diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/state_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/state_test.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/state_test.c b/tools/testing/selftests/kvm/x86_64/state_test.c deleted file mode 100644 index ea578971fb9f..000000000000 --- a/tools/testing/selftests/kvm/x86_64/state_test.c +++ /dev/null @@ -1,229 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * KVM_GET/SET_* tests - * - * Copyright (C) 2018, Red Hat, Inc. - * - * Tests for vCPU state save/restore, including nested guest state. - */ -#define _GNU_SOURCE /* for program_invocation_short_name */ -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/ioctl.h> - -#include "test_util.h" - -#include "kvm_util.h" -#include "processor.h" -#include "vmx.h" -#include "svm_util.h" - -#define L2_GUEST_STACK_SIZE 256 - -void svm_l2_guest_code(void) -{ - GUEST_SYNC(4); - /* Exit to L1 */ - vmcall(); - GUEST_SYNC(6); - /* Done, exit to L1 and never come back. */ - vmcall(); -} - -static void svm_l1_guest_code(struct svm_test_data *svm) -{ - unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE]; - struct vmcb *vmcb = svm->vmcb; - - GUEST_ASSERT(svm->vmcb_gpa); - /* Prepare for L2 execution. */ - generic_svm_setup(svm, svm_l2_guest_code, - &l2_guest_stack[L2_GUEST_STACK_SIZE]); - - GUEST_SYNC(3); - run_guest(vmcb, svm->vmcb_gpa); - GUEST_ASSERT(vmcb->control.exit_code == SVM_EXIT_VMMCALL); - GUEST_SYNC(5); - vmcb->save.rip += 3; - run_guest(vmcb, svm->vmcb_gpa); - GUEST_ASSERT(vmcb->control.exit_code == SVM_EXIT_VMMCALL); - GUEST_SYNC(7); -} - -void vmx_l2_guest_code(void) -{ - GUEST_SYNC(6); - - /* Exit to L1 */ - vmcall(); - - /* L1 has now set up a shadow VMCS for us. */ - GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee); - GUEST_SYNC(10); - GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee); - GUEST_ASSERT(!vmwrite(GUEST_RIP, 0xc0fffee)); - GUEST_SYNC(11); - GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0fffee); - GUEST_ASSERT(!vmwrite(GUEST_RIP, 0xc0ffffee)); - GUEST_SYNC(12); - - /* Done, exit to L1 and never come back. */ - vmcall(); -} - -static void vmx_l1_guest_code(struct vmx_pages *vmx_pages) -{ - unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE]; - - GUEST_ASSERT(vmx_pages->vmcs_gpa); - GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages)); - GUEST_SYNC(3); - GUEST_ASSERT(load_vmcs(vmx_pages)); - GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa); - - GUEST_SYNC(4); - GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa); - - prepare_vmcs(vmx_pages, vmx_l2_guest_code, - &l2_guest_stack[L2_GUEST_STACK_SIZE]); - - GUEST_SYNC(5); - GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa); - GUEST_ASSERT(!vmlaunch()); - GUEST_ASSERT(vmptrstz() == vmx_pages->vmcs_gpa); - GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL); - - /* Check that the launched state is preserved. */ - GUEST_ASSERT(vmlaunch()); - - GUEST_ASSERT(!vmresume()); - GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL); - - GUEST_SYNC(7); - GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL); - - GUEST_ASSERT(!vmresume()); - GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL); - - vmwrite(GUEST_RIP, vmreadz(GUEST_RIP) + 3); - - vmwrite(SECONDARY_VM_EXEC_CONTROL, SECONDARY_EXEC_SHADOW_VMCS); - vmwrite(VMCS_LINK_POINTER, vmx_pages->shadow_vmcs_gpa); - - GUEST_ASSERT(!vmptrld(vmx_pages->shadow_vmcs_gpa)); - GUEST_ASSERT(vmlaunch()); - GUEST_SYNC(8); - GUEST_ASSERT(vmlaunch()); - GUEST_ASSERT(vmresume()); - - vmwrite(GUEST_RIP, 0xc0ffee); - GUEST_SYNC(9); - GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee); - - GUEST_ASSERT(!vmptrld(vmx_pages->vmcs_gpa)); - GUEST_ASSERT(!vmresume()); - GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL); - - GUEST_ASSERT(!vmptrld(vmx_pages->shadow_vmcs_gpa)); - GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffffee); - GUEST_ASSERT(vmlaunch()); - GUEST_ASSERT(vmresume()); - GUEST_SYNC(13); - GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffffee); - GUEST_ASSERT(vmlaunch()); - GUEST_ASSERT(vmresume()); -} - -static void __attribute__((__flatten__)) guest_code(void *arg) -{ - GUEST_SYNC(1); - GUEST_SYNC(2); - - if (arg) { - if (this_cpu_has(X86_FEATURE_SVM)) - svm_l1_guest_code(arg); - else - vmx_l1_guest_code(arg); - } - - GUEST_DONE(); -} - -int main(int argc, char *argv[]) -{ - vm_vaddr_t nested_gva = 0; - - struct kvm_regs regs1, regs2; - struct kvm_vcpu *vcpu; - struct kvm_vm *vm; - struct kvm_run *run; - struct kvm_x86_state *state; - struct ucall uc; - int stage; - - /* Create VM */ - vm = vm_create_with_one_vcpu(&vcpu, guest_code); - run = vcpu->run; - - vcpu_regs_get(vcpu, ®s1); - - if (kvm_has_cap(KVM_CAP_NESTED_STATE)) { - if (kvm_cpu_has(X86_FEATURE_SVM)) - vcpu_alloc_svm(vm, &nested_gva); - else if (kvm_cpu_has(X86_FEATURE_VMX)) - vcpu_alloc_vmx(vm, &nested_gva); - } - - if (!nested_gva) - pr_info("will skip nested state checks\n"); - - vcpu_args_set(vcpu, 1, nested_gva); - - for (stage = 1;; stage++) { - vcpu_run(vcpu); - TEST_ASSERT(run->exit_reason == KVM_EXIT_IO, - "Stage %d: unexpected exit reason: %u (%s),\n", - stage, run->exit_reason, - exit_reason_str(run->exit_reason)); - - switch (get_ucall(vcpu, &uc)) { - case UCALL_ABORT: - REPORT_GUEST_ASSERT(uc); - /* NOT REACHED */ - case UCALL_SYNC: - break; - case UCALL_DONE: - goto done; - default: - TEST_FAIL("Unknown ucall %lu", uc.cmd); - } - - /* UCALL_SYNC is handled here. */ - TEST_ASSERT(!strcmp((const char *)uc.args[0], "hello") && - uc.args[1] == stage, "Stage %d: Unexpected register values vmexit, got %lx", - stage, (ulong)uc.args[1]); - - state = vcpu_save_state(vcpu); - memset(®s1, 0, sizeof(regs1)); - vcpu_regs_get(vcpu, ®s1); - - kvm_vm_release(vm); - - /* Restore state in a new VM. */ - vcpu = vm_recreate_with_one_vcpu(vm); - vcpu_load_state(vcpu, state); - run = vcpu->run; - kvm_x86_state_cleanup(state); - - memset(®s2, 0, sizeof(regs2)); - vcpu_regs_get(vcpu, ®s2); - TEST_ASSERT(!memcmp(®s1, ®s2, sizeof(regs2)), - "Unexpected register values after vcpu_load_state; rdi: %lx rsi: %lx", - (ulong) regs2.rdi, (ulong) regs2.rsi); - } - -done: - kvm_vm_free(vm); -} |