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Subject[RFC PATCH v2 55/69] KVM: VMX: Add 'main.c' to wrap VMX and TDX
Date
From: Sean Christopherson <sean.j.christopherson@intel.com>

Wrap the VMX kvm_x86_ops hooks in preparation of adding TDX, which can
coexist with VMX, i.e. KVM can run both VMs and TDs. Use 'vt' for the
naming scheme as a nod to VT-x and as a concatenation of VmxTdx.

Reported-by: kernel test robot <lkp@intel.com>
Co-developed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/kvm/Makefile | 2 +-
arch/x86/kvm/vmx/main.c | 710 ++++++++++++++++++++++++++++++++++++++++
arch/x86/kvm/vmx/vmx.c | 283 ++++------------
3 files changed, 768 insertions(+), 227 deletions(-)
create mode 100644 arch/x86/kvm/vmx/main.c

diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index 60f3e90fef8b..3c3815bd0f56 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -21,7 +21,7 @@ kvm-y += x86.o emulate.o i8259.o irq.o lapic.o \
kvm-$(CONFIG_X86_64) += mmu/tdp_iter.o mmu/tdp_mmu.o
kvm-$(CONFIG_KVM_XEN) += xen.o

-kvm-intel-y += vmx/vmx.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o \
+kvm-intel-y += vmx/main.o vmx/vmenter.o vmx/pmu_intel.o vmx/vmcs12.o \
vmx/evmcs.o vmx/nested.o vmx/posted_intr.o
kvm-intel-$(CONFIG_X86_SGX_KVM) += vmx/sgx.o
kvm-intel-$(CONFIG_KVM_INTEL_TDX) += vmx/seamcall.o
diff --git a/arch/x86/kvm/vmx/main.c b/arch/x86/kvm/vmx/main.c
new file mode 100644
index 000000000000..c3fefa0e5a63
--- /dev/null
+++ b/arch/x86/kvm/vmx/main.c
@@ -0,0 +1,710 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/moduleparam.h>
+
+static struct kvm_x86_ops vt_x86_ops __initdata;
+
+#include "vmx.c"
+
+static int __init vt_cpu_has_kvm_support(void)
+{
+ return cpu_has_vmx();
+}
+
+static int __init vt_disabled_by_bios(void)
+{
+ return vmx_disabled_by_bios();
+}
+
+static int __init vt_check_processor_compatibility(void)
+{
+ int ret;
+
+ ret = vmx_check_processor_compat();
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static __init int vt_hardware_setup(void)
+{
+ int ret;
+
+ ret = hardware_setup();
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int vt_hardware_enable(void)
+{
+ return hardware_enable();
+}
+
+static void vt_hardware_disable(void)
+{
+ hardware_disable();
+}
+
+static bool vt_cpu_has_accelerated_tpr(void)
+{
+ return report_flexpriority();
+}
+
+static bool vt_is_vm_type_supported(unsigned long type)
+{
+ return type == KVM_X86_LEGACY_VM;
+}
+
+static int vt_vm_init(struct kvm *kvm)
+{
+ return vmx_vm_init(kvm);
+}
+
+static void vt_vm_teardown(struct kvm *kvm)
+{
+
+}
+
+static void vt_vm_destroy(struct kvm *kvm)
+{
+
+}
+
+static int vt_vcpu_create(struct kvm_vcpu *vcpu)
+{
+ return vmx_create_vcpu(vcpu);
+}
+
+static fastpath_t vt_vcpu_run(struct kvm_vcpu *vcpu)
+{
+ return vmx_vcpu_run(vcpu);
+}
+
+static void vt_vcpu_free(struct kvm_vcpu *vcpu)
+{
+ return vmx_free_vcpu(vcpu);
+}
+
+static void vt_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
+{
+ return vmx_vcpu_reset(vcpu, init_event);
+}
+
+static void vt_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
+{
+ return vmx_vcpu_load(vcpu, cpu);
+}
+
+static void vt_vcpu_put(struct kvm_vcpu *vcpu)
+{
+ return vmx_vcpu_put(vcpu);
+}
+
+static int vt_handle_exit(struct kvm_vcpu *vcpu,
+ enum exit_fastpath_completion fastpath)
+{
+ return vmx_handle_exit(vcpu, fastpath);
+}
+
+static void vt_handle_exit_irqoff(struct kvm_vcpu *vcpu)
+{
+ vmx_handle_exit_irqoff(vcpu);
+}
+
+static int vt_skip_emulated_instruction(struct kvm_vcpu *vcpu)
+{
+ return vmx_skip_emulated_instruction(vcpu);
+}
+
+static void vt_update_emulated_instruction(struct kvm_vcpu *vcpu)
