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Commit 18178ff8 authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Paolo Bonzini
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KVM: selftests: add Enlightened VMCS test 

Modify test library and add eVMCS test. This includes nVMX save/restore
testing.
Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent c939989d
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Showing with 1323 additions and 12 deletions
tools/testing/selftests/kvm/Makefile
View file @ 18178ff8
......@@ -13,6 +13,7 @@ TEST_GEN_PROGS_x86_64 += x86_64/sync_regs_test
TEST_GEN_PROGS_x86_64 += x86_64/vmx_tsc_adjust_test
TEST_GEN_PROGS_x86_64 += x86_64/cr4_cpuid_sync_test
TEST_GEN_PROGS_x86_64 += x86_64/state_test
TEST_GEN_PROGS_x86_64 += x86_64/evmcs_test
TEST_GEN_PROGS_x86_64 += dirty_log_test
TEST_GEN_PROGS_aarch64 += dirty_log_test
......
tools/testing/selftests/kvm/include/evmcs.h 0 → 100644
View file @ 18178ff8
/* SPDX-License-Identifier: GPL-2.0 */
/*
* tools/testing/selftests/kvm/include/vmx.h
*
* Copyright (C) 2018, Red Hat, Inc.
*
*/
#ifndef SELFTEST_KVM_EVMCS_H
#define SELFTEST_KVM_EVMCS_H
#include <stdint.h>
#include "vmx.h"
#define u16 uint16_t
#define u32 uint32_t
#define u64 uint64_t
extern bool enable_evmcs;
struct hv_vp_assist_page {
__u32 apic_assist;
__u32 reserved;
__u64 vtl_control[2];
__u64 nested_enlightenments_control[2];
__u32 enlighten_vmentry;
__u64 current_nested_vmcs;
};
struct hv_enlightened_vmcs {
u32 revision_id;
u32 abort;
u16 host_es_selector;
u16 host_cs_selector;
u16 host_ss_selector;
u16 host_ds_selector;
u16 host_fs_selector;
u16 host_gs_selector;
u16 host_tr_selector;
u64 host_ia32_pat;
u64 host_ia32_efer;
u64 host_cr0;
u64 host_cr3;
u64 host_cr4;
u64 host_ia32_sysenter_esp;
u64 host_ia32_sysenter_eip;
u64 host_rip;
u32 host_ia32_sysenter_cs;
u32 pin_based_vm_exec_control;
u32 vm_exit_controls;
u32 secondary_vm_exec_control;
u64 io_bitmap_a;
u64 io_bitmap_b;
u64 msr_bitmap;
u16 guest_es_selector;
u16 guest_cs_selector;
u16 guest_ss_selector;
u16 guest_ds_selector;
u16 guest_fs_selector;
u16 guest_gs_selector;
u16 guest_ldtr_selector;
u16 guest_tr_selector;
u32 guest_es_limit;
u32 guest_cs_limit;
u32 guest_ss_limit;
u32 guest_ds_limit;
u32 guest_fs_limit;
u32 guest_gs_limit;
u32 guest_ldtr_limit;
u32 guest_tr_limit;
u32 guest_gdtr_limit;
u32 guest_idtr_limit;
u32 guest_es_ar_bytes;
u32 guest_cs_ar_bytes;
u32 guest_ss_ar_bytes;
u32 guest_ds_ar_bytes;
u32 guest_fs_ar_bytes;
u32 guest_gs_ar_bytes;
u32 guest_ldtr_ar_bytes;
u32 guest_tr_ar_bytes;
u64 guest_es_base;
u64 guest_cs_base;
u64 guest_ss_base;
u64 guest_ds_base;
u64 guest_fs_base;
u64 guest_gs_base;
u64 guest_ldtr_base;
u64 guest_tr_base;
u64 guest_gdtr_base;
u64 guest_idtr_base;
u64 padding64_1[3];
u64 vm_exit_msr_store_addr;
u64 vm_exit_msr_load_addr;
u64 vm_entry_msr_load_addr;
u64 cr3_target_value0;
u64 cr3_target_value1;
u64 cr3_target_value2;
u64 cr3_target_value3;
u32 page_fault_error_code_mask;
u32 page_fault_error_code_match;
u32 cr3_target_count;
u32 vm_exit_msr_store_count;
u32 vm_exit_msr_load_count;
u32 vm_entry_msr_load_count;
u64 tsc_offset;
u64 virtual_apic_page_addr;
u64 vmcs_link_pointer;
u64 guest_ia32_debugctl;
u64 guest_ia32_pat;
u64 guest_ia32_efer;
u64 guest_pdptr0;
u64 guest_pdptr1;
u64 guest_pdptr2;
u64 guest_pdptr3;
u64 guest_pending_dbg_exceptions;
u64 guest_sysenter_esp;
u64 guest_sysenter_eip;
u32 guest_activity_state;
u32 guest_sysenter_cs;
u64 cr0_guest_host_mask;
u64 cr4_guest_host_mask;
u64 cr0_read_shadow;
u64 cr4_read_shadow;
u64 guest_cr0;
u64 guest_cr3;
u64 guest_cr4;
u64 guest_dr7;
u64 host_fs_base;
u64 host_gs_base;
u64 host_tr_base;
u64 host_gdtr_base;
u64 host_idtr_base;
u64 host_rsp;
u64 ept_pointer;
u16 virtual_processor_id;
u16 padding16[3];
u64 padding64_2[5];
u64 guest_physical_address;
u32 vm_instruction_error;
u32 vm_exit_reason;
u32 vm_exit_intr_info;
u32 vm_exit_intr_error_code;
u32 idt_vectoring_info_field;
u32 idt_vectoring_error_code;
u32 vm_exit_instruction_len;
u32 vmx_instruction_info;
u64 exit_qualification;
u64 exit_io_instruction_ecx;
u64 exit_io_instruction_esi;
u64 exit_io_instruction_edi;
