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DGPaHdgYldAfSRH0XGJhcbX3ncsqziFJLQzx9JHzTtpuy0Pf8pFJJJrsYhsdq7y24fcDDmVbqFuAqdZ2mzRmiY+S/jRMy+SVWc3BROPJcNNdzfKJAM/18f7vwOir7+njKFoZxJkC4KmM365G7W8jOPIhy2VsuIMZDf+IlKAf7Z7CbwO8rEdXEQSq6lV8zIm/LMX6PzYghQKRaCNCBqfJG3msmIEjZ5jIccG6oOZvAlFQttS7hzF4mLoIm2Lyha+9rRtK2vWsY4TtaXy2ZA6oTqJLwyB+aEjk1vnNodmXGTRhdaozEbaoySbWn6C2eXVae6iUkhTnAjmuf8VFAY8IGXc0ie8ebelifXLQEMQyUGIJo95xSBa8IadBCzd/IRYd6egg4 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > +void verify_guest_msr_writes(void) > +{ > + struct kvm_vcpu *vcpu; > + struct kvm_vm *vm; > + > + uint64_t data; > + int ret; > + > + vm = td_create(); > + td_initialize(vm, VM_MEM_SRC_ANONYMOUS, 0); > + > + /* > + * Set explicit MSR filter map to control access to the MSR registers > + * used in the test. > + */ > + printf("\t ... Setting test MSR filter\n"); > + ret = kvm_check_cap(KVM_CAP_X86_USER_SPACE_MSR); > + TEST_ASSERT(ret, "KVM_CAP_X86_USER_SPACE_MSR is unavailable"); > + vm_enable_cap(vm, KVM_CAP_X86_USER_SPACE_MSR, KVM_MSR_EXIT_REASON_FILTER); > + > + ret = kvm_check_cap(KVM_CAP_X86_MSR_FILTER); > + TEST_ASSERT(ret, "KVM_CAP_X86_MSR_FILTER is unavailable"); > + > + ret = ioctl(vm->fd, KVM_X86_SET_MSR_FILTER, &tdx_msr_test_filter); > + TEST_ASSERT(ret == 0, > + "KVM_X86_SET_MSR_FILTER failed, ret: %i errno: %i (%s)", > + ret, errno, strerror(errno)); > + > + vcpu = td_vcpu_add(vm, 0, guest_msr_write); > + td_finalize(vm); > + > + printf("Verifying guest msr writes:\n"); > + > + printf("\t ... Running guest\n"); > + /* Only the write to MSR_IA32_MISC_ENABLE should trigger an exit */ > + td_vcpu_run(vcpu); > + TDX_TEST_CHECK_GUEST_FAILURE(vcpu); > + data = tdx_test_read_64bit_report_from_guest(vcpu); > + TEST_ASSERT_EQ(data, TDG_VP_VMCALL_INVALID_OPERAND); > + > + td_vcpu_run(vcpu); > + TDX_TEST_ASSERT_SUCCESS(vcpu); > + > + printf("\t ... Verifying MSR values writen by guest\n"); > + > + TEST_ASSERT_EQ(vcpu_get_msr(vcpu, MSR_X2APIC_APIC_ICR), 4); > + TEST_ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_MISC_ENABLE), 0x1800); It's not staightforward to assert MSR_IA32_MISC_ENABLE is 0x1800. Rather than assume MSR_IA32_MISC_ENABLE is reset to (MSR_IA32_MISC_ENABLE_PEBS_UNAVAIL | MSR_IA32_MISC_ENABLE_BTS_UNAVAIL) which is 0x1800, why not call vcpu_get_msr() before guest write and compare the saved value here? > + TEST_ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_POWER_CTL), 6); > + > + kvm_vm_free(vm); > + printf("\t ... PASSED\n"); > +} > + > + > int main(int argc, char **argv) > { > setbuf(stdout, NULL); > @@ -531,6 +738,8 @@ int main(int argc, char **argv) > run_in_new_process(&verify_get_td_vmcall_info); > run_in_new_process(&verify_guest_writes); > run_in_new_process(&verify_guest_reads); > + run_in_new_process(&verify_guest_msr_writes); > + run_in_new_process(&verify_guest_msr_reads); > > return 0; > } > -- > 2.43.0.472.g3155946c3a-goog > >