+{
+ vmx_update_emulated_instruction(vcpu);
+}
+
+static int vt_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+{
+ return vmx_set_msr(vcpu, msr_info);
+}
+
+static int vt_smi_allowed(struct kvm_vcpu *vcpu, bool for_injection)
+{
+ return vmx_smi_allowed(vcpu, for_injection);
+}
+
+static int vt_pre_enter_smm(struct kvm_vcpu *vcpu, char *smstate)
+{
+ return vmx_pre_enter_smm(vcpu, smstate);
+}
+
+static int vt_pre_leave_smm(struct kvm_vcpu *vcpu, const char *smstate)
+{
+ return vmx_pre_leave_smm(vcpu, smstate);
+}
+
+static void vt_enable_smi_window(struct kvm_vcpu *vcpu)
+{
+ /* RSM will cause a vmexit anyway. */
+ vmx_enable_smi_window(vcpu);
+}
+
+static bool vt_can_emulate_instruction(struct kvm_vcpu *vcpu, void *insn,
+ int insn_len)
+{
+ return vmx_can_emulate_instruction(vcpu, insn, insn_len);
+}
+
+static int vt_check_intercept(struct kvm_vcpu *vcpu,
+ struct x86_instruction_info *info,
+ enum x86_intercept_stage stage,
+ struct x86_exception *exception)
+{
+ return vmx_check_intercept(vcpu, info, stage, exception);
+}
+
+static bool vt_apic_init_signal_blocked(struct kvm_vcpu *vcpu)
+{
+ return vmx_apic_init_signal_blocked(vcpu);
+}
+
+static void vt_migrate_timers(struct kvm_vcpu *vcpu)
+{
+ vmx_migrate_timers(vcpu);
+}
+
+static void vt_set_virtual_apic_mode(struct kvm_vcpu *vcpu)
+{
+ return vmx_set_virtual_apic_mode(vcpu);
+}
+
+static void vt_apicv_post_state_restore(struct kvm_vcpu *vcpu)
+{
+ return vmx_apicv_post_state_restore(vcpu);
+}
+
+static bool vt_check_apicv_inhibit_reasons(ulong bit)
+{
+ return vmx_check_apicv_inhibit_reasons(bit);
+}
+
+static void vt_hwapic_irr_update(struct kvm_vcpu *vcpu, int max_irr)
+{
+ return vmx_hwapic_irr_update(vcpu, max_irr);
+}
+
+static void vt_hwapic_isr_update(struct kvm_vcpu *vcpu, int max_isr)
+{
+ return vmx_hwapic_isr_update(vcpu, max_isr);
+}
+
+static bool vt_guest_apic_has_interrupt(struct kvm_vcpu *vcpu)
+{
+ return vmx_guest_apic_has_interrupt(vcpu);
+}
+
+static int vt_sync_pir_to_irr(struct kvm_vcpu *vcpu)
+{
+ return vmx_sync_pir_to_irr(vcpu);
+}
+
+static int vt_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
+{
+ return vmx_deliver_posted_interrupt(vcpu, vector);
+}
+
+static void vt_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
+{
+ return vmx_vcpu_after_set_cpuid(vcpu);
+}
+
+/*
+ * The kvm parameter can be NULL (module initialization, or invocation before
+ * VM creation). Be sure to check the kvm parameter before using it.
+ */
+static bool vt_has_emulated_msr(struct kvm *kvm, u32 index)
+{
+ return vmx_has_emulated_msr(kvm, index);
+}
+
+static void vt_msr_filter_changed(struct kvm_vcpu *vcpu)
+{
+ vmx_msr_filter_changed(vcpu);
+}
+
+static void vt_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
+{
+ vmx_prepare_switch_to_guest(vcpu);
+}
+
+static void vt_update_exception_bitmap(struct kvm_vcpu *vcpu)
+{
+ vmx_update_exception_bitmap(vcpu);
+}
+
+static int vt_get_msr_feature(struct kvm_msr_entry *msr)
+{
+ return vmx_get_msr_feature(msr);
+}
+
+static int vt_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
+{
+ return vmx_get_msr(vcpu, msr_info);
+}
+
+static u64 vt_get_segment_base(struct kvm_vcpu *vcpu, int seg)
+{
+ return vmx_get_segment_base(vcpu, seg);
+}
+
+static void vt_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var,
+ int seg)
+{
+ vmx_get_segment(vcpu, var, seg);
+}
+
+static void vt_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var,
+ int seg)
+{
+ vmx_set_segment(vcpu, var, seg);
+}
+
+static int vt_get_cpl(struct kvm_vcpu *vcpu)
+{
+ return vmx_get_cpl(vcpu);
+}
+
+static void vt_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