u64 exit_io_instruction_eip;
u64 guest_linear_address;
u64 guest_rsp;
u64 guest_rflags;
u32 guest_interruptibility_info;
u32 cpu_based_vm_exec_control;
u32 exception_bitmap;
u32 vm_entry_controls;
u32 vm_entry_intr_info_field;
u32 vm_entry_exception_error_code;
u32 vm_entry_instruction_len;
u32 tpr_threshold;
u64 guest_rip;
u32 hv_clean_fields;
u32 hv_padding_32;
u32 hv_synthetic_controls;
struct {
u32 nested_flush_hypercall:1;
u32 msr_bitmap:1;
u32 reserved:30;
} hv_enlightenments_control;
u32 hv_vp_id;
u64 hv_vm_id;
u64 partition_assist_page;
u64 padding64_4[4];
u64 guest_bndcfgs;
u64 padding64_5[7];
u64 xss_exit_bitmap;
u64 padding64_6[7];
};
#define HV_X64_MSR_VP_ASSIST_PAGE 0x40000073
#define HV_X64_MSR_VP_ASSIST_PAGE_ENABLE 0x00000001
#define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT 12
#define HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_MASK \
(~((1ull << HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_SHIFT) - 1))
struct hv_enlightened_vmcs *current_evmcs;
struct hv_vp_assist_page *current_vp_assist;
static inline int enable_vp_assist(uint64_t vp_assist_pa, void *vp_assist)
{
u64 val = (vp_assist_pa & HV_X64_MSR_VP_ASSIST_PAGE_ADDRESS_MASK) |
HV_X64_MSR_VP_ASSIST_PAGE_ENABLE;
wrmsr(HV_X64_MSR_VP_ASSIST_PAGE, val);
current_vp_assist = vp_assist;
enable_evmcs = true;
return 0;
}
static inline int evmcs_vmptrld(uint64_t vmcs_pa, void *vmcs)
{
current_vp_assist->current_nested_vmcs = vmcs_pa;
current_vp_assist->enlighten_vmentry = 1;
current_evmcs = vmcs;
return 0;
}
static inline int evmcs_vmptrst(uint64_t *value)
{
*value = current_vp_assist->current_nested_vmcs &
~HV_X64_MSR_VP_ASSIST_PAGE_ENABLE;
return 0;
}
static inline int evmcs_vmread(uint64_t encoding, uint64_t *value)
{
switch (encoding) {
case GUEST_RIP:
*value = current_evmcs->guest_rip;
break;
case GUEST_RSP:
*value = current_evmcs->guest_rsp;
break;
case GUEST_RFLAGS:
*value = current_evmcs->guest_rflags;
break;
case HOST_IA32_PAT:
*value = current_evmcs->host_ia32_pat;
break;
case HOST_IA32_EFER:
*value = current_evmcs->host_ia32_efer;
break;
case HOST_CR0:
*value = current_evmcs->host_cr0;
break;
case HOST_CR3:
*value = current_evmcs->host_cr3;
break;
case HOST_CR4:
*value = current_evmcs->host_cr4;
break;
case HOST_IA32_SYSENTER_ESP:
*value = current_evmcs->host_ia32_sysenter_esp;
break;
case HOST_IA32_SYSENTER_EIP:
*value = current_evmcs->host_ia32_sysenter_eip;
break;
case HOST_RIP:
*value = current_evmcs->host_rip;
break;
case IO_BITMAP_A:
*value = current_evmcs->io_bitmap_a;
break;
case IO_BITMAP_B:
*value = current_evmcs->io_bitmap_b;
break;
case MSR_BITMAP:
*value = current_evmcs->msr_bitmap;
break;
case GUEST_ES_BASE:
*value = current_evmcs->guest_es_base;
break;
case GUEST_CS_BASE:
*value = current_evmcs->guest_cs_base;
break;
case GUEST_SS_BASE:
*value = current_evmcs->guest_ss_base;
break;
case GUEST_DS_BASE:
*value = current_evmcs->guest_ds_base;
break;
case GUEST_FS_BASE:
*value = current_evmcs->guest_fs_base;
break;
case GUEST_GS_BASE:
*value = current_evmcs->guest_gs_base;
break;
case GUEST_LDTR_BASE:
*value = current_evmcs->guest_ldtr_base;
break;
case GUEST_TR_BASE:
*value = current_evmcs->guest_tr_base;
break;
case GUEST_GDTR_BASE:
*value = current_evmcs->guest_gdtr_base;
break;
case GUEST_IDTR_BASE:
*value = current_evmcs->guest_idtr_base;
break;
case TSC_OFFSET:
*value = current_evmcs->tsc_offset;
break;
case VIRTUAL_APIC_PAGE_ADDR:
*value = current_evmcs->virtual_apic_page_addr;
break;
case VMCS_LINK_POINTER:
*value = current_evmcs->vmcs_link_pointer;
break;
case GUEST_IA32_DEBUGCTL:
*value = current_evmcs->guest_ia32_debugctl;
break;
case GUEST_IA32_PAT:
*value = current_evmcs->guest_ia32_pat;
break;
case GUEST_IA32_EFER:
*value = current_evmcs->guest_ia32_efer;
break;
case GUEST_PDPTR0:
*value = current_evmcs->guest_pdptr0;
break;
case GUEST_PDPTR1:
*value = current_evmcs->guest_pdptr1;
break;
case GUEST_PDPTR2:
*value = current_evmcs->guest_pdptr2;
break;
case GUEST_PDPTR3:
*value = current_evmcs->guest_pdptr3;
break;
case GUEST_PENDING_DBG_EXCEPTIONS:
*value = current_evmcs->guest_pending_dbg_exceptions;
break;
case GUEST_SYSENTER_ESP:
*value = current_evmcs->guest_sysenter_esp;
