch_timer.c
create mode 100644 tools/testing/selftests/kvm/include/aarch64/arch_timer.h
create mode 100644 tools/testing/selftests/kvm/include/aarch64/delay.h
create mode 100644 tools/testing/selftests/kvm/include/aarch64/gic.h
create mode 100644 tools/testing/selftests/kvm/include/aarch64/spinlock.h
create mode 100644 tools/testing/selftests/kvm/include/aarch64/vgic.h
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic.c
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_private.h
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/gic_v3.h
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/spinlock.c
create mode 100644 tools/testing/selftests/kvm/lib/aarch64/vgic.c
--
2.33.0.153.gba50c8fa24-goog
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