+{
+ vmx_get_cs_db_l_bits(vcpu, db, l);
+}
+
+static void vt_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
+{
+ vmx_set_cr0(vcpu, cr0);
+}
+
+static void vt_load_mmu_pgd(struct kvm_vcpu *vcpu, hpa_t root_hpa,
+ int pgd_level)
+{
+ vmx_load_mmu_pgd(vcpu, root_hpa, pgd_level);
+}
+
+static void vt_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+ vmx_set_cr4(vcpu, cr4);
+}
+
+static bool vt_is_valid_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
+{
+ return vmx_is_valid_cr4(vcpu, cr4);
+}
+
+static int vt_set_efer(struct kvm_vcpu *vcpu, u64 efer)
+{
+ return vmx_set_efer(vcpu, efer);
+}
+
+static void vt_get_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+ vmx_get_idt(vcpu, dt);
+}
+
+static void vt_set_idt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+ vmx_set_idt(vcpu, dt);
+}
+
+static void vt_get_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+ vmx_get_gdt(vcpu, dt);
+}
+
+static void vt_set_gdt(struct kvm_vcpu *vcpu, struct desc_ptr *dt)
+{
+ vmx_set_gdt(vcpu, dt);
+}
+
+static void vt_set_dr7(struct kvm_vcpu *vcpu, unsigned long val)
+{
+ vmx_set_dr7(vcpu, val);
+}
+
+static void vt_sync_dirty_debug_regs(struct kvm_vcpu *vcpu)
+{
+ vmx_sync_dirty_debug_regs(vcpu);
+}
+
+static void vt_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
+{
+ vmx_cache_reg(vcpu, reg);
+}
+
+static unsigned long vt_get_rflags(struct kvm_vcpu *vcpu)
+{
+ return vmx_get_rflags(vcpu);
+}
+
+static void vt_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
+{
+ vmx_set_rflags(vcpu, rflags);
+}
+
+static void vt_flush_tlb_all(struct kvm_vcpu *vcpu)
+{
+ vmx_flush_tlb_all(vcpu);
+}
+
+static void vt_flush_tlb_current(struct kvm_vcpu *vcpu)
+{
+ vmx_flush_tlb_current(vcpu);
+}
+
+static void vt_flush_tlb_gva(struct kvm_vcpu *vcpu, gva_t addr)
+{
+ vmx_flush_tlb_gva(vcpu, addr);
+}
+
+static void vt_flush_tlb_guest(struct kvm_vcpu *vcpu)
+{
+ vmx_flush_tlb_guest(vcpu);
+}
+
+static void vt_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask)
+{
+ vmx_set_interrupt_shadow(vcpu, mask);
+}
+
+static u32 vt_get_interrupt_shadow(struct kvm_vcpu *vcpu)
+{
+ return vmx_get_interrupt_shadow(vcpu);
+}
+
+static void vt_patch_hypercall(struct kvm_vcpu *vcpu,
+ unsigned char *hypercall)
+{
+ vmx_patch_hypercall(vcpu, hypercall);
+}
+
+static void vt_inject_irq(struct kvm_vcpu *vcpu)
+{
+ vmx_inject_irq(vcpu);
+}
+
+static void vt_inject_nmi(struct kvm_vcpu *vcpu)
+{
+ vmx_inject_nmi(vcpu);
+}
+
+static void vt_queue_exception(struct kvm_vcpu *vcpu)
+{
+ vmx_queue_exception(vcpu);
+}
+
+static void vt_cancel_injection(struct kvm_vcpu *vcpu)
+{
+ vmx_cancel_injection(vcpu);
+}
+
+static int vt_interrupt_allowed(struct kvm_vcpu *vcpu, bool for_injection)
+{
+ return vmx_interrupt_allowed(vcpu, for_injection);
+}
+
+static int vt_nmi_allowed(struct kvm_vcpu *vcpu, bool for_injection)
+{
+ return vmx_nmi_allowed(vcpu, for_injection);
+}
+
+static bool vt_get_nmi_mask(struct kvm_vcpu *vcpu)
+{
+ return vmx_get_nmi_mask(vcpu);
+}
+
+static void vt_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked)
+{
+ vmx_set_nmi_mask(vcpu, masked);
+}
+
+static void vt_enable_nmi_window(struct kvm_vcpu *vcpu)
+{
+ vmx_enable_nmi_window(vcpu);
+}
+
+static void vt_enable_irq_window(struct kvm_vcpu *vcpu)
+{
+ vmx_enable_irq_window(vcpu);
+}
+
+static void vt_update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
+{
+ vmx_update_cr8_intercept(vcpu, tpr, irr);
+}
+
+static void vt_set_apic_access_page_addr(struct kvm_vcpu *vcpu)
+{
+ vmx_set_apic_access_page_addr(vcpu);
+}
+
+static void vt_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu)