break;
case GUEST_SYSENTER_EIP:
*value = current_evmcs->guest_sysenter_eip;
break;
case CR0_GUEST_HOST_MASK:
*value = current_evmcs->cr0_guest_host_mask;
break;
case CR4_GUEST_HOST_MASK:
*value = current_evmcs->cr4_guest_host_mask;
break;
case CR0_READ_SHADOW:
*value = current_evmcs->cr0_read_shadow;
break;
case CR4_READ_SHADOW:
*value = current_evmcs->cr4_read_shadow;
break;
case GUEST_CR0:
*value = current_evmcs->guest_cr0;
break;
case GUEST_CR3:
*value = current_evmcs->guest_cr3;
break;
case GUEST_CR4:
*value = current_evmcs->guest_cr4;
break;
case GUEST_DR7:
*value = current_evmcs->guest_dr7;
break;
case HOST_FS_BASE:
*value = current_evmcs->host_fs_base;
break;
case HOST_GS_BASE:
*value = current_evmcs->host_gs_base;
break;
case HOST_TR_BASE:
*value = current_evmcs->host_tr_base;
break;
case HOST_GDTR_BASE:
*value = current_evmcs->host_gdtr_base;
break;
case HOST_IDTR_BASE:
*value = current_evmcs->host_idtr_base;
break;
case HOST_RSP:
*value = current_evmcs->host_rsp;
break;
case EPT_POINTER:
*value = current_evmcs->ept_pointer;
break;
case GUEST_BNDCFGS:
*value = current_evmcs->guest_bndcfgs;
break;
case XSS_EXIT_BITMAP:
*value = current_evmcs->xss_exit_bitmap;
break;
case GUEST_PHYSICAL_ADDRESS:
*value = current_evmcs->guest_physical_address;
break;
case EXIT_QUALIFICATION:
*value = current_evmcs->exit_qualification;
break;
case GUEST_LINEAR_ADDRESS:
*value = current_evmcs->guest_linear_address;
break;
case VM_EXIT_MSR_STORE_ADDR:
*value = current_evmcs->vm_exit_msr_store_addr;
break;
case VM_EXIT_MSR_LOAD_ADDR:
*value = current_evmcs->vm_exit_msr_load_addr;
break;
case VM_ENTRY_MSR_LOAD_ADDR:
*value = current_evmcs->vm_entry_msr_load_addr;
break;
case CR3_TARGET_VALUE0:
*value = current_evmcs->cr3_target_value0;
break;
case CR3_TARGET_VALUE1:
*value = current_evmcs->cr3_target_value1;
break;
case CR3_TARGET_VALUE2:
*value = current_evmcs->cr3_target_value2;
break;
case CR3_TARGET_VALUE3:
*value = current_evmcs->cr3_target_value3;
break;
case TPR_THRESHOLD:
*value = current_evmcs->tpr_threshold;
break;
case GUEST_INTERRUPTIBILITY_INFO:
*value = current_evmcs->guest_interruptibility_info;
break;
case CPU_BASED_VM_EXEC_CONTROL:
*value = current_evmcs->cpu_based_vm_exec_control;
break;
case EXCEPTION_BITMAP:
*value = current_evmcs->exception_bitmap;
break;
case VM_ENTRY_CONTROLS:
*value = current_evmcs->vm_entry_controls;
break;
case VM_ENTRY_INTR_INFO_FIELD:
*value = current_evmcs->vm_entry_intr_info_field;
break;
case VM_ENTRY_EXCEPTION_ERROR_CODE:
*value = current_evmcs->vm_entry_exception_error_code;
break;
case VM_ENTRY_INSTRUCTION_LEN:
*value = current_evmcs->vm_entry_instruction_len;
break;
case HOST_IA32_SYSENTER_CS:
*value = current_evmcs->host_ia32_sysenter_cs;
break;
case PIN_BASED_VM_EXEC_CONTROL:
*value = current_evmcs->pin_based_vm_exec_control;
break;
case VM_EXIT_CONTROLS:
*value = current_evmcs->vm_exit_controls;
break;
case SECONDARY_VM_EXEC_CONTROL:
*value = current_evmcs->secondary_vm_exec_control;
break;
case GUEST_ES_LIMIT:
*value = current_evmcs->guest_es_limit;
break;
case GUEST_CS_LIMIT:
*value = current_evmcs->guest_cs_limit;
break;
case GUEST_SS_LIMIT:
*value = current_evmcs->guest_ss_limit;
break;
case GUEST_DS_LIMIT:
*value = current_evmcs->guest_ds_limit;
break;
case GUEST_FS_LIMIT:
*value = current_evmcs->guest_fs_limit;
break;
case GUEST_GS_LIMIT:
*value = current_evmcs->guest_gs_limit;
break;
case GUEST_LDTR_LIMIT:
*value = current_evmcs->guest_ldtr_limit;
break;
case GUEST_TR_LIMIT:
*value = current_evmcs->guest_tr_limit;
break;
case GUEST_GDTR_LIMIT:
*value = current_evmcs->guest_gdtr_limit;
break;
case GUEST_IDTR_LIMIT:
*value = current_evmcs->guest_idtr_limit;
break;
case GUEST_ES_AR_BYTES:
*value = current_evmcs->guest_es_ar_bytes;
break;
case GUEST_CS_AR_BYTES:
*value = current_evmcs->guest_cs_ar_bytes;
break;
case GUEST_SS_AR_BYTES:
*value = current_evmcs->guest_ss_ar_bytes;
break;
case GUEST_DS_AR_BYTES:
*value = current_evmcs->guest_ds_ar_bytes;
break;
case GUEST_FS_AR_BYTES:
*value = current_evmcs->guest_fs_ar_bytes;
break;
case GUEST_GS_AR_BYTES:
*value = current_evmcs->guest_gs_ar_bytes;
break;
case GUEST_LDTR_AR_BYTES:
