return vmx->vcpu.arch.efer & ~(EFER_LMA | EFER_LME);
}
-static void prepare_vmcs02_full(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12)
+static void prepare_vmcs02_constant_state(struct vcpu_vmx *vmx)
{
- struct vcpu_vmx *vmx = to_vmx(vcpu);
+ /*
+ * If we have never launched vmcs02, set the constant vmcs02 state
+ * according to L0's settings (vmcs12 is irrelevant here). Host
+ * fields that come from L0 and are not constant, e.g. HOST_CR3,
+ * will be set as needed prior to VMLAUNCH/VMRESUME.
+ */
+ if (vmx->nested.vmcs02.launched)
+ return;
+
+ /* All VMFUNCs are currently emulated through L0 vmexits. */
+ if (cpu_has_vmx_vmfunc())
+ vmcs_write64(VM_FUNCTION_CONTROL, 0);
+
+ if (cpu_has_vmx_posted_intr())
+ vmcs_write16(POSTED_INTR_NV, POSTED_INTR_NESTED_VECTOR);
+
+ if (cpu_has_vmx_msr_bitmap())
+ vmcs_write64(MSR_BITMAP, __pa(vmx->nested.vmcs02.msr_bitmap));
+
+ if (enable_pml)
+ vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
+
+ /*
+ * Set the MSR load/store lists to match L0's settings. Only the
+ * addresses are constant (for vmcs02), the counts can change based
+ * on L2's behavior, e.g. switching to/from long mode.
+ */
+ vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
+ vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
+ vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
+
+ vmx_set_constant_host_state(vmx);
+}
+
+static void prepare_vmcs02_early_full(struct vcpu_vmx *vmx,
+ struct vmcs12 *vmcs12)
+{
+ prepare_vmcs02_constant_state(vmx);
+
+ vmcs_write64(VMCS_LINK_POINTER, -1ull);
+
+ if (enable_vpid) {
+ if (nested_cpu_has_vpid(vmcs12) && vmx->nested.vpid02)
+ vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->nested.vpid02);
+ else
+ vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
+ }
+}
+
+static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
+{
+ u32 exec_control, vmcs12_exec_ctrl;
+ u64 guest_efer = nested_vmx_calc_efer(vmx, vmcs12);
+
+ if (vmx->nested.dirty_vmcs12)
+ prepare_vmcs02_early_full(vmx, vmcs12);
+
+ /*
+ * HOST_RSP is normally set correctly in vmx_vcpu_run() just before
+ * entry, but only if the current (host) sp changed from the value
+ * we wrote last (vmx->host_rsp). This cache is no longer relevant
+ * if we switch vmcs, and rather than hold a separate cache per vmcs,
+ * here we just force the write to happen on entry.
+ */
+ vmx->host_rsp = 0;
+
+ /*
+ * PIN CONTROLS
+ */
+ exec_control = vmcs12->pin_based_vm_exec_control;
+
+ /* Preemption timer setting is computed directly in vmx_vcpu_run. */
+ exec_control |= vmcs_config.pin_based_exec_ctrl;
+ exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
+ vmx->loaded_vmcs->hv_timer_armed = false;
+
+ /* Posted interrupts setting is only taken from vmcs12. */
+ if (nested_cpu_has_posted_intr(vmcs12)) {
+ vmx->nested.posted_intr_nv = vmcs12->posted_intr_nv;
+ vmx->nested.pi_pending = false;
+ } else {
+ exec_control &= ~PIN_BASED_POSTED_INTR;
+ }
+ vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, exec_control);
+
+ /*
+ * EXEC CONTROLS
+ */
+ exec_control = vmx_exec_control(vmx); /* L0's desires */
+ exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
+ exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING;
+ exec_control &= ~CPU_BASED_TPR_SHADOW;
+ exec_control |= vmcs12->cpu_based_vm_exec_control;
+
+ /*
+ * Write an illegal value to VIRTUAL_APIC_PAGE_ADDR. Later, if
+ * nested_get_vmcs12_pages can't fix it up, the illegal value
+ * will result in a VM entry failure.