+{
+ vmx_refresh_apicv_exec_ctrl(vcpu);
+}
+
+static void vt_load_eoi_exitmap(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap)
+{
+ vmx_load_eoi_exitmap(vcpu, eoi_exit_bitmap);
+}
+
+static int vt_set_tss_addr(struct kvm *kvm, unsigned int addr)
+{
+ return vmx_set_tss_addr(kvm, addr);
+}
+
+static int vt_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
+{
+ return vmx_set_identity_map_addr(kvm, ident_addr);
+}
+
+static u64 vt_get_mt_mask(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio)
+{
+ return vmx_get_mt_mask(vcpu, gfn, is_mmio);
+}
+
+static void vt_get_exit_info(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2,
+ u32 *intr_info, u32 *error_code)
+{
+
+ return vmx_get_exit_info(vcpu, info1, info2, intr_info, error_code);
+}
+
+static u64 vt_write_l1_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
+{
+ return vmx_write_l1_tsc_offset(vcpu, offset);
+}
+
+static void vt_request_immediate_exit(struct kvm_vcpu *vcpu)
+{
+ vmx_request_immediate_exit(vcpu);
+}
+
+static void vt_sched_in(struct kvm_vcpu *vcpu, int cpu)
+{
+ vmx_sched_in(vcpu, cpu);
+}
+
+static void vt_update_cpu_dirty_logging(struct kvm_vcpu *vcpu)
+{
+ vmx_update_cpu_dirty_logging(vcpu);
+}
+
+static int vt_pre_block(struct kvm_vcpu *vcpu)
+{
+ if (pi_pre_block(vcpu))
+ return 1;
+
+ return vmx_pre_block(vcpu);
+}
+
+static void vt_post_block(struct kvm_vcpu *vcpu)
+{
+ vmx_post_block(vcpu);
+
+ pi_post_block(vcpu);
+}
+
+
+#ifdef CONFIG_X86_64
+static int vt_set_hv_timer(struct kvm_vcpu *vcpu, u64 guest_deadline_tsc,
+ bool *expired)
+{
+ return vmx_set_hv_timer(vcpu, guest_deadline_tsc, expired);
+}
+
+static void vt_cancel_hv_timer(struct kvm_vcpu *vcpu)
+{
+ vmx_cancel_hv_timer(vcpu);
+}
+#endif
+
+static void vt_setup_mce(struct kvm_vcpu *vcpu)
+{
+ vmx_setup_mce(vcpu);
+}
+
+static struct kvm_x86_ops vt_x86_ops __initdata = {
+ .hardware_unsetup = hardware_unsetup,
+
+ .hardware_enable = vt_hardware_enable,
+ .hardware_disable = vt_hardware_disable,
+ .cpu_has_accelerated_tpr = vt_cpu_has_accelerated_tpr,
+ .has_emulated_msr = vt_has_emulated_msr,
+
+ .is_vm_type_supported = vt_is_vm_type_supported,
+ .vm_size = sizeof(struct kvm_vmx),
+ .vm_init = vt_vm_init,
+ .vm_teardown = vt_vm_teardown,
+ .vm_destroy = vt_vm_destroy,
+
+ .vcpu_create = vt_vcpu_create,
+ .vcpu_free = vt_vcpu_free,
+ .vcpu_reset = vt_vcpu_reset,
+
+ .prepare_guest_switch = vt_prepare_switch_to_guest,
+ .vcpu_load = vt_vcpu_load,
+ .vcpu_put = vt_vcpu_put,
+
+ .update_exception_bitmap = vt_update_exception_bitmap,
+ .get_msr_feature = vt_get_msr_feature,
+ .get_msr = vt_get_msr,
+ .set_msr = vt_set_msr,
+ .get_segment_base = vt_get_segment_base,
+ .get_segment = vt_get_segment,
+ .set_segment = vt_set_segment,
+ .get_cpl = vt_get_cpl,
+ .get_cs_db_l_bits = vt_get_cs_db_l_bits,
+ .set_cr0 = vt_set_cr0,
+ .is_valid_cr4 = vt_is_valid_cr4,
+ .set_cr4 = vt_set_cr4,
+ .set_efer = vt_set_efer,
+ .get_idt = vt_get_idt,
+ .set_idt = vt_set_idt,
+ .get_gdt = vt_get_gdt,
+ .set_gdt = vt_set_gdt,
+ .set_dr7 = vt_set_dr7,
+ .sync_dirty_debug_regs = vt_sync_dirty_debug_regs,
+ .cache_reg = vt_cache_reg,
+ .get_rflags = vt_get_rflags,
+ .set_rflags = vt_set_rflags,
+
+ .tlb_flush_all = vt_flush_tlb_all,
+ .tlb_flush_current = vt_flush_tlb_current,
+ .tlb_flush_gva = vt_flush_tlb_gva,
+ .tlb_flush_guest = vt_flush_tlb_guest,
+
+ .run = vt_vcpu_run,
+ .handle_exit = vt_handle_exit,
+ .skip_emulated_instruction = vt_skip_emulated_instruction,
+ .update_emulated_instruction = vt_update_emulated_instruction,
+ .set_interrupt_shadow = vt_set_interrupt_shadow,
