diff options
Diffstat (limited to 'tools/testing/selftests/kvm/x86_64/smm_test.c')
| -rw-r--r-- | tools/testing/selftests/kvm/x86_64/smm_test.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/tools/testing/selftests/kvm/x86_64/smm_test.c b/tools/testing/selftests/kvm/x86_64/smm_test.c deleted file mode 100644 index ae39a220609f..000000000000 --- a/tools/testing/selftests/kvm/x86_64/smm_test.c +++ /dev/null @@ -1,164 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Copyright (C) 2018, Red Hat, Inc. - * - * Tests for SMM. - */ -#define _GNU_SOURCE /* for program_invocation_short_name */ -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <stdint.h> -#include <string.h> -#include <sys/ioctl.h> - -#include "test_util.h" - -#include "kvm_util.h" - -#include "vmx.h" -#include "svm_util.h" - -#define VCPU_ID 1 - -#define PAGE_SIZE 4096 - -#define SMRAM_SIZE 65536 -#define SMRAM_MEMSLOT ((1 << 16) | 1) -#define SMRAM_PAGES (SMRAM_SIZE / PAGE_SIZE) -#define SMRAM_GPA 0x1000000 -#define SMRAM_STAGE 0xfe - -#define STR(x) #x -#define XSTR(s) STR(s) - -#define SYNC_PORT 0xe -#define DONE 0xff - -/* - * This is compiled as normal 64-bit code, however, SMI handler is executed - * in real-address mode. To stay simple we're limiting ourselves to a mode - * independent subset of asm here. - * SMI handler always report back fixed stage SMRAM_STAGE. - */ -uint8_t smi_handler[] = { - 0xb0, SMRAM_STAGE, /* mov $SMRAM_STAGE, %al */ - 0xe4, SYNC_PORT, /* in $SYNC_PORT, %al */ - 0x0f, 0xaa, /* rsm */ -}; - -static inline void sync_with_host(uint64_t phase) -{ - asm volatile("in $" XSTR(SYNC_PORT)", %%al \n" - : "+a" (phase)); -} - -void self_smi(void) -{ - wrmsr(APIC_BASE_MSR + (APIC_ICR >> 4), - APIC_DEST_SELF | APIC_INT_ASSERT | APIC_DM_SMI); -} - -void guest_code(void *arg) -{ - uint64_t apicbase = rdmsr(MSR_IA32_APICBASE); - - sync_with_host(1); - - wrmsr(MSR_IA32_APICBASE, apicbase | X2APIC_ENABLE); - - sync_with_host(2); - - self_smi(); - - sync_with_host(4); - - if (arg) { - if (cpu_has_svm()) - generic_svm_setup(arg, NULL, NULL); - else - GUEST_ASSERT(prepare_for_vmx_operation(arg)); - - sync_with_host(5); - - self_smi(); - - sync_with_host(7); - } - - sync_with_host(DONE); -} - -int main(int argc, char *argv[]) -{ - vm_vaddr_t nested_gva = 0; - - struct kvm_regs regs; - struct kvm_vm *vm; - struct kvm_run *run; - struct kvm_x86_state *state; - int stage, stage_reported; - - /* Create VM */ - vm = vm_create_default(VCPU_ID, 0, guest_code); - - vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid()); - - run = vcpu_state(vm, VCPU_ID); - - vm_userspace_mem_region_add(vm, VM_MEM_SRC_ANONYMOUS, SMRAM_GPA, - SMRAM_MEMSLOT, SMRAM_PAGES, 0); - TEST_ASSERT(vm_phy_pages_alloc(vm, SMRAM_PAGES, SMRAM_GPA, SMRAM_MEMSLOT) - == SMRAM_GPA, "could not allocate guest physical addresses?"); - - memset(addr_gpa2hva(vm, SMRAM_GPA), 0x0, SMRAM_SIZE); - memcpy(addr_gpa2hva(vm, SMRAM_GPA) + 0x8000, smi_handler, - sizeof(smi_handler)); - - vcpu_set_msr(vm, VCPU_ID, MSR_IA32_SMBASE, SMRAM_GPA); - - if (kvm_check_cap(KVM_CAP_NESTED_STATE)) { - if (nested_svm_supported()) - vcpu_alloc_svm(vm, &nested_gva); - else if (nested_vmx_supported()) - vcpu_alloc_vmx(vm, &nested_gva); - } - - if (!nested_gva) - pr_info("will skip SMM test with VMX enabled\n"); - - vcpu_args_set(vm, VCPU_ID, 1, nested_gva); - - for (stage = 1;; stage++) { - _vcpu_run(vm, VCPU_ID); - 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)); - - memset(®s, 0, sizeof(regs)); - vcpu_regs_get(vm, VCPU_ID, ®s); - - stage_reported = regs.rax & 0xff; - - if (stage_reported == DONE) - goto done; - - TEST_ASSERT(stage_reported == stage || - stage_reported == SMRAM_STAGE, - "Unexpected stage: #%x, got %x", - stage, stage_reported); - - state = vcpu_save_state(vm, VCPU_ID); - kvm_vm_release(vm); - kvm_vm_restart(vm, O_RDWR); - vm_vcpu_add(vm, VCPU_ID); - vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid()); - vcpu_load_state(vm, VCPU_ID, state); - run = vcpu_state(vm, VCPU_ID); - free(state); - } - -done: - kvm_vm_free(vm); -} |