+ */
+ if (exec_control & CPU_BASED_TPR_SHADOW) {
+ vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, -1ull);
+ vmcs_write32(TPR_THRESHOLD, vmcs12->tpr_threshold);
+ } else {
+#ifdef CONFIG_X86_64
+ exec_control |= CPU_BASED_CR8_LOAD_EXITING |
+ CPU_BASED_CR8_STORE_EXITING;
+#endif
+ }
+
+ /*
+ * A vmexit (to either L1 hypervisor or L0 userspace) is always needed
+ * for I/O port accesses.
+ */
+ exec_control &= ~CPU_BASED_USE_IO_BITMAPS;
+ exec_control |= CPU_BASED_UNCOND_IO_EXITING;
+ vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, exec_control);
+
+ /*
+ * SECONDARY EXEC CONTROLS
+ */
+ if (cpu_has_secondary_exec_ctrls()) {
+ exec_control = vmx->secondary_exec_control;
+
+ /* Take the following fields only from vmcs12 */
+ exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
+ SECONDARY_EXEC_ENABLE_INVPCID |
+ SECONDARY_EXEC_RDTSCP |
+ SECONDARY_EXEC_XSAVES |
+ SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
+ SECONDARY_EXEC_APIC_REGISTER_VIRT |
+ SECONDARY_EXEC_ENABLE_VMFUNC);
+ if (nested_cpu_has(vmcs12,
+ CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)) {
+ vmcs12_exec_ctrl = vmcs12->secondary_vm_exec_control &
+ ~SECONDARY_EXEC_ENABLE_PML;
+ exec_control |= vmcs12_exec_ctrl;
+ }
+
+ /* VMCS shadowing for L2 is emulated for now */
+ exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
+
+ if (exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
+ vmcs_write16(GUEST_INTR_STATUS,
+ vmcs12->guest_intr_status);
+
+ /*
+ * Write an illegal value to APIC_ACCESS_ADDR. Later,
+ * nested_get_vmcs12_pages will either fix it up or
+ * remove the VM execution control.
+ */
+ if (exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
+ vmcs_write64(APIC_ACCESS_ADDR, -1ull);
+
+ if (exec_control & SECONDARY_EXEC_ENCLS_EXITING)
+ vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
+
+ vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
+ }
+
+ /*
+ * ENTRY CONTROLS
+ *
+ * vmcs12's VM_{ENTRY,EXIT}_LOAD_IA32_EFER and VM_ENTRY_IA32E_MODE
+ * are emulated by vmx_set_efer() in prepare_vmcs02(), but speculate
+ * on the related bits (if supported by the CPU) in the hope that
+ * we can avoid VMWrites during vmx_set_efer().
+ */
+ exec_control = (vmcs12->vm_entry_controls | vmcs_config.vmentry_ctrl) &
+ ~VM_ENTRY_IA32E_MODE & ~VM_ENTRY_LOAD_IA32_EFER;
+ if (cpu_has_load_ia32_efer) {
+ if (guest_efer & EFER_LMA)
+ exec_control |= VM_ENTRY_IA32E_MODE;
+ if (guest_efer != host_efer)
+ exec_control |= VM_ENTRY_LOAD_IA32_EFER;
+ }
+ vm_entry_controls_init(vmx, exec_control);
+
+ /*
+ * EXIT CONTROLS
+ *
+ * L2->L1 exit controls are emulated - the hardware exit is to L0 so
+ * we should use its exit controls. Note that VM_EXIT_LOAD_IA32_EFER
+ * bits may be modified by vmx_set_efer() in prepare_vmcs02().
+ */
+ exec_control = vmcs_config.vmexit_ctrl;
+ if (cpu_has_load_ia32_efer && guest_efer != host_efer)
+ exec_control |= VM_EXIT_LOAD_IA32_EFER;
+ vm_exit_controls_init(vmx, exec_control);
+
+ /*
+ * Conceptually we want to copy the PML address and index from
+ * vmcs01 here, and then back to vmcs01 on nested vmexit. But,
+ * since we always flush the log on each vmexit and never change
+ * the PML address (once set), this happens to be equivalent to
+ * simply resetting the index in vmcs02.