+ .get_interrupt_shadow = vt_get_interrupt_shadow,
+ .patch_hypercall = vt_patch_hypercall,
+ .set_irq = vt_inject_irq,
+ .set_nmi = vt_inject_nmi,
+ .queue_exception = vt_queue_exception,
+ .cancel_injection = vt_cancel_injection,
+ .interrupt_allowed = vt_interrupt_allowed,
+ .nmi_allowed = vt_nmi_allowed,
+ .get_nmi_mask = vt_get_nmi_mask,
+ .set_nmi_mask = vt_set_nmi_mask,
+ .enable_nmi_window = vt_enable_nmi_window,
+ .enable_irq_window = vt_enable_irq_window,
+ .update_cr8_intercept = vt_update_cr8_intercept,
+ .set_virtual_apic_mode = vt_set_virtual_apic_mode,
+ .set_apic_access_page_addr = vt_set_apic_access_page_addr,
+ .refresh_apicv_exec_ctrl = vt_refresh_apicv_exec_ctrl,
+ .load_eoi_exitmap = vt_load_eoi_exitmap,
+ .apicv_post_state_restore = vt_apicv_post_state_restore,
+ .check_apicv_inhibit_reasons = vt_check_apicv_inhibit_reasons,
+ .hwapic_irr_update = vt_hwapic_irr_update,
+ .hwapic_isr_update = vt_hwapic_isr_update,
+ .guest_apic_has_interrupt = vt_guest_apic_has_interrupt,
+ .sync_pir_to_irr = vt_sync_pir_to_irr,
+ .deliver_posted_interrupt = vt_deliver_posted_interrupt,
+ .dy_apicv_has_pending_interrupt = pi_has_pending_interrupt,
+
+ .set_tss_addr = vt_set_tss_addr,
+ .set_identity_map_addr = vt_set_identity_map_addr,
+ .get_mt_mask = vt_get_mt_mask,
+
+ .get_exit_info = vt_get_exit_info,
+
+ .vcpu_after_set_cpuid = vt_vcpu_after_set_cpuid,
+
+ .has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
+
+ .write_l1_tsc_offset = vt_write_l1_tsc_offset,
+
+ .load_mmu_pgd = vt_load_mmu_pgd,
+
+ .check_intercept = vt_check_intercept,
+ .handle_exit_irqoff = vt_handle_exit_irqoff,
+
+ .request_immediate_exit = vt_request_immediate_exit,
+
+ .sched_in = vt_sched_in,
+
+ .cpu_dirty_log_size = PML_ENTITY_NUM,
+ .update_cpu_dirty_logging = vt_update_cpu_dirty_logging,
+
+ .pre_block = vt_pre_block,
+ .post_block = vt_post_block,
+
+ .pmu_ops = &intel_pmu_ops,
+ .nested_ops = &vmx_nested_ops,
+
+ .update_pi_irte = pi_update_irte,
+
+#ifdef CONFIG_X86_64
+ .set_hv_timer = vt_set_hv_timer,
+ .cancel_hv_timer = vt_cancel_hv_timer,
+#endif
+
+ .setup_mce = vt_setup_mce,
+
+ .smi_allowed = vt_smi_allowed,
+ .pre_enter_smm = vt_pre_enter_smm,
+ .pre_leave_smm = vt_pre_leave_smm,
+ .enable_smi_window = vt_enable_smi_window,
+
+ .can_emulate_instruction = vt_can_emulate_instruction,
+ .apic_init_signal_blocked = vt_apic_init_signal_blocked,
+ .migrate_timers = vt_migrate_timers,
+
+ .msr_filter_changed = vt_msr_filter_changed,
+ .complete_emulated_msr = kvm_complete_insn_gp,
+
+ .vcpu_deliver_sipi_vector = kvm_vcpu_deliver_sipi_vector,
+};
+
+static struct kvm_x86_init_ops vt_init_ops __initdata = {
+ .cpu_has_kvm_support = vt_cpu_has_kvm_support,
+ .disabled_by_bios = vt_disabled_by_bios,
+ .check_processor_compatibility = vt_check_processor_compatibility,
+ .hardware_setup = vt_hardware_setup,
+
+ .runtime_ops = &vt_x86_ops,
+};
+
+static int __init vt_init(void)
+{
+ unsigned int vcpu_size = 0, vcpu_align = 0;
+ int r;
+
+ vmx_pre_kvm_init(&vcpu_size, &vcpu_align);
+
+ r = kvm_init(&vt_init_ops, vcpu_size, vcpu_align, THIS_MODULE);
+ if (r)
+ goto err_vmx_post_exit;
+
+ r = vmx_init();
+ if (r)
+ goto err_kvm_exit;
+
+ return 0;
+
+err_kvm_exit:
+ kvm_exit();
+err_vmx_post_exit:
+ vmx_post_kvm_exit();
+ return r;
+}
+module_init(vt_init);
+
+static void vt_exit(void)
+{
+ vmx_exit();
+ kvm_exit();
+ vmx_post_kvm_exit();
+}
+module_exit(vt_exit);
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 8a104a54121b..77b2b2cf76db 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2366,11 +2366,6 @@ static void vmx_cache_reg(struct kvm_vcpu *vcpu, enum kvm_reg reg)
}
}