*value = current_evmcs->guest_ldtr_ar_bytes;
break;
case GUEST_TR_AR_BYTES:
*value = current_evmcs->guest_tr_ar_bytes;
break;
case GUEST_ACTIVITY_STATE:
*value = current_evmcs->guest_activity_state;
break;
case GUEST_SYSENTER_CS:
*value = current_evmcs->guest_sysenter_cs;
break;
case VM_INSTRUCTION_ERROR:
*value = current_evmcs->vm_instruction_error;
break;
case VM_EXIT_REASON:
*value = current_evmcs->vm_exit_reason;
break;
case VM_EXIT_INTR_INFO:
*value = current_evmcs->vm_exit_intr_info;
break;
case VM_EXIT_INTR_ERROR_CODE:
*value = current_evmcs->vm_exit_intr_error_code;
break;
case IDT_VECTORING_INFO_FIELD:
*value = current_evmcs->idt_vectoring_info_field;
break;
case IDT_VECTORING_ERROR_CODE:
*value = current_evmcs->idt_vectoring_error_code;
break;
case VM_EXIT_INSTRUCTION_LEN:
*value = current_evmcs->vm_exit_instruction_len;
break;
case VMX_INSTRUCTION_INFO:
*value = current_evmcs->vmx_instruction_info;
break;
case PAGE_FAULT_ERROR_CODE_MASK:
*value = current_evmcs->page_fault_error_code_mask;
break;
case PAGE_FAULT_ERROR_CODE_MATCH:
*value = current_evmcs->page_fault_error_code_match;
break;
case CR3_TARGET_COUNT:
*value = current_evmcs->cr3_target_count;
break;
case VM_EXIT_MSR_STORE_COUNT:
*value = current_evmcs->vm_exit_msr_store_count;
break;
case VM_EXIT_MSR_LOAD_COUNT:
*value = current_evmcs->vm_exit_msr_load_count;
break;
case VM_ENTRY_MSR_LOAD_COUNT:
*value = current_evmcs->vm_entry_msr_load_count;
break;
case HOST_ES_SELECTOR:
*value = current_evmcs->host_es_selector;
break;
case HOST_CS_SELECTOR:
*value = current_evmcs->host_cs_selector;
break;
case HOST_SS_SELECTOR:
*value = current_evmcs->host_ss_selector;
break;
case HOST_DS_SELECTOR:
*value = current_evmcs->host_ds_selector;
break;
case HOST_FS_SELECTOR:
*value = current_evmcs->host_fs_selector;
break;
case HOST_GS_SELECTOR:
*value = current_evmcs->host_gs_selector;
break;
case HOST_TR_SELECTOR:
*value = current_evmcs->host_tr_selector;
break;
case GUEST_ES_SELECTOR:
*value = current_evmcs->guest_es_selector;
break;
case GUEST_CS_SELECTOR:
*value = current_evmcs->guest_cs_selector;
break;
case GUEST_SS_SELECTOR:
*value = current_evmcs->guest_ss_selector;
break;
case GUEST_DS_SELECTOR:
*value = current_evmcs->guest_ds_selector;
break;
case GUEST_FS_SELECTOR:
*value = current_evmcs->guest_fs_selector;
break;
case GUEST_GS_SELECTOR:
*value = current_evmcs->guest_gs_selector;
break;
case GUEST_LDTR_SELECTOR:
*value = current_evmcs->guest_ldtr_selector;
break;
case GUEST_TR_SELECTOR:
*value = current_evmcs->guest_tr_selector;
break;
case VIRTUAL_PROCESSOR_ID:
*value = current_evmcs->virtual_processor_id;
break;
default: return 1;
}
return 0;
}
static inline int evmcs_vmwrite(uint64_t encoding, uint64_t value)
{
switch (encoding) {
case GUEST_RIP:
current_evmcs->guest_rip = value;
break;
case GUEST_RSP:
current_evmcs->guest_rsp = value;
break;
case GUEST_RFLAGS:
current_evmcs->guest_rflags = value;
break;
case HOST_IA32_PAT:
current_evmcs->host_ia32_pat = value;
break;
case HOST_IA32_EFER:
current_evmcs->host_ia32_efer = value;
break;
case HOST_CR0:
current_evmcs->host_cr0 = value;
break;
case HOST_CR3:
current_evmcs->host_cr3 = value;
break;
case HOST_CR4:
current_evmcs->host_cr4 = value;
break;
case HOST_IA32_SYSENTER_ESP:
current_evmcs->host_ia32_sysenter_esp = value;
break;
case HOST_IA32_SYSENTER_EIP:
current_evmcs->host_ia32_sysenter_eip = value;
break;
case HOST_RIP:
current_evmcs->host_rip = value;
break;
case IO_BITMAP_A:
current_evmcs->io_bitmap_a = value;
break;
case IO_BITMAP_B:
current_evmcs->io_bitmap_b = value;
break;
case MSR_BITMAP:
current_evmcs->msr_bitmap = value;
break;
case GUEST_ES_BASE:
current_evmcs->guest_es_base = value;
break;
case GUEST_CS_BASE:
current_evmcs->guest_cs_base = value;
break;
case GUEST_SS_BASE:
current_evmcs->guest_ss_base = value;
break;
case GUEST_DS_BASE:
current_evmcs->guest_ds_base = value;
break;
case GUEST_FS_BASE:
current_evmcs->guest_fs_base = value;
break;
case GUEST_GS_BASE:
current_evmcs->guest_gs_base = value;
break;
case GUEST_LDTR_BASE:
current_evmcs->guest_ldtr_base = value;
break;
case GUEST_TR_BASE:
current_evmcs->guest_tr_base = value;
break;
case GUEST_GDTR_BASE:
current_evmcs->guest_gdtr_base = value;
break;
case GUEST_IDTR_BASE:
current_evmcs->guest_idtr_base = value;
break;
case TSC_OFFSET:
current_evmcs->tsc_offset = value;
break;
case VIRTUAL_APIC_PAGE_ADDR:
current_evmcs->virtual_apic_page_addr = value;
break;
case VMCS_LINK_POINTER:
current_evmcs->vmcs_link_pointer = value;
break;
case GUEST_IA32_DEBUGCTL:
current_evmcs->guest_ia32_debugctl = value;
break;
case GUEST_IA32_PAT:
current_evmcs->guest_ia32_pat = value;
break;
case GUEST_IA32_EFER:
current_evmcs->guest_ia32_efer = value;
break;
case GUEST_PDPTR0:
current_evmcs->guest_pdptr0 = value;
break;
case GUEST_PDPTR1:
current_evmcs->guest_pdptr1 = value;
break;
case GUEST_PDPTR2:
current_evmcs->guest_pdptr2 = value;
break;
case GUEST_PDPTR3:
current_evmcs->guest_pdptr3 = value;
break;
case GUEST_PENDING_DBG_EXCEPTIONS:
current_evmcs->guest_pending_dbg_exceptions = value;
break;
case GUEST_SYSENTER_ESP:
current_evmcs->guest_sysenter_esp = value;
break;
case GUEST_SYSENTER_EIP:
current_evmcs->guest_sysenter_eip = value;
break;
case CR0_GUEST_HOST_MASK:
current_evmcs->cr0_guest_host_mask = value;
break;
case CR4_GUEST_HOST_MASK:
current_evmcs->cr4_guest_host_mask = value;
break;
case CR0_READ_SHADOW:
current_evmcs->cr0_read_shadow = value;
break;
case CR4_READ_SHADOW:
current_evmcs->cr4_read_shadow = value;
break;
case GUEST_CR0:
current_evmcs->guest_cr0 = value;
break;
case GUEST_CR3:
current_evmcs->guest_cr3 = value;
break;
case GUEST_CR4:
current_evmcs->guest_cr4 = value;
break;
case GUEST_DR7:
current_evmcs->guest_dr7 = value;
break;
case HOST_FS_BASE:
current_evmcs->host_fs_base = value;
break;
case HOST_GS_BASE:
current_evmcs->host_gs_base = value;
break;
case HOST_TR_BASE:
current_evmcs->host_tr_base = value;
break;
case HOST_GDTR_BASE:
current_evmcs->host_gdtr_base = value;
break;
case HOST_IDTR_BASE:
current_evmcs->host_idtr_base = value;
break;
case HOST_RSP:
current_evmcs->host_rsp = value;
break;
case EPT_POINTER:
current_evmcs->ept_pointer = value;
break;
case GUEST_BNDCFGS:
current_evmcs->guest_bndcfgs = value;
break;
case XSS_EXIT_BITMAP:
current_evmcs->xss_exit_bitmap = value;
break;
case GUEST_PHYSICAL_ADDRESS:
current_evmcs->guest_physical_address = value;
break;
case EXIT_QUALIFICATION:
current_evmcs->exit_qualification = value;
break;
case GUEST_LINEAR_ADDRESS:
current_evmcs->guest_linear_address = value;
break;
case VM_EXIT_MSR_STORE_ADDR:
current_evmcs->vm_exit_msr_store_addr = value;
break;
case VM_EXIT_MSR_LOAD_ADDR:
current_evmcs->vm_exit_msr_load_addr = value;
break;
case VM_ENTRY_MSR_LOAD_ADDR:
current_evmcs->vm_entry_msr_load_addr = value;
break;
case CR3_TARGET_VALUE0:
current_evmcs->cr3_target_value0 = value;
break;
case CR3_TARGET_VALUE1:
current_evmcs->cr3_target_value1 = value;
break;
case CR3_TARGET_VALUE2:
current_evmcs->cr3_target_value2 = value;
break;
case CR3_TARGET_VALUE3:
current_evmcs->cr3_target_value3 = value;
break;
case TPR_THRESHOLD:
current_evmcs->tpr_threshold = value;
break;
case GUEST_INTERRUPTIBILITY_INFO:
current_evmcs->guest_interruptibility_info = value;
break;
case CPU_BASED_VM_EXEC_CONTROL:
current_evmcs->cpu_based_vm_exec_control = value;
break;
case EXCEPTION_BITMAP:
current_evmcs->exception_bitmap = value;
break;
case VM_ENTRY_CONTROLS:
current_evmcs->vm_entry_controls = value;
break;
case VM_ENTRY_INTR_INFO_FIELD:
current_evmcs->vm_entry_intr_info_field = value;
break;
case VM_ENTRY_EXCEPTION_ERROR_CODE:
current_evmcs->vm_entry_exception_error_code = value;
break;
case VM_ENTRY_INSTRUCTION_LEN:
current_evmcs->vm_entry_instruction_len = value;
break;
case HOST_IA32_SYSENTER_CS:
current_evmcs->host_ia32_sysenter_cs = value;
break;
case PIN_BASED_VM_EXEC_CONTROL:
current_evmcs->pin_based_vm_exec_control = value;
break;
case VM_EXIT_CONTROLS:
current_evmcs->vm_exit_controls = value;
break;
case SECONDARY_VM_EXEC_CONTROL:
current_evmcs->secondary_vm_exec_control = value;
break;
case GUEST_ES_LIMIT:
current_evmcs->guest_es_limit = value;
break;
case GUEST_CS_LIMIT:
current_evmcs->guest_cs_limit = value;
break;
case GUEST_SS_LIMIT:
current_evmcs->guest_ss_limit = value;
break;
case GUEST_DS_LIMIT:
current_evmcs->guest_ds_limit = value;
break;