+ */
+ if (enable_pml)
+ vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
+
+ /*
+ * Interrupt/Exception Fields
+ */
+ if (vmx->nested.nested_run_pending) {
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
+ vmcs12->vm_entry_intr_info_field);
+ vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
+ vmcs12->vm_entry_exception_error_code);
+ vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
+ vmcs12->vm_entry_instruction_len);
+ vmcs_write32(GUEST_INTERRUPTIBILITY_INFO,
+ vmcs12->guest_interruptibility_info);
+ vmx->loaded_vmcs->nmi_known_unmasked =
+ !(vmcs12->guest_interruptibility_info & GUEST_INTR_STATE_NMI);
+ } else {
+ vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
+ }
+}
+static void prepare_vmcs02_full(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
+{
vmcs_write16(GUEST_ES_SELECTOR, vmcs12->guest_es_selector);
vmcs_write16(GUEST_SS_SELECTOR, vmcs12->guest_ss_selector);
vmcs_write16(GUEST_DS_SELECTOR, vmcs12->guest_ds_selector);
if (nested_cpu_has_xsaves(vmcs12))
vmcs_write64(XSS_EXIT_BITMAP, vmcs12->xss_exit_bitmap);
- vmcs_write64(VMCS_LINK_POINTER, -1ull);
-
- if (cpu_has_vmx_posted_intr())
- vmcs_write16(POSTED_INTR_NV, POSTED_INTR_NESTED_VECTOR);
/*
* Whether page-faults are trapped is determined by a combination of
vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH,
enable_ept ? vmcs12->page_fault_error_code_match : 0);
- /* All VMFUNCs are currently emulated through L0 vmexits. */
- if (cpu_has_vmx_vmfunc())
- vmcs_write64(VM_FUNCTION_CONTROL, 0);
-
if (cpu_has_vmx_apicv()) {
vmcs_write64(EOI_EXIT_BITMAP0, vmcs12->eoi_exit_bitmap0);
vmcs_write64(EOI_EXIT_BITMAP1, vmcs12->eoi_exit_bitmap1);
vmcs_write64(EOI_EXIT_BITMAP3, vmcs12->eoi_exit_bitmap3);
}
- /*
- * Set host-state according to L0's settings (vmcs12 is irrelevant here)
- * Some constant fields are set here by vmx_set_constant_host_state().
- * Other fields are different per CPU, and will be set later when
- * vmx_vcpu_load() is called, and when vmx_prepare_switch_to_guest()
- * is called.
- */
- vmx_set_constant_host_state(vmx);
-
- /*
- * Set the MSR load/store lists to match L0's settings.
- */
- vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, vmx->msr_autoload.host.nr);
- vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
- vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
set_cr4_guest_host_mask(vmx);
vmcs_write64(GUEST_BNDCFGS, vmx->nested.vmcs01_guest_bndcfgs);
}
- if (enable_vpid) {
- if (nested_cpu_has_vpid(vmcs12) && vmx->nested.vpid02)
- vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->nested.vpid02);
- else
- vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
- }
-
/*
* L1 may access the L2's PDPTR, so save them to construct vmcs12
*/
vmcs_write64(GUEST_PDPTR2, vmcs12->guest_pdptr2);
vmcs_write64(GUEST_PDPTR3, vmcs12->guest_pdptr3);
}
-
- if (cpu_has_vmx_msr_bitmap())
- vmcs_write64(MSR_BITMAP, __pa(vmx->nested.vmcs02.msr_bitmap));
}
/*
u32 *entry_failure_code)
{
struct vcpu_vmx *vmx = to_vmx(vcpu);
- u32 exec_control, vmcs12_exec_ctrl;
- u64 guest_efer;
if (vmx->nested.dirty_vmcs12) {
- prepare_vmcs02_full(vcpu, vmcs12);
+ prepare_vmcs02_full(vmx, vmcs12);
vmx->nested.dirty_vmcs12 = false;
}
kvm_set_dr(vcpu, 7, vcpu->arch.dr7);
vmcs_write64(GUEST_IA32_DEBUGCTL, vmx->nested.vmcs01_debugctl);
}
- if (vmx->nested.nested_run_pending) {
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD,
