On 16/09/21 20:15, Oliver Upton wrote:
This series implements new tests for the x86 and arm64 counter migration changes that I've mailed out. These are sent separately as a dependent change since there are cross-arch dependencies here. Patch 1 yanks the pvclock headers into the tools/ directory so we can make use of them within a KVM selftest guest. Patch 2 tests the new capabilities of the KVM_*_CLOCK ioctls, ensuring that the kernel accounts for elapsed time when restoring the KVM clock. Patches 3-4 add some device attribute helpers and clean up some mistakes in the assertions thereof. Patch 5 implements a test for the KVM_VCPU_TSC_OFFSET attribute, asserting that manipulation of the offset results in correct TSC values within the guest. Patch 6 adds basic arm64 support to the counter offset test, checking that the virtual counter-timer offset works correctly. Patch 7 does the same for the physical counter-timer offset. Patch 8 adds a benchmark for physical counter offsetting, since most implementations available right now will rely on emulation. Lastly, patch 9 extends the get-reg-list test to check for KVM_REG_ARM_TIMER_OFFSET if userspace opts-in to the kernel capability. This series applies cleanly to 5.15-rc1 Tests were ran against the respective architecture changes on the following systems: - Haswell (x86) - Ampere Mt. Jade (non-ECV, nVHE and VHE) v7: https://lore.kernel.org/r/20210816001246.3067312-1-oupton@xxxxxxxxxx v7 -> v8: - Rebased to 5.15-rc1 - Dropped helper for checking if reg exists in reg list (no longer necessary) - Test and enable KVM_CAP_ARM_VTIMER_OFFSET - Add get-reg-list changes Oliver Upton (9): tools: arch: x86: pull in pvclock headers selftests: KVM: Add test for KVM_{GET,SET}_CLOCK selftests: KVM: Fix kvm device helper ioctl assertions selftests: KVM: Add helpers for vCPU device attributes selftests: KVM: Introduce system counter offset test selftests: KVM: Add support for aarch64 to system_counter_offset_test selftests: KVM: Test physical counter offsetting selftests: KVM: Add counter emulation benchmark selftests: KVM: Test vtimer offset reg in get-reg-list tools/arch/x86/include/asm/pvclock-abi.h | 48 ++++ tools/arch/x86/include/asm/pvclock.h | 103 ++++++++ tools/testing/selftests/kvm/.gitignore | 3 + tools/testing/selftests/kvm/Makefile | 4 + .../kvm/aarch64/counter_emulation_benchmark.c | 207 ++++++++++++++++ .../selftests/kvm/aarch64/get-reg-list.c | 42 ++++ .../selftests/kvm/include/aarch64/processor.h | 24 ++ .../testing/selftests/kvm/include/kvm_util.h | 11 + tools/testing/selftests/kvm/lib/kvm_util.c | 44 +++- .../kvm/system_counter_offset_test.c | 220 ++++++++++++++++++ .../selftests/kvm/x86_64/kvm_clock_test.c | 204 ++++++++++++++++ 11 files changed, 907 insertions(+), 3 deletions(-) create mode 100644 tools/arch/x86/include/asm/pvclock-abi.h create mode 100644 tools/arch/x86/include/asm/pvclock.h create mode 100644 tools/testing/selftests/kvm/aarch64/counter_emulation_benchmark.c create mode 100644 tools/testing/selftests/kvm/system_counter_offset_test.c create mode 100644 tools/testing/selftests/kvm/x86_64/kvm_clock_test.c
Queued patches 1-5, thanks. Paolo
