[PATCH v2 0/8] RISCV: Add kvm Sstc timer selftest

[Haibo Xu]

The RISC-V arch_timer selftest is used to validate Sstc timer
functionality in a guest, which sets up periodic timer interrupts
and check the basic interrupt status upon its receipt.

This KVM selftest was ported from aarch64 arch_timer and tested
with Linux v6.5-rc5 on a Qemu riscv64 virt machine.

---
Changed since v1:
  * Rebase to kvm-riscv/riscv_kvm_next
  * Cherry-pick Sean's kselftest guest printf patch set
    https://lore.kernel.org/all/20230729003643.1053367-1-seanjc@xxxxxxxxxx/
  * Copy the entire csr.h verbatim
  * Unified the function names for exception vector table setup
    void vm_init_vector_tables(struct kvm_vm *vm);
    void vcpu_init_vector_tables(struct kvm_vcpu *vcpu);
  * Format the handler.S asm file per Andrew's comments
  * Consolidate the timer test code for arm64 and riscv
    based on Andrew's and Sean's suggestion

Haibo Xu (8):
  KVM: selftests: Unify the codes for guest exception handling
  KVM: arm64: selftest: Split arch_timer test code
  tools: riscv: Add header file csr.h
  KVM: riscv: selftests: Switch to use macro from csr.h
  KVM: riscv: selftests: Add exception handling support
  KVM: riscv: selftests: Add guest helper to get vcpu id
  KVM: riscv: selftest: Change vcpu_has_ext to a common function
  KVM: riscv: selftests: Add sstc timer test

 tools/arch/riscv/include/asm/csr.h            | 521 ++++++++++++++++++
 tools/testing/selftests/kvm/Makefile          |  11 +-
 .../selftests/kvm/aarch64/arch_timer.c        | 292 +---------
 .../selftests/kvm/aarch64/debug-exceptions.c  |   4 +-
 .../selftests/kvm/aarch64/page_fault_test.c   |   4 +-
 .../testing/selftests/kvm/aarch64/vgic_irq.c  |   4 +-
 tools/testing/selftests/kvm/arch_timer.c      | 261 +++++++++
 .../selftests/kvm/include/aarch64/processor.h |  12 +-
 .../selftests/kvm/include/kvm_util_base.h     |   9 +
 .../selftests/kvm/include/riscv/arch_timer.h  |  80 +++
 .../selftests/kvm/include/riscv/processor.h   |  60 +-
 .../selftests/kvm/include/timer_test.h        |  58 ++
 .../selftests/kvm/include/x86_64/processor.h  |   5 -
 .../selftests/kvm/lib/aarch64/processor.c     |   6 +-
 .../selftests/kvm/lib/riscv/handlers.S        | 101 ++++
 .../selftests/kvm/lib/riscv/processor.c       |  86 +++
 .../selftests/kvm/lib/x86_64/processor.c      |   4 +-
 .../testing/selftests/kvm/riscv/arch_timer.c  | 130 +++++
 .../selftests/kvm/riscv/get-reg-list.c        |  14 -
 tools/testing/selftests/kvm/x86_64/amx_test.c |   4 +-
 .../selftests/kvm/x86_64/fix_hypercall_test.c |   4 +-
 .../selftests/kvm/x86_64/hyperv_evmcs.c       |   4 +-
 .../selftests/kvm/x86_64/hyperv_features.c    |   8 +-
 .../testing/selftests/kvm/x86_64/hyperv_ipi.c |   6 +-
 .../selftests/kvm/x86_64/kvm_pv_test.c        |   4 +-
 .../selftests/kvm/x86_64/monitor_mwait_test.c |   4 +-
 .../kvm/x86_64/pmu_event_filter_test.c        |   8 +-
 .../smaller_maxphyaddr_emulation_test.c       |   4 +-
 .../selftests/kvm/x86_64/svm_int_ctl_test.c   |   4 +-
 .../kvm/x86_64/svm_nested_shutdown_test.c     |   4 +-
 .../kvm/x86_64/svm_nested_soft_inject_test.c  |   4 +-
 .../kvm/x86_64/ucna_injection_test.c          |   8 +-
 .../kvm/x86_64/userspace_msr_exit_test.c      |   4 +-
 .../vmx_exception_with_invalid_guest_state.c  |   4 +-
 .../selftests/kvm/x86_64/vmx_pmu_caps_test.c  |   4 +-
 .../selftests/kvm/x86_64/xapic_ipi_test.c     |   4 +-
 .../selftests/kvm/x86_64/xcr0_cpuid_test.c    |   4 +-
 .../selftests/kvm/x86_64/xen_shinfo_test.c    |   4 +-
 38 files changed, 1376 insertions(+), 376 deletions(-)
 create mode 100644 tools/arch/riscv/include/asm/csr.h
 create mode 100644 tools/testing/selftests/kvm/arch_timer.c
 create mode 100644 tools/testing/selftests/kvm/include/riscv/arch_timer.h
 create mode 100644 tools/testing/selftests/kvm/include/timer_test.h
 create mode 100644 tools/testing/selftests/kvm/lib/riscv/handlers.S
 create mode 100644 tools/testing/selftests/kvm/riscv/arch_timer.c

-- 
2.34.1