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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2024-01-09 15:11:19 +0100 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-02-01 17:58:14 +0100 |
| commit | 09951bf2cbb3a7893f76d1364b0ae6e3007ff1de (patch) | |
| tree | 019184eb1ef6084978e7981fe709ba5ed6b69d43 /tools/testing | |
| parent | KVM: selftests: Use generic sys_clocksource_is_tsc() in vmx_nested_tsc_scalin... (diff) | |
| download | linux-09951bf2cbb3a7893f76d1364b0ae6e3007ff1de.tar.xz linux-09951bf2cbb3a7893f76d1364b0ae6e3007ff1de.zip | |
KVM: selftests: Run clocksource dependent tests with hyperv_clocksource_tsc_page too
KVM's 'gtod_is_based_on_tsc()' recognizes two clocksources: 'tsc' and
'hyperv_clocksource_tsc_page' and enables kvmclock in 'masterclock'
mode when either is in use. Transform 'sys_clocksource_is_tsc()' into
'sys_clocksource_is_based_on_tsc()' to support the later. This affects
two tests: kvm_clock_test and vmx_nested_tsc_scaling_test, both seem
to work well when system clocksource is 'hyperv_clocksource_tsc_page'.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240109141121.1619463-4-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing')
4 files changed, 6 insertions, 5 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index 01eec72e0d3e..5bca8c947c82 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -1271,6 +1271,6 @@ void virt_map_level(struct kvm_vm *vm, uint64_t vaddr, uint64_t paddr, #define PFERR_GUEST_PAGE_MASK BIT_ULL(PFERR_GUEST_PAGE_BIT) #define PFERR_IMPLICIT_ACCESS BIT_ULL(PFERR_IMPLICIT_ACCESS_BIT) -bool sys_clocksource_is_tsc(void); +bool sys_clocksource_is_based_on_tsc(void); #endif /* SELFTEST_KVM_PROCESSOR_H */ diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index e6964ff2a37d..f639b3e062e3 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -1300,10 +1300,11 @@ void kvm_selftest_arch_init(void) host_cpu_is_amd = this_cpu_is_amd(); } -bool sys_clocksource_is_tsc(void) +bool sys_clocksource_is_based_on_tsc(void) { char *clk_name = sys_get_cur_clocksource(); - bool ret = !strcmp(clk_name, "tsc\n"); + bool ret = !strcmp(clk_name, "tsc\n") || + !strcmp(clk_name, "hyperv_clocksource_tsc_page\n"); free(clk_name); diff --git a/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c b/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c index 6fcc1a433587..5bc12222d87a 100644 --- a/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c +++ b/tools/testing/selftests/kvm/x86_64/kvm_clock_test.c @@ -143,7 +143,7 @@ int main(void) flags = kvm_check_cap(KVM_CAP_ADJUST_CLOCK); TEST_REQUIRE(flags & KVM_CLOCK_REALTIME); - TEST_REQUIRE(sys_clocksource_is_tsc()); + TEST_REQUIRE(sys_clocksource_is_based_on_tsc()); vm = vm_create_with_one_vcpu(&vcpu, guest_main); diff --git a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c index 93b0a850a240..1759fa5cb3f2 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_nested_tsc_scaling_test.c @@ -131,7 +131,7 @@ int main(int argc, char *argv[]) TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_VMX)); TEST_REQUIRE(kvm_has_cap(KVM_CAP_TSC_CONTROL)); - TEST_REQUIRE(sys_clocksource_is_tsc()); + TEST_REQUIRE(sys_clocksource_is_based_on_tsc()); /* * We set L1's scale factor to be a random number from 2 to 10. |