| Message ID | 20240314232637.2538648-11-seanjc@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: selftests: Clean up x86's DT initialization | expand |
Sean Christopherson <seanjc@google.com> writes: > Initialize the IDT and exception handlers for all non-barebones VMs and > vCPUs on x86. Forcing tests to manually configure the IDT just to save > 8KiB of memory is a terrible tradeoff, and also leads to weird tests > (multiple tests have deliberately relied on shutdown to indicate success), > and hard-to-debug failures, e.g. instead of a precise unexpected exception > failure, tests see only shutdown. > > Signed-off-by: Sean Christopherson <seanjc@google.com> > --- > tools/testing/selftests/kvm/include/x86_64/processor.h | 2 -- > tools/testing/selftests/kvm/lib/x86_64/processor.c | 8 ++++++-- > tools/testing/selftests/kvm/x86_64/amx_test.c | 2 -- > tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c | 2 -- > tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c | 2 -- > tools/testing/selftests/kvm/x86_64/hyperv_features.c | 6 ------ > tools/testing/selftests/kvm/x86_64/hyperv_ipi.c | 3 --- > tools/testing/selftests/kvm/x86_64/kvm_pv_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/platform_info_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/pmu_counters_test.c | 3 --- > .../testing/selftests/kvm/x86_64/pmu_event_filter_test.c | 6 ------ > .../kvm/x86_64/smaller_maxphyaddr_emulation_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c | 3 --- > .../selftests/kvm/x86_64/svm_nested_shutdown_test.c | 3 --- > .../selftests/kvm/x86_64/svm_nested_soft_inject_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/ucna_injection_test.c | 4 ---- > .../selftests/kvm/x86_64/userspace_msr_exit_test.c | 3 --- > .../kvm/x86_64/vmx_exception_with_invalid_guest_state.c | 3 --- > tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c | 2 -- > tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | 3 --- > tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c | 2 -- > 23 files changed, 6 insertions(+), 69 deletions(-) > > diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h > index d6ffe03c9d0b..4804abe00158 100644 > --- a/tools/testing/selftests/kvm/include/x86_64/processor.h > +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h > @@ -1129,8 +1129,6 @@ struct idt_entry { > uint32_t offset2; uint32_t reserved; > }; > > -void vm_init_descriptor_tables(struct kvm_vm *vm); > -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu); > void vm_install_exception_handler(struct kvm_vm *vm, int vector, > void (*handler)(struct ex_regs *)); > > diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c > index d6bfe96a6a77..5813d93b2e7c 100644 > --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c > +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c > @@ -540,7 +540,7 @@ static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, > kvm_seg_fill_gdt_64bit(vm, segp); > } > > -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) > +static void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) > { > struct kvm_vm *vm = vcpu->vm; > struct kvm_sregs sregs; > @@ -585,6 +585,8 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) > > sregs.cr3 = vm->pgd; > vcpu_sregs_set(vcpu, &sregs); > + > + vcpu_init_descriptor_tables(vcpu); > } > > static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, > @@ -638,7 +640,7 @@ void route_exception(struct ex_regs *regs) > regs->vector, regs->rip); > } > > -void vm_init_descriptor_tables(struct kvm_vm *vm) > +static void vm_init_descriptor_tables(struct kvm_vm *vm) > { > extern void *idt_handlers; > int i; > @@ -670,6 +672,8 @@ void assert_on_unhandled_exception(struct kvm_vcpu *vcpu) > void kvm_arch_vm_post_create(struct kvm_vm *vm) > { > vm_create_irqchip(vm); > + vm_init_descriptor_tables(vm); > + > sync_global_to_guest(vm, host_cpu_is_intel); > sync_global_to_guest(vm, host_cpu_is_amd); > > diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c > index eae521f050e0..ab6c31aee447 100644 > --- a/tools/testing/selftests/kvm/x86_64/amx_test.c > +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c > @@ -246,8 +246,6 @@ int main(int argc, char *argv[]) > vcpu_regs_get(vcpu, ®s1); > > /* Register #NM handler */ > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > vm_install_exception_handler(vm, NM_VECTOR, guest_nm_handler); > > /* amx cfg for guest_code */ > diff --git