case GUEST_FS_LIMIT:
current_evmcs->guest_fs_limit = value;
break;
case GUEST_GS_LIMIT:
current_evmcs->guest_gs_limit = value;
break;
case GUEST_LDTR_LIMIT:
current_evmcs->guest_ldtr_limit = value;
break;
case GUEST_TR_LIMIT:
current_evmcs->guest_tr_limit = value;
break;
case GUEST_GDTR_LIMIT:
current_evmcs->guest_gdtr_limit = value;
break;
case GUEST_IDTR_LIMIT:
current_evmcs->guest_idtr_limit = value;
break;
case GUEST_ES_AR_BYTES:
current_evmcs->guest_es_ar_bytes = value;
break;
case GUEST_CS_AR_BYTES:
current_evmcs->guest_cs_ar_bytes = value;
break;
case GUEST_SS_AR_BYTES:
current_evmcs->guest_ss_ar_bytes = value;
break;
case GUEST_DS_AR_BYTES:
current_evmcs->guest_ds_ar_bytes = value;
break;
case GUEST_FS_AR_BYTES:
current_evmcs->guest_fs_ar_bytes = value;
break;
case GUEST_GS_AR_BYTES:
current_evmcs->guest_gs_ar_bytes = value;
break;
case GUEST_LDTR_AR_BYTES:
current_evmcs->guest_ldtr_ar_bytes = value;
break;
case GUEST_TR_AR_BYTES:
current_evmcs->guest_tr_ar_bytes = value;
break;
case GUEST_ACTIVITY_STATE:
current_evmcs->guest_activity_state = value;
break;
case GUEST_SYSENTER_CS:
current_evmcs->guest_sysenter_cs = value;
break;
case VM_INSTRUCTION_ERROR:
current_evmcs->vm_instruction_error = value;
break;
case VM_EXIT_REASON:
current_evmcs->vm_exit_reason = value;
break;
case VM_EXIT_INTR_INFO:
current_evmcs->vm_exit_intr_info = value;
break;
case VM_EXIT_INTR_ERROR_CODE:
current_evmcs->vm_exit_intr_error_code = value;
break;
case IDT_VECTORING_INFO_FIELD:
current_evmcs->idt_vectoring_info_field = value;
break;
case IDT_VECTORING_ERROR_CODE:
current_evmcs->idt_vectoring_error_code = value;
break;
case VM_EXIT_INSTRUCTION_LEN:
current_evmcs->vm_exit_instruction_len = value;
break;
case VMX_INSTRUCTION_INFO:
current_evmcs->vmx_instruction_info = value;
break;
case PAGE_FAULT_ERROR_CODE_MASK:
current_evmcs->page_fault_error_code_mask = value;
break;
case PAGE_FAULT_ERROR_CODE_MATCH:
current_evmcs->page_fault_error_code_match = value;
break;
case CR3_TARGET_COUNT:
current_evmcs->cr3_target_count = value;
break;
case VM_EXIT_MSR_STORE_COUNT:
current_evmcs->vm_exit_msr_store_count = value;
break;
case VM_EXIT_MSR_LOAD_COUNT:
current_evmcs->vm_exit_msr_load_count = value;
break;
case VM_ENTRY_MSR_LOAD_COUNT:
current_evmcs->vm_entry_msr_load_count = value;
break;
case HOST_ES_SELECTOR:
current_evmcs->host_es_selector = value;
break;
case HOST_CS_SELECTOR:
current_evmcs->host_cs_selector = value;
break;
case HOST_SS_SELECTOR:
current_evmcs->host_ss_selector = value;
break;
case HOST_DS_SELECTOR:
current_evmcs->host_ds_selector = value;
break;
case HOST_FS_SELECTOR:
current_evmcs->host_fs_selector = value;
break;
case HOST_GS_SELECTOR:
current_evmcs->host_gs_selector = value;
break;
case HOST_TR_SELECTOR:
current_evmcs->host_tr_selector = value;
break;
case GUEST_ES_SELECTOR:
current_evmcs->guest_es_selector = value;
break;
case GUEST_CS_SELECTOR:
current_evmcs->guest_cs_selector = value;
break;
case GUEST_SS_SELECTOR:
current_evmcs->guest_ss_selector = value;
break;
case GUEST_DS_SELECTOR:
current_evmcs->guest_ds_selector = value;
break;
case GUEST_FS_SELECTOR:
current_evmcs->guest_fs_selector = value;
break;
case GUEST_GS_SELECTOR:
current_evmcs->guest_gs_selector = value;
break;
case GUEST_LDTR_SELECTOR:
current_evmcs->guest_ldtr_selector = value;
break;
case GUEST_TR_SELECTOR:
current_evmcs->guest_tr_selector = value;
break;
case VIRTUAL_PROCESSOR_ID:
current_evmcs->virtual_processor_id = value;
break;
default: return 1;
}
return 0;
}
static inline int evmcs_vmlaunch(void)
{
int ret;
current_evmcs->hv_clean_fields = 0;
__asm__ __volatile__("push %%rbp;"
"push %%rcx;"
"push %%rdx;"
"push %%rsi;"
"push %%rdi;"
"push $0;"
"mov %%rsp, (%[host_rsp]);"
"lea 1f(%%rip), %%rax;"
"mov %%rax, (%[host_rip]);"
"vmlaunch;"
"incq (%%rsp);"
"1: pop %%rax;"
"pop %%rdi;"
"pop %%rsi;"
"pop %%rdx;"
"pop %%rcx;"
"pop %%rbp;"
: [ret]"=&a"(ret)
: [host_rsp]"r"
((uint64_t)&current_evmcs->host_rsp),
[host_rip]"r"
((uint64_t)&current_evmcs->host_rip)
: "memory", "cc", "rbx", "r8", "r9", "r10",
"r11", "r12", "r13", "r14", "r15");
return ret;
}
/*
* No guest state (e.g. GPRs) is established by this vmresume.