-static __init int cpu_has_kvm_support(void)
-{
- return cpu_has_vmx();
-}
-
static __init int vmx_disabled_by_bios(void)
{
return !boot_cpu_has(X86_FEATURE_MSR_IA32_FEAT_CTL) ||
@@ -6891,11 +6886,6 @@ static int vmx_create_vcpu(struct kvm_vcpu *vcpu)
return err;
}

-static bool vmx_is_vm_type_supported(unsigned long type)
-{
- return type == KVM_X86_LEGACY_VM;
-}
-
#define L1TF_MSG_SMT "L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.\n"
#define L1TF_MSG_L1D "L1TF CPU bug present and virtualization mitigation disabled, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.\n"

@@ -6935,16 +6925,6 @@ static int vmx_vm_init(struct kvm *kvm)
return 0;
}

-static void vmx_vm_teardown(struct kvm *kvm)
-{
-
-}
-
-static void vmx_vm_destroy(struct kvm *kvm)
-{
-
-}
-
static int __init vmx_check_processor_compat(void)
{
struct vmcs_config vmcs_conf;
@@ -7447,9 +7427,6 @@ void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu)

static int vmx_pre_block(struct kvm_vcpu *vcpu)
{
- if (pi_pre_block(vcpu))
- return 1;
-
if (kvm_lapic_hv_timer_in_use(vcpu))
kvm_lapic_switch_to_sw_timer(vcpu);

@@ -7460,8 +7437,6 @@ static void vmx_post_block(struct kvm_vcpu *vcpu)
{
if (kvm_x86_ops.set_hv_timer)
kvm_lapic_switch_to_hv_timer(vcpu);
-
- pi_post_block(vcpu);
}

static void vmx_setup_mce(struct kvm_vcpu *vcpu)
@@ -7552,142 +7527,6 @@ static bool vmx_check_apicv_inhibit_reasons(ulong bit)
return supported & BIT(bit);
}