- vmcs12->vm_entry_intr_info_field);
- vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE,
- vmcs12->vm_entry_exception_error_code);
- vmcs_write32(VM_ENTRY_INSTRUCTION_LEN,
- vmcs12->vm_entry_instruction_len);
- vmcs_write32(GUEST_INTERRUPTIBILITY_INFO,
- vmcs12->guest_interruptibility_info);
- vmx->loaded_vmcs->nmi_known_unmasked =
- !(vmcs12->guest_interruptibility_info & GUEST_INTR_STATE_NMI);
- } else {
- vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, 0);
- }
vmx_set_rflags(vcpu, vmcs12->guest_rflags);
- exec_control = vmcs12->pin_based_vm_exec_control;
-
- /* Preemption timer setting is computed directly in vmx_vcpu_run. */
- exec_control |= vmcs_config.pin_based_exec_ctrl;
- exec_control &= ~PIN_BASED_VMX_PREEMPTION_TIMER;
- vmx->loaded_vmcs->hv_timer_armed = false;
-
- /* Posted interrupts setting is only taken from vmcs12. */
- if (nested_cpu_has_posted_intr(vmcs12)) {
- vmx->nested.posted_intr_nv = vmcs12->posted_intr_nv;
- vmx->nested.pi_pending = false;
- } else {
- exec_control &= ~PIN_BASED_POSTED_INTR;
- }
-
- vmcs_write32(PIN_BASED_VM_EXEC_CONTROL, exec_control);
-
vmx->nested.preemption_timer_expired = false;
if (nested_cpu_has_preemption_timer(vmcs12))
vmx_start_preemption_timer(vcpu);
- if (cpu_has_secondary_exec_ctrls()) {
- exec_control = vmx->secondary_exec_control;
-
- /* Take the following fields only from vmcs12 */
- exec_control &= ~(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
- SECONDARY_EXEC_ENABLE_INVPCID |
- SECONDARY_EXEC_RDTSCP |
- SECONDARY_EXEC_XSAVES |
- SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
- SECONDARY_EXEC_APIC_REGISTER_VIRT |
- SECONDARY_EXEC_ENABLE_VMFUNC);
- if (nested_cpu_has(vmcs12,
- CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)) {
- vmcs12_exec_ctrl = vmcs12->secondary_vm_exec_control &
- ~SECONDARY_EXEC_ENABLE_PML;
- exec_control |= vmcs12_exec_ctrl;
- }
-
- /* VMCS shadowing for L2 is emulated for now */
- exec_control &= ~SECONDARY_EXEC_SHADOW_VMCS;
-
- if (exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY)
- vmcs_write16(GUEST_INTR_STATUS,
- vmcs12->guest_intr_status);
-
- /*
- * Write an illegal value to APIC_ACCESS_ADDR. Later,
- * nested_get_vmcs12_pages will either fix it up or
- * remove the VM execution control.
- */
- if (exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)
- vmcs_write64(APIC_ACCESS_ADDR, -1ull);
-
- if (exec_control & SECONDARY_EXEC_ENCLS_EXITING)
- vmcs_write64(ENCLS_EXITING_BITMAP, -1ull);
-
- vmcs_write32(SECONDARY_VM_EXEC_CONTROL, exec_control);
- }
-
- /*
- * HOST_RSP is normally set correctly in vmx_vcpu_run() just before
- * entry, but only if the current (host) sp changed from the value
- * we wrote last (vmx->host_rsp). This cache is no longer relevant
- * if we switch vmcs, and rather than hold a separate cache per vmcs,
- * here we just force the write to happen on entry.
- */
- vmx->host_rsp = 0;
-
- exec_control = vmx_exec_control(vmx); /* L0's desires */
- exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
- exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING;
- exec_control &= ~CPU_BASED_TPR_SHADOW;
- exec_control |= vmcs12->cpu_based_vm_exec_control;
-
- /*
- * Write an illegal value to VIRTUAL_APIC_PAGE_ADDR. Later, if
- * nested_get_vmcs12_pages can't fix it up, the illegal value
- * will result in a VM entry failure.