*/
static inline int evmcs_vmresume(void)
{
int ret;
current_evmcs->hv_clean_fields = 0;
__asm__ __volatile__("push %%rbp;"
"push %%rcx;"
"push %%rdx;"
"push %%rsi;"
"push %%rdi;"
"push $0;"
"mov %%rsp, (%[host_rsp]);"
"lea 1f(%%rip), %%rax;"
"mov %%rax, (%[host_rip]);"
"vmresume;"
"incq (%%rsp);"
"1: pop %%rax;"
"pop %%rdi;"
"pop %%rsi;"
"pop %%rdx;"
"pop %%rcx;"
"pop %%rbp;"
: [ret]"=&a"(ret)
: [host_rsp]"r"
((uint64_t)&current_evmcs->host_rsp),
[host_rip]"r"
((uint64_t)&current_evmcs->host_rip)
: "memory", "cc", "rbx", "r8", "r9", "r10",
"r11", "r12", "r13", "r14", "r15");
return ret;
}
#endif /* !SELFTEST_KVM_EVMCS_H */
tools/testing/selftests/kvm/include/x86_64/vmx.h
View file @ 18178ff8
......@@ -339,6 +339,8 @@ struct vmx_msr_entry {
uint64_t value;
} __attribute__ ((aligned(16)));
#include "evmcs.h"
static inline int vmxon(uint64_t phys)
{
uint8_t ret;
......@@ -372,6 +374,9 @@ static inline int vmptrld(uint64_t vmcs_pa)
{
uint8_t ret;
if (enable_evmcs)
return -1;
__asm__ __volatile__ ("vmptrld %[pa]; setna %[ret]"
: [ret]"=rm"(ret)
: [pa]"m"(vmcs_pa)
......@@ -385,6 +390,9 @@ static inline int vmptrst(uint64_t *value)
uint64_t tmp;
uint8_t ret;
if (enable_evmcs)
return evmcs_vmptrst(value);
__asm__ __volatile__("vmptrst %[value]; setna %[ret]"
: [value]"=m"(tmp), [ret]"=rm"(ret)
: : "cc", "memory");
......@@ -411,6 +419,9 @@ static inline int vmlaunch(void)
{
int ret;
if (enable_evmcs)
return evmcs_vmlaunch();
__asm__ __volatile__("push %%rbp;"
"push %%rcx;"
"push %%rdx;"
......@@ -443,6 +454,9 @@ static inline int vmresume(void)
{
int ret;
if (enable_evmcs)
return evmcs_vmresume();
__asm__ __volatile__("push %%rbp;"
"push %%rcx;"
"push %%rdx;"
......@@ -482,6 +496,9 @@ static inline int vmread(uint64_t encoding, uint64_t *value)
uint64_t tmp;
uint8_t ret;
if (enable_evmcs)
return evmcs_vmread(encoding, value);
__asm__ __volatile__("vmread %[encoding], %[value]; setna %[ret]"
: [value]"=rm"(tmp), [ret]"=rm"(ret)
: [encoding]"r"(encoding)
......@@ -506,6 +523,9 @@ static inline int vmwrite(uint64_t encoding, uint64_t value)
{
uint8_t ret;
if (enable_evmcs)
return evmcs_vmwrite(encoding, value);
__asm__ __volatile__ ("vmwrite %[value], %[encoding]; setna %[ret]"
: [ret]"=rm"(ret)
: [value]"rm"(value), [encoding]"r"(encoding)
......@@ -543,6 +563,14 @@ struct vmx_pages {
void *vmwrite_hva;
uint64_t vmwrite_gpa;
void *vmwrite;
void *vp_assist_hva;
uint64_t vp_assist_gpa;
void *vp_assist;
void *enlightened_vmcs_hva;
uint64_t enlightened_vmcs_gpa;
void *enlightened_vmcs;
};
struct vmx_pages *vcpu_alloc_vmx(struct kvm_vm *vm, vm_vaddr_t *p_vmx_gva);
......
tools/testing/selftests/kvm/lib/x86_64/vmx.c
View file @ 18178ff8
......@@ -13,6 +13,8 @@
#include "processor.h"
#include "vmx.h"
bool enable_evmcs;
/* Allocate memory regions for nested VMX tests.
*
* Input Args:
......@@ -62,6 +64,20 @@ vcpu_alloc_vmx(struct kvm_vm *vm, vm_vaddr_t *p_vmx_gva)
vmx->vmwrite_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->vmwrite);
memset(vmx->vmwrite_hva, 0, getpagesize());
/* Setup of a region of guest memory for the VP Assist page. */
vmx->vp_assist = (void *)vm_vaddr_alloc(vm, getpagesize(),
0x10000, 0, 0);
vmx->vp_assist_hva = addr_gva2hva(vm, (uintptr_t)vmx->vp_assist);
vmx->vp_assist_gpa = addr_gva2gpa(vm, (uintptr_t)vmx->vp_assist);
/* Setup of a region of guest memory for the enlightened VMCS. */
vmx->enlightened_vmcs = (void *)vm_vaddr_alloc(vm, getpagesize(),
0x10000, 0, 0);
vmx->enlightened_vmcs_hva =
addr_gva2hva(vm, (uintptr_t)vmx->enlightened_vmcs);
vmx->enlightened_vmcs_gpa =
addr_gva2gpa(vm, (uintptr_t)vmx->enlightened_vmcs);
*p_vmx_gva = vmx_gva;
return vmx;
}
......@@ -112,6 +128,7 @@ bool prepare_for_vmx_operation(struct vmx_pages *vmx)
bool load_vmcs(struct vmx_pages *vmx)
{
if (!enable_evmcs) {
/* Load a VMCS. */
*(uint32_t *)(vmx->vmcs) = vmcs_revision();
if (vmclear(vmx->vmcs_gpa))
......@@ -121,9 +138,16 @@ bool load_vmcs(struct vmx_pages *vmx)
return false;
/* Setup shadow VMCS, do not load it yet. */
*(uint32_t *)(vmx->shadow_vmcs) = vmcs_revision() | 0x80000000ul;
*(uint32_t *)(vmx->shadow_vmcs) =
vmcs_revision() | 0x80000000ul;
if (vmclear(vmx->shadow_vmcs_gpa))
return false;
} else {
if (evmcs_vmptrld(vmx->enlightened_vmcs_gpa,
vmx->enlightened_vmcs))
return false;
current_evmcs->revision_id = vmcs_revision();
}
return true;
}
......