-static struct kvm_x86_ops vmx_x86_ops __initdata = {
- .hardware_unsetup = hardware_unsetup,
-
- .hardware_enable = hardware_enable,
- .hardware_disable = hardware_disable,
- .cpu_has_accelerated_tpr = report_flexpriority,
- .has_emulated_msr = vmx_has_emulated_msr,
-
- .is_vm_type_supported = vmx_is_vm_type_supported,
- .vm_size = sizeof(struct kvm_vmx),
- .vm_init = vmx_vm_init,
- .vm_teardown = vmx_vm_teardown,
- .vm_destroy = vmx_vm_destroy,
-
- .vcpu_create = vmx_create_vcpu,
- .vcpu_free = vmx_free_vcpu,
- .vcpu_reset = vmx_vcpu_reset,
-
- .prepare_guest_switch = vmx_prepare_switch_to_guest,
- .vcpu_load = vmx_vcpu_load,
- .vcpu_put = vmx_vcpu_put,
-
- .update_exception_bitmap = vmx_update_exception_bitmap,
- .get_msr_feature = vmx_get_msr_feature,
- .get_msr = vmx_get_msr,
- .set_msr = vmx_set_msr,
- .get_segment_base = vmx_get_segment_base,
- .get_segment = vmx_get_segment,
- .set_segment = vmx_set_segment,
- .get_cpl = vmx_get_cpl,
- .get_cs_db_l_bits = vmx_get_cs_db_l_bits,
- .set_cr0 = vmx_set_cr0,
- .is_valid_cr4 = vmx_is_valid_cr4,
- .set_cr4 = vmx_set_cr4,
- .set_efer = vmx_set_efer,
- .get_idt = vmx_get_idt,
- .set_idt = vmx_set_idt,
- .get_gdt = vmx_get_gdt,
- .set_gdt = vmx_set_gdt,
- .set_dr7 = vmx_set_dr7,
- .sync_dirty_debug_regs = vmx_sync_dirty_debug_regs,
- .cache_reg = vmx_cache_reg,
- .get_rflags = vmx_get_rflags,
- .set_rflags = vmx_set_rflags,
-
- .tlb_flush_all = vmx_flush_tlb_all,
- .tlb_flush_current = vmx_flush_tlb_current,
- .tlb_flush_gva = vmx_flush_tlb_gva,
- .tlb_flush_guest = vmx_flush_tlb_guest,
-
- .run = vmx_vcpu_run,
- .handle_exit = vmx_handle_exit,
- .skip_emulated_instruction = vmx_skip_emulated_instruction,
- .update_emulated_instruction = vmx_update_emulated_instruction,
- .set_interrupt_shadow = vmx_set_interrupt_shadow,
- .get_interrupt_shadow = vmx_get_interrupt_shadow,
- .patch_hypercall = vmx_patch_hypercall,
- .set_irq = vmx_inject_irq,
- .set_nmi = vmx_inject_nmi,
- .queue_exception = vmx_queue_exception,
- .cancel_injection = vmx_cancel_injection,
- .interrupt_allowed = vmx_interrupt_allowed,
- .nmi_allowed = vmx_nmi_allowed,
- .get_nmi_mask = vmx_get_nmi_mask,
- .set_nmi_mask = vmx_set_nmi_mask,
- .enable_nmi_window = vmx_enable_nmi_window,
- .enable_irq_window = vmx_enable_irq_window,
- .update_cr8_intercept = vmx_update_cr8_intercept,
- .set_virtual_apic_mode = vmx_set_virtual_apic_mode,
- .set_apic_access_page_addr = vmx_set_apic_access_page_addr,
- .refresh_apicv_exec_ctrl = vmx_refresh_apicv_exec_ctrl,
- .load_eoi_exitmap = vmx_load_eoi_exitmap,
- .apicv_post_state_restore = vmx_apicv_post_state_restore,
- .check_apicv_inhibit_reasons = vmx_check_apicv_inhibit_reasons,
- .hwapic_irr_update = vmx_hwapic_irr_update,
- .hwapic_isr_update = vmx_hwapic_isr_update,
- .guest_apic_has_interrupt = vmx_guest_apic_has_interrupt,
- .sync_pir_to_irr = vmx_sync_pir_to_irr,
- .deliver_posted_interrupt = vmx_deliver_posted_interrupt,
- .dy_apicv_has_pending_interrupt = pi_has_pending_interrupt,
-
- .set_tss_addr = vmx_set_tss_addr,
- .set_identity_map_addr = vmx_set_identity_map_addr,
- .get_mt_mask = vmx_get_mt_mask,
-
- .get_exit_info = vmx_get_exit_info,
-
- .vcpu_after_set_cpuid = vmx_vcpu_after_set_cpuid,
-
- .has_wbinvd_exit = cpu_has_vmx_wbinvd_exit,
-
- .write_l1_tsc_offset = vmx_write_l1_tsc_offset,
-
- .load_mmu_pgd = vmx_load_mmu_pgd,
-
- .check_intercept = vmx_check_intercept,
- .handle_exit_irqoff = vmx_handle_exit_irqoff,
-
- .request_immediate_exit = vmx_request_immediate_exit,
-
- .sched_in = vmx_sched_in,
-
- .cpu_dirty_log_size = PML_ENTITY_NUM,
- .update_cpu_dirty_logging = vmx_update_cpu_dirty_logging,
-
- .pre_block = vmx_pre_block,
- .post_block = vmx_post_block,
-
- .pmu_ops = &intel_pmu_ops,
- .nested_ops = &vmx_nested_ops,
-
- .update_pi_irte = pi_update_irte,
- .start_assignment = vmx_pi_start_assignment,
-
-#ifdef CONFIG_X86_64
- .set_hv_timer = vmx_set_hv_timer,
- .cancel_hv_timer = vmx_cancel_hv_timer,
-#endif
-
- .setup_mce = vmx_setup_mce,
-
- .smi_allowed = vmx_smi_allowed,
- .pre_enter_smm = vmx_pre_enter_smm,
- .pre_leave_smm = vmx_pre_leave_smm,
- .enable_smi_window = vmx_enable_smi_window,
-
- .can_emulate_instruction = vmx_can_emulate_instruction,
- .apic_init_signal_blocked = vmx_apic_init_signal_blocked,
- .migrate_timers = vmx_migrate_timers,
-
- .msr_filter_changed = vmx_msr_filter_changed,
- .complete_emulated_msr = kvm_complete_insn_gp,
-
- .vcpu_deliver_sipi_vector = kvm_vcpu_deliver_sipi_vector,
-};
-
static __init void vmx_setup_user_return_msrs(void)
{