- */
- if (exec_control & CPU_BASED_TPR_SHADOW) {
- vmcs_write64(VIRTUAL_APIC_PAGE_ADDR, -1ull);
- vmcs_write32(TPR_THRESHOLD, vmcs12->tpr_threshold);
- } else {
-#ifdef CONFIG_X86_64
- exec_control |= CPU_BASED_CR8_LOAD_EXITING |
- CPU_BASED_CR8_STORE_EXITING;
-#endif
- }
-
- /*
- * A vmexit (to either L1 hypervisor or L0 userspace) is always needed
- * for I/O port accesses.
- */
- exec_control &= ~CPU_BASED_USE_IO_BITMAPS;
- exec_control |= CPU_BASED_UNCOND_IO_EXITING;
-
- vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, exec_control);
-
/* EXCEPTION_BITMAP and CR0_GUEST_HOST_MASK should basically be the
* bitwise-or of what L1 wants to trap for L2, and what we want to
* trap. Note that CR0.TS also needs updating - we do this later.
vcpu->arch.cr0_guest_owned_bits &= ~vmcs12->cr0_guest_host_mask;
vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits);
- /*
- * vmcs12's VM_{ENTRY,EXIT}_LOAD_IA32_EFER and VM_ENTRY_IA32E_MODE
- * are emulated by vmx_set_efer(), below, but speculate on the
- * related bits (if supported by the CPU) in the hope that we can
- * avoid VMWrites during vmx_set_efer().
- */
- guest_efer = nested_vmx_calc_efer(vmx, vmcs12);
-
- /* L2->L1 exit controls are emulated - the hardware exit is to L0 so
- * we should use its exit controls. Note that VM_EXIT_LOAD_IA32_EFER
- * bits are further modified by vmx_set_efer() below.
- */
- exec_control = vmcs_config.vmexit_ctrl;
- if (cpu_has_load_ia32_efer && guest_efer != host_efer)
- exec_control |= VM_EXIT_LOAD_IA32_EFER;
- vm_exit_controls_init(vmx, exec_control);
-
- exec_control = (vmcs12->vm_entry_controls | vmcs_config.vmentry_ctrl) &
- ~VM_ENTRY_IA32E_MODE & ~VM_ENTRY_LOAD_IA32_EFER;
- if (cpu_has_load_ia32_efer) {
- if (guest_efer & EFER_LMA)
- exec_control |= VM_ENTRY_IA32E_MODE;
- if (guest_efer != host_efer)
- exec_control |= VM_ENTRY_LOAD_IA32_EFER;
- }
- vm_entry_controls_init(vmx, exec_control);
-
if (vmx->nested.nested_run_pending &&
(vmcs12->vm_entry_controls & VM_ENTRY_LOAD_IA32_PAT)) {
vmcs_write64(GUEST_IA32_PAT, vmcs12->guest_ia32_pat);
}
}
- if (enable_pml) {
- /*
- * Conceptually we want to copy the PML address and index from
- * vmcs01 here, and then back to vmcs01 on nested vmexit. But,
- * since we always flush the log on each vmexit, this happens
- * to be equivalent to simply resetting the fields in vmcs02.
- */
- vmcs_write64(PML_ADDRESS, page_to_phys(vmx->pml_pg));
- vmcs_write16(GUEST_PML_INDEX, PML_ENTITY_NUM - 1);
- }
-
if (nested_cpu_has_ept(vmcs12))
nested_ept_init_mmu_context(vcpu);
else if (nested_cpu_has2(vmcs12,
vmx_set_cr4(vcpu, vmcs12->guest_cr4);
vmcs_writel(CR4_READ_SHADOW, nested_read_cr4(vmcs12));
- vcpu->arch.efer = guest_efer;
+ vcpu->arch.efer = nested_vmx_calc_efer(vmx, vmcs12);
/* Note: may modify VM_ENTRY/EXIT_CONTROLS and GUEST/HOST_IA32_EFER */
vmx_set_efer(vcpu, vcpu->arch.efer);
if (vmcs12->cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING)
vcpu->arch.tsc_offset += vmcs12->tsc_offset;
+ prepare_vmcs02_early(vmx, vmcs12);
+
if (prepare_vmcs02(vcpu, vmcs12, &exit_qual))
goto vmentry_fail_vmexit_guest_mode;
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