a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c > index f3c2239228b1..762628f7d4ba 100644 > --- a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c > +++ b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c > @@ -110,8 +110,6 @@ static void test_fix_hypercall(struct kvm_vcpu *vcpu, bool disable_quirk) > { > struct kvm_vm *vm = vcpu->vm; > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > vm_install_exception_handler(vcpu->vm, UD_VECTOR, guest_ud_handler); > > if (disable_quirk) > diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c > index 4c7257ecd2a6..4238691a755c 100644 > --- a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c > +++ b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c > @@ -258,8 +258,6 @@ int main(int argc, char *argv[]) > vcpu_args_set(vcpu, 3, vmx_pages_gva, hv_pages_gva, addr_gva2gpa(vm, hcall_page)); > vcpu_set_msr(vcpu, HV_X64_MSR_VP_INDEX, vcpu->id); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler); > vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler); > > diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c > index b923a285e96f..068e9c69710d 100644 > --- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c > +++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c > @@ -156,9 +156,6 @@ static void guest_test_msrs_access(void) > vcpu_init_cpuid(vcpu, prev_cpuid); > } > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > /* TODO: Make this entire test easier to maintain. */ > if (stage >= 21) > vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_SYNIC2, 0); > @@ -532,9 +529,6 @@ static void guest_test_hcalls_access(void) > while (true) { > vm = vm_create_with_one_vcpu(&vcpu, guest_hcall); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > /* Hypercall input/output */ > hcall_page = vm_vaddr_alloc_pages(vm, 2); > memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize()); > diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c > index f1617762c22f..c6a03141cdaa 100644 > --- a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c > +++ b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c > @@ -256,16 +256,13 @@ int main(int argc, char *argv[]) > hcall_page = vm_vaddr_alloc_pages(vm, 2); > memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize()); > > - vm_init_descriptor_tables(vm); > > vcpu[1] = vm_vcpu_add(vm, RECEIVER_VCPU_ID_1, receiver_code); > - vcpu_init_descriptor_tables(vcpu[1]); > vcpu_args_set(vcpu[1], 2, hcall_page, addr_gva2gpa(vm, hcall_page)); > vcpu_set_msr(vcpu[1], HV_X64_MSR_VP_INDEX, RECEIVER_VCPU_ID_1); > vcpu_set_hv_cpuid(vcpu[1]); > > vcpu[2] = vm_vcpu_add(vm, RECEIVER_VCPU_ID_2, receiver_code); > - vcpu_init_descriptor_tables(vcpu[2]); > vcpu_args_set(vcpu[2], 2, hcall_page, addr_gva2gpa(vm, hcall_page)); > vcpu_set_msr(vcpu[2], HV_X64_MSR_VP_INDEX, RECEIVER_VCPU_ID_2); > vcpu_set_hv_cpuid(vcpu[2]); > diff --git a/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c b/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c > index 9e2879af7c20..cef0bd80038b 100644 > --- a/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c > +++ b/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c > @@ -146,9 +146,6 @@ int main(void) > > vcpu_clear_cpuid_entry(vcpu, KVM_CPUID_FEATURES); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > enter_guest(vcpu); > kvm_vm_free(vm); > } > diff --git a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c > index 853802641e1e..9c8445379d76 100644 > --- a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c > +++ b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c > @@ -80,9 +80,6 @@ int main(int argc, char *argv[]) > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > vcpu_clear_cpuid_feature(vcpu, X86_FEATURE_MWAIT); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > while (1) { > vcpu_run(vcpu); > TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); > diff --git a/tools/testing/selftests/kvm/x86_64/platform_info_test.c b/tools/testing/selftests/kvm/x86_64/platform_info_test.c > index 6300bb70f028..9cf2b9fbf459 100644 > --- a/tools/testing/selftests/kvm/x86_64/platform_info_test.c > +++ b/tools/testing/selftests/kvm/x86_64/platform_info_test.c > @@ -51,9 +51,6 @@ int main(int argc, char *argv[]) > > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > msr_platform_info = vcpu_get_msr(vcpu, MSR_PLATFORM_INFO); > vcpu_set_msr(vcpu, MSR_PLATFORM_INFO, > msr_platform_info | MSR_PLATFORM_INFO_MAX_TURBO_RATIO); > diff --git a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c > index 29609b52f8fa..ff6d21d148de 100644 > --- a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c > +++ b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c > @@ -31,9 +31,6 @@ static struct kvm_vm *pmu_vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, > struct kvm_vm *vm; > > vm = vm_create_with_one_vcpu(vcpu, guest_code); > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(*vcpu); > - > sync_global_to_guest(vm, kvm_pmu_version); > sync_global_to_guest(vm, is_forced_emulation_enabled); > > diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c > index 3c85d1ae9893..5cbe9d331acb 100644 > --- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c > +++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c > @@ -337,9 +337,6 @@ static void test_pmu_config_disable(void (*guest_code)(void)) > vm_enable_cap(vm, KVM_CAP_PMU_CAPABILITY, KVM_PMU_CAP_DISABLE); > > vcpu = vm_vcpu_add(vm, 0, guest_code); > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > TEST_ASSERT(!sanity_check_pmu(vcpu), > "Guest should not be able to use disabled PMU."); > > @@ -876,9 +873,6 @@ int main(int argc, char *argv[]) > > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > TEST_REQUIRE(sanity_check_pmu(vcpu)); > > if (use_amd_pmu()) > diff --git a/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c b/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c > index 416207c38a17..0d682d6b76f1 100644 > --- a/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c > +++ b/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c > @@ -60,9 +60,6 @@ int main(int argc, char *argv[]) > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > vcpu_args_set(vcpu, 1, kvm_is_tdp_enabled()); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > vcpu_set_cpuid_property(vcpu, X86_PROPERTY_MAX_PHY_ADDR, MAXPHYADDR); > > rc = kvm_check_cap(KVM_CAP_EXIT_ON_EMULATION_FAILURE); > diff --git a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c > index 32bef39bec21..916e04248fbb 100644 > --- a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c > +++ b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c > @@ -93,9 +93,6 @@ int main(int argc, char *argv[]) > > vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > vm_install_exception_handler(vm, VINTR_IRQ_NUMBER, vintr_irq_handler); > vm_install_exception_handler(vm, INTR_IRQ_NUMBER, intr_irq_handler); > > diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c > index f4a1137e04ab..00135cbba35e 100644 > --- a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c > +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c > @@ -48,9 +48,6 @@ int main(int argc, char *argv[]) > TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM)); > > vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > vcpu_alloc_svm(vm, &svm_gva); > > vcpu_args_set(vcpu, 2, svm_gva, vm->arch.idt); > diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c > index 2478a9e50743..7b6481d6c0d3 100644 > --- a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c > +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c > @@ -152,9 +152,6 @@ static void run_test(bool is_nmi) > > vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler); > vm_install_exception_handler(vm, BP_VECTOR, guest_bp_handler); > vm_install_exception_handler(vm, INT_NR, guest_int_handler); > diff --git a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c > index bc9be20f9600..6eeb5dd1e65c 100644 > --- a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c > +++ b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c > @@ -284,10 +284,6 @@ int main(int argc, char *argv[]) > cmcidis_vcpu = create_vcpu_with_mce_cap(vm, 1, false, cmci_disabled_guest_code); > cmci_vcpu = create_vcpu_with_mce_cap(vm, 2, true, cmci_enabled_guest_code); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(ucna_vcpu); > - vcpu_init_descriptor_tables(cmcidis_vcpu); > - vcpu_init_descriptor_tables(cmci_vcpu); > vm_install_exception_handler(vm, CMCI_VECTOR, guest_cmci_handler); > vm_install_exception_handler(vm, GP_VECTOR, guest_gp_handler); > > diff --git a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c > index f4f61a2d2464..fffda40e286f 100644 > --- a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c > +++ b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c > @@ -531,9 +531,6 @@ KVM_ONE_VCPU_TEST(user_msr, msr_filter_allow, guest_code_filter_allow) > > vm_ioctl(vm, KVM_X86_SET_MSR_FILTER, &filter_allow); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > vm_install_exception_handler(vm, GP_VECTOR, guest_gp_handler); > > /* Process guest code userspace exits. */ > diff --git a/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c b/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c > index fad3634fd9eb..3fd6eceab46f 100644 > --- a/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c > +++ b/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c > @@ -115,9 +115,6 @@ int main(int argc, char *argv[]) > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > get_set_sigalrm_vcpu(vcpu); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler); > > /* > diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c > index ea0cb3cae0f7..1b6e20e3a56d 100644 > --- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c > +++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c > @@ -86,9 +86,6 @@ KVM_ONE_VCPU_TEST(vmx_pmu_caps, guest_wrmsr_perf_capabilities, guest_code) > struct ucall uc; > int r, i; > > - vm_init_descriptor_tables(vcpu->vm); > - vcpu_init_descriptor_tables(vcpu); > - > vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, host_cap.capabilities); > > vcpu_args_set(vcpu, 1, host_cap.capabilities); > diff --git a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c > index 725c206ba0b9..f51084061134 100644 > --- a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c > +++ b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c > @@ -410,8 +410,6 @@ int main(int argc, char *argv[]) > > vm = vm_create_with_one_vcpu(¶ms[0].vcpu, halter_guest_code); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(params[0].vcpu); > vm_install_exception_handler(vm, IPI_VECTOR, guest_ipi_handler); > > virt_pg_map(vm, APIC_DEFAULT_GPA, APIC_DEFAULT_GPA); > diff --git a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c > index 25a0b0db5c3c..95ce192d0753 100644 > --- a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c > +++ b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c > @@ -109,9 +109,6 @@ int main(int argc, char *argv[]) > vm = vm_create_with_one_vcpu(&vcpu, guest_code); > run = vcpu->run; > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > - > while (1) { > vcpu_run(vcpu); > > diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c > index d2ea0435f4f7..a7236f17dfd0 100644 > --- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c > +++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c > @@ -553,8 +553,6 @@ int main(int argc, char *argv[]) > }; > vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &vec); > > - vm_init_descriptor_tables(vm); > - vcpu_init_descriptor_tables(vcpu); > vm_install_exception_handler(vm, EVTCHN_VECTOR, evtchn_handler); > > if (do_runstate_tests) { > -- > 2.44.0.291.gc1ea87d7ee-goog Reviewed-by: Ackerley Tng <ackerleytng@google.com>
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h index d6ffe03c9d0b..4804abe00158 100644 --- a/tools/testing/selftests/kvm/include/x86_64/processor.h +++ b/tools/testing/selftests/kvm/include/x86_64/processor.h @@ -1129,8 +1129,6 @@ struct idt_entry { uint32_t offset2; uint32_t reserved; }; -void vm_init_descriptor_tables(struct kvm_vm *vm); -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu); void vm_install_exception_handler(struct kvm_vm *vm, int vector, void (*handler)(struct ex_regs *)); diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c index d6bfe96a6a77..5813d93b2e7c 100644 --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c @@ -540,7 +540,7 @@ static void kvm_setup_tss_64bit(struct kvm_vm *vm, struct kvm_segment *segp, kvm_seg_fill_gdt_64bit(vm, segp); } -void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) +static void vcpu_init_descriptor_tables(struct kvm_vcpu *vcpu) { struct kvm_vm *vm = vcpu->vm; struct kvm_sregs sregs; @@ -585,6 +585,8 @@ static void vcpu_init_sregs(struct kvm_vm *vm, struct kvm_vcpu *vcpu) sregs.cr3 = vm->pgd; vcpu_sregs_set(vcpu, &sregs); + + vcpu_init_descriptor_tables(vcpu); } static void set_idt_entry(struct kvm_vm *vm, int vector, unsigned long addr, @@ -638,7 +640,7 @@ void route_exception(struct ex_regs *regs) regs->vector, regs->rip); } -void vm_init_descriptor_tables(struct kvm_vm *vm) +static void vm_init_descriptor_tables(struct kvm_vm *vm) { extern void *idt_handlers; int i; @@ -670,6 +672,8 @@ void