@@ -7768,16 +7607,16 @@ static __init int hardware_setup(void)
* using the APIC_ACCESS_ADDR VMCS field.
*/
if (!flexpriority_enabled)
- vmx_x86_ops.set_apic_access_page_addr = NULL;
+ vt_x86_ops.set_apic_access_page_addr = NULL;

if (!cpu_has_vmx_tpr_shadow())
- vmx_x86_ops.update_cr8_intercept = NULL;
+ vt_x86_ops.update_cr8_intercept = NULL;

#if IS_ENABLED(CONFIG_HYPERV)
if (ms_hyperv.nested_features & HV_X64_NESTED_GUEST_MAPPING_FLUSH
&& enable_ept) {
- vmx_x86_ops.tlb_remote_flush = hv_remote_flush_tlb;
- vmx_x86_ops.tlb_remote_flush_with_range =
+ vt_x86_ops.tlb_remote_flush = hv_remote_flush_tlb;
+ vt_x86_ops.tlb_remote_flush_with_range =
hv_remote_flush_tlb_with_range;
}
#endif
@@ -7792,7 +7631,7 @@ static __init int hardware_setup(void)

if (!cpu_has_vmx_apicv()) {
enable_apicv = 0;
- vmx_x86_ops.sync_pir_to_irr = NULL;
+ vt_x86_ops.sync_pir_to_irr = NULL;
}

if (cpu_has_vmx_tsc_scaling()) {
@@ -7827,7 +7666,7 @@ static __init int hardware_setup(void)
enable_pml = 0;

if (!enable_pml)
- vmx_x86_ops.cpu_dirty_log_size = 0;
+ vt_x86_ops.cpu_dirty_log_size = 0;

if (!cpu_has_vmx_preemption_timer())
enable_preemption_timer = false;
@@ -7854,9 +7693,9 @@ static __init int hardware_setup(void)
}

if (!enable_preemption_timer) {
- vmx_x86_ops.set_hv_timer = NULL;
- vmx_x86_ops.cancel_hv_timer = NULL;
- vmx_x86_ops.request_immediate_exit = __kvm_request_immediate_exit;
+ vt_x86_ops.set_hv_timer = NULL;
+ vt_x86_ops.cancel_hv_timer = NULL;
+ vt_x86_ops.request_immediate_exit = __kvm_request_immediate_exit;
}

kvm_set_posted_intr_wakeup_handler(pi_wakeup_handler);
@@ -7887,15 +7726,6 @@ static __init int hardware_setup(void)
return r;
}

-static struct kvm_x86_init_ops vmx_init_ops __initdata = {
- .cpu_has_kvm_support = cpu_has_kvm_support,
- .disabled_by_bios = vmx_disabled_by_bios,
- .check_processor_compatibility = vmx_check_processor_compat,
- .hardware_setup = hardware_setup,
-
- .runtime_ops = &vmx_x86_ops,
-};
-
static void vmx_cleanup_l1d_flush(void)
{
if (vmx_l1d_flush_pages) {
@@ -7906,45 +7736,13 @@ static void vmx_cleanup_l1d_flush(void)
l1tf_vmx_mitigation = VMENTER_L1D_FLUSH_AUTO;
}

-static void vmx_exit(void)
-{
-#ifdef CONFIG_KEXEC_CORE
- RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
- synchronize_rcu();
-#endif
-
- kvm_exit();
-
-#if IS_ENABLED(CONFIG_HYPERV)
- if (static_branch_unlikely(&enable_evmcs)) {
- int cpu;
- struct hv_vp_assist_page *vp_ap;
- /*
- * Reset everything to support using non-enlightened VMCS
- * access later (e.g. when we reload the module with
- * enlightened_vmcs=0)
- */
- for_each_online_cpu(cpu) {
- vp_ap = hv