tools/testing/selftests/kvm/x86_64/evmcs_test.c 0 → 100644
View file @ 18178ff8
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018, Red Hat, Inc.
*
* Tests for Enlightened VMCS, 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 "vmx.h"
#define VCPU_ID 5
static bool have_nested_state;
void l2_guest_code(void)
{
GUEST_SYNC(6);
GUEST_SYNC(7);
/* Done, exit to L1 and never come back. */
vmcall();
}
void l1_guest_code(struct vmx_pages *vmx_pages)
{
#define L2_GUEST_STACK_SIZE 64
unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];
enable_vp_assist(vmx_pages->vp_assist_gpa, vmx_pages->vp_assist);
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->enlightened_vmcs_gpa);
GUEST_SYNC(4);
GUEST_ASSERT(vmptrstz() == vmx_pages->enlightened_vmcs_gpa);
prepare_vmcs(vmx_pages, l2_guest_code,
&l2_guest_stack[L2_GUEST_STACK_SIZE]);
GUEST_SYNC(5);
GUEST_ASSERT(vmptrstz() == vmx_pages->enlightened_vmcs_gpa);
GUEST_ASSERT(!vmlaunch());
GUEST_ASSERT(vmptrstz() == vmx_pages->enlightened_vmcs_gpa);
GUEST_SYNC(8);
GUEST_ASSERT(!vmresume());
GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL);
GUEST_SYNC(9);
}
void guest_code(struct vmx_pages *vmx_pages)
{
GUEST_SYNC(1);
GUEST_SYNC(2);
if (vmx_pages)
l1_guest_code(vmx_pages);
GUEST_DONE();
}
int main(int argc, char *argv[])
{
struct vmx_pages *vmx_pages = NULL;
vm_vaddr_t vmx_pages_gva = 0;
struct kvm_regs regs1, regs2;
struct kvm_vm *vm;
struct kvm_run *run;
struct kvm_x86_state *state;
struct ucall uc;
int stage;
uint16_t evmcs_ver;
struct kvm_enable_cap enable_evmcs_cap = {
.cap = KVM_CAP_HYPERV_ENLIGHTENED_VMCS,
.args[0] = (unsigned long)&evmcs_ver
};
struct kvm_cpuid_entry2 *entry = kvm_get_supported_cpuid_entry(1);
/* Create VM */
vm = vm_create_default(VCPU_ID, 0, guest_code);
vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
if (!kvm_check_cap(KVM_CAP_NESTED_STATE) ||
!kvm_check_cap(KVM_CAP_HYPERV_ENLIGHTENED_VMCS)) {
printf("capabilities not available, skipping test\n");
exit(KSFT_SKIP);
}
vcpu_ioctl(vm, VCPU_ID, KVM_ENABLE_CAP, &enable_evmcs_cap);
run = vcpu_state(vm, VCPU_ID);
vcpu_regs_get(vm, VCPU_ID, &regs1);
vmx_pages = vcpu_alloc_vmx(vm, &vmx_pages_gva);
vcpu_args_set(vm, VCPU_ID, 1, vmx_pages_gva);
for (stage = 1;; stage++) {
_vcpu_run(vm, VCPU_ID);
TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
"Unexpected exit reason: %u (%s),\n",
run->exit_reason,
exit_reason_str(run->exit_reason));
memset(&regs1, 0, sizeof(regs1));
vcpu_regs_get(vm, VCPU_ID, &regs1);
switch (get_ucall(vm, VCPU_ID, &uc)) {
case UCALL_ABORT:
TEST_ASSERT(false, "%s at %s:%d", (const char *)uc.args[0],
__FILE__, uc.args[1]);
/* NOT REACHED */
case UCALL_SYNC:
break;
case UCALL_DONE:
goto done;
default:
TEST_ASSERT(false, "Unknown ucall 0x%x.", uc.cmd);
}
/* UCALL_SYNC is handled here. */
TEST_ASSERT(!strcmp((const char *)uc.args[0], "hello") &&
uc.args[1] == stage, "Unexpected register values vmexit #%lx, got %lx",
stage, (ulong)uc.args[1]);
state = vcpu_save_state(vm, VCPU_ID);
kvm_vm_release(vm);
/* Restore state in a new VM. */
kvm_vm_restart(vm, O_RDWR);
vm_vcpu_add(vm, VCPU_ID, 0, 0);
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);
memset(&regs2, 0, sizeof(regs2));
vcpu_regs_get(vm, VCPU_ID, &regs2);
TEST_ASSERT(!memcmp(&regs1, &regs2, sizeof(regs2)),
"Unexpected register values after vcpu_load_state; rdi: %lx rsi: %lx",
(ulong) regs2.rdi, (ulong) regs2.rsi);
}
done:
kvm_vm_free(vm);
}
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