assert_on_unhandled_exception(struct kvm_vcpu *vcpu) void kvm_arch_vm_post_create(struct kvm_vm *vm) { vm_create_irqchip(vm); + vm_init_descriptor_tables(vm); + sync_global_to_guest(vm, host_cpu_is_intel); sync_global_to_guest(vm, host_cpu_is_amd); diff --git a/tools/testing/selftests/kvm/x86_64/amx_test.c b/tools/testing/selftests/kvm/x86_64/amx_test.c index eae521f050e0..ab6c31aee447 100644 --- a/tools/testing/selftests/kvm/x86_64/amx_test.c +++ b/tools/testing/selftests/kvm/x86_64/amx_test.c @@ -246,8 +246,6 @@ int main(int argc, char *argv[]) vcpu_regs_get(vcpu, ®s1); /* Register #NM handler */ - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vm, NM_VECTOR, guest_nm_handler); /* amx cfg for guest_code */ diff --git a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c index f3c2239228b1..762628f7d4ba 100644 --- a/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c +++ b/tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c @@ -110,8 +110,6 @@ static void test_fix_hypercall(struct kvm_vcpu *vcpu, bool disable_quirk) { struct kvm_vm *vm = vcpu->vm; - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vcpu->vm, UD_VECTOR, guest_ud_handler); if (disable_quirk) diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c index 4c7257ecd2a6..4238691a755c 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c @@ -258,8 +258,6 @@ int main(int argc, char *argv[]) vcpu_args_set(vcpu, 3, vmx_pages_gva, hv_pages_gva, addr_gva2gpa(vm, hcall_page)); vcpu_set_msr(vcpu, HV_X64_MSR_VP_INDEX, vcpu->id); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler); vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler); diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c index b923a285e96f..068e9c69710d 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c @@ -156,9 +156,6 @@ static void guest_test_msrs_access(void) vcpu_init_cpuid(vcpu, prev_cpuid); } - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - /* TODO: Make this entire test easier to maintain. */ if (stage >= 21) vcpu_enable_cap(vcpu, KVM_CAP_HYPERV_SYNIC2, 0); @@ -532,9 +529,6 @@ static void guest_test_hcalls_access(void) while (true) { vm = vm_create_with_one_vcpu(&vcpu, guest_hcall); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - /* Hypercall input/output */ hcall_page = vm_vaddr_alloc_pages(vm, 2); memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize()); diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c index f1617762c22f..c6a03141cdaa 100644 --- a/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c +++ b/tools/testing/selftests/kvm/x86_64/hyperv_ipi.c @@ -256,16 +256,13 @@ int main(int argc, char *argv[]) hcall_page = vm_vaddr_alloc_pages(vm, 2); memset(addr_gva2hva(vm, hcall_page), 0x0, 2 * getpagesize()); - vm_init_descriptor_tables(vm); vcpu[1] = vm_vcpu_add(vm, RECEIVER_VCPU_ID_1, receiver_code); - vcpu_init_descriptor_tables(vcpu[1]); vcpu_args_set(vcpu[1], 2, hcall_page, addr_gva2gpa(vm, hcall_page)); vcpu_set_msr(vcpu[1], HV_X64_MSR_VP_INDEX, RECEIVER_VCPU_ID_1); vcpu_set_hv_cpuid(vcpu[1]); vcpu[2] = vm_vcpu_add(vm, RECEIVER_VCPU_ID_2, receiver_code); - vcpu_init_descriptor_tables(vcpu[2]); vcpu_args_set(vcpu[2], 2, hcall_page, addr_gva2gpa(vm, hcall_page)); vcpu_set_msr(vcpu[2], HV_X64_MSR_VP_INDEX, RECEIVER_VCPU_ID_2); vcpu_set_hv_cpuid(vcpu[2]); diff --git a/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c b/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c index 9e2879af7c20..cef0bd80038b 100644 --- a/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c +++ b/tools/testing/selftests/kvm/x86_64/kvm_pv_test.c @@ -146,9 +146,6 @@ int main(void) vcpu_clear_cpuid_entry(vcpu, KVM_CPUID_FEATURES); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - enter_guest(vcpu); kvm_vm_free(vm); } diff --git a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c index 853802641e1e..9c8445379d76 100644 --- a/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c +++ b/tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c @@ -80,9 +80,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); vcpu_clear_cpuid_feature(vcpu, X86_FEATURE_MWAIT); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - while (1) { vcpu_run(vcpu); TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_IO); diff --git a/tools/testing/selftests/kvm/x86_64/platform_info_test.c b/tools/testing/selftests/kvm/x86_64/platform_info_test.c index 6300bb70f028..9cf2b9fbf459 100644 --- a/tools/testing/selftests/kvm/x86_64/platform_info_test.c +++ b/tools/testing/selftests/kvm/x86_64/platform_info_test.c @@ -51,9 +51,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - msr_platform_info = vcpu_get_msr(vcpu, MSR_PLATFORM_INFO); vcpu_set_msr(vcpu, MSR_PLATFORM_INFO, msr_platform_info | MSR_PLATFORM_INFO_MAX_TURBO_RATIO); diff --git a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c index 29609b52f8fa..ff6d21d148de 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_counters_test.c @@ -31,9 +31,6 @@ static struct kvm_vm *pmu_vm_create_with_one_vcpu(struct kvm_vcpu **vcpu, struct kvm_vm *vm; vm = vm_create_with_one_vcpu(vcpu, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(*vcpu); - sync_global_to_guest(vm, kvm_pmu_version); sync_global_to_guest(vm, is_forced_emulation_enabled); diff --git a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c index 3c85d1ae9893..5cbe9d331acb 100644 --- a/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c +++ b/tools/testing/selftests/kvm/x86_64/pmu_event_filter_test.c @@ -337,9 +337,6 @@ static void test_pmu_config_disable(void (*guest_code)(void)) vm_enable_cap(vm, KVM_CAP_PMU_CAPABILITY, KVM_PMU_CAP_DISABLE); vcpu = vm_vcpu_add(vm, 0, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - TEST_ASSERT(!sanity_check_pmu(vcpu), "Guest should not be able to use disabled PMU."); @@ -876,9 +873,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - TEST_REQUIRE(sanity_check_pmu(vcpu)); if (use_amd_pmu()) diff --git a/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c b/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c index 416207c38a17..0d682d6b76f1 100644 --- a/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c +++ b/tools/testing/selftests/kvm/x86_64/smaller_maxphyaddr_emulation_test.c @@ -60,9 +60,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); vcpu_args_set(vcpu, 1, kvm_is_tdp_enabled()); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vcpu_set_cpuid_property(vcpu, X86_PROPERTY_MAX_PHY_ADDR, MAXPHYADDR); rc = kvm_check_cap(KVM_CAP_EXIT_ON_EMULATION_FAILURE); diff --git a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c index 32bef39bec21..916e04248fbb 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c @@ -93,9 +93,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, VINTR_IRQ_NUMBER, vintr_irq_handler); vm_install_exception_handler(vm, INTR_IRQ_NUMBER, intr_irq_handler); diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c index f4a1137e04ab..00135cbba35e 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_shutdown_test.c @@ -48,9 +48,6 @@ int main(int argc, char *argv[]) TEST_REQUIRE(kvm_cpu_has(X86_FEATURE_SVM)); vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vcpu_alloc_svm(vm, &svm_gva); vcpu_args_set(vcpu, 2, svm_gva, vm->arch.idt); diff --git a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c index 2478a9e50743..7b6481d6c0d3 100644 --- a/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c +++ b/tools/testing/selftests/kvm/x86_64/svm_nested_soft_inject_test.c @@ -152,9 +152,6 @@ static void run_test(bool is_nmi) vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, NMI_VECTOR, guest_nmi_handler); vm_install_exception_handler(vm, BP_VECTOR, guest_bp_handler); vm_install_exception_handler(vm, INT_NR, guest_int_handler); diff --git a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c index bc9be20f9600..6eeb5dd1e65c 100644 --- a/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c +++ b/tools/testing/selftests/kvm/x86_64/ucna_injection_test.c @@ -284,10 +284,6 @@ int main(int argc, char *argv[]) cmcidis_vcpu = create_vcpu_with_mce_cap(vm, 1, false, cmci_disabled_guest_code); cmci_vcpu = create_vcpu_with_mce_cap(vm, 2, true, cmci_enabled_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(ucna_vcpu); - vcpu_init_descriptor_tables(cmcidis_vcpu); - vcpu_init_descriptor_tables(cmci_vcpu); vm_install_exception_handler(vm, CMCI_VECTOR, guest_cmci_handler); vm_install_exception_handler(vm, GP_VECTOR, guest_gp_handler); diff --git a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c index f4f61a2d2464..fffda40e286f 100644 --- a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c +++ b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c @@ -531,9 +531,6 @@ KVM_ONE_VCPU_TEST(user_msr, msr_filter_allow, guest_code_filter_allow) vm_ioctl(vm, KVM_X86_SET_MSR_FILTER, &filter_allow); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, GP_VECTOR, guest_gp_handler); /* Process guest code userspace exits. */ diff --git a/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c b/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c index fad3634fd9eb..3fd6eceab46f 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_exception_with_invalid_guest_state.c @@ -115,9 +115,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); get_set_sigalrm_vcpu(vcpu); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - vm_install_exception_handler(vm, UD_VECTOR, guest_ud_handler); /* diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c index ea0cb3cae0f7..1b6e20e3a56d 100644 --- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c +++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c @@ -86,9 +86,6 @@ KVM_ONE_VCPU_TEST(vmx_pmu_caps, guest_wrmsr_perf_capabilities, guest_code) struct ucall uc; int r, i; - vm_init_descriptor_tables(vcpu->vm); - vcpu_init_descriptor_tables(vcpu); - vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, host_cap.capabilities); vcpu_args_set(vcpu, 1, host_cap.capabilities); diff --git a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c index 725c206ba0b9..f51084061134 100644 --- a/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c +++ b/tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c @@ -410,8 +410,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(¶ms[0].vcpu, halter_guest_code); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(params[0].vcpu); vm_install_exception_handler(vm, IPI_VECTOR, guest_ipi_handler); virt_pg_map(vm, APIC_DEFAULT_GPA, APIC_DEFAULT_GPA); diff --git a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c index 25a0b0db5c3c..95ce192d0753 100644 --- a/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c +++ b/tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c @@ -109,9 +109,6 @@ int main(int argc, char *argv[]) vm = vm_create_with_one_vcpu(&vcpu, guest_code); run = vcpu->run; - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); - while (1) { vcpu_run(vcpu); diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c index d2ea0435f4f7..a7236f17dfd0 100644 --- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c +++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c @@ -553,8 +553,6 @@ int main(int argc, char *argv[]) }; vm_ioctl(vm, KVM_XEN_HVM_SET_ATTR, &vec); - vm_init_descriptor_tables(vm); - vcpu_init_descriptor_tables(vcpu); vm_install_exception_handler(vm, EVTCHN_VECTOR, evtchn_handler); if (do_runstate_tests) {
Initialize the IDT and exception handlers for all non-barebones VMs and vCPUs on x86. Forcing tests to manually configure the IDT just to save 8KiB of memory is a terrible tradeoff, and also leads to weird tests (multiple tests have deliberately relied on shutdown to indicate success), and hard-to-debug failures, e.g. instead of a precise unexpected exception failure, tests see only shutdown. Signed-off-by: Sean Christopherson <seanjc@google.com> --- tools/testing/selftests/kvm/include/x86_64/processor.h | 2 -- tools/testing/selftests/kvm/lib/x86_64/processor.c | 8 ++++++-- tools/testing/selftests/kvm/x86_64/amx_test.c | 2 -- tools/testing/selftests/kvm/x86_64/fix_hypercall_test.c | 2 -- tools/testing/selftests/kvm/x86_64/hyperv_evmcs.c | 2 -- tools/testing/selftests/kvm/x86_64/hyperv_features.c | 6 ------ tools/testing/selftests/kvm/x86_64/hyperv_ipi.c | 3 --- tools/testing/selftests/kvm/x86_64/kvm_pv_test.c | 3 --- tools/testing/selftests/kvm/x86_64/monitor_mwait_test.c | 3 --- tools/testing/selftests/kvm/x86_64/platform_info_test.c | 3 --- tools/testing/selftests/kvm/x86_64/pmu_counters_test.c | 3 --- .../testing/selftests/kvm/x86_64/pmu_event_filter_test.c | 6 ------ .../kvm/x86_64/smaller_maxphyaddr_emulation_test.c | 3 --- tools/testing/selftests/kvm/x86_64/svm_int_ctl_test.c | 3 --- .../selftests/kvm/x86_64/svm_nested_shutdown_test.c | 3 --- .../selftests/kvm/x86_64/svm_nested_soft_inject_test.c | 3 --- tools/testing/selftests/kvm/x86_64/ucna_injection_test.c | 4 ---- .../selftests/kvm/x86_64/userspace_msr_exit_test.c | 3 --- .../kvm/x86_64/vmx_exception_with_invalid_guest_state.c | 3 --- tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c | 3 --- tools/testing/selftests/kvm/x86_64/xapic_ipi_test.c | 2 -- tools/testing/selftests/kvm/x86_64/xcr0_cpuid_test.c | 3 --- tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c | 2 -- 23 files changed, 6 insertions(+), 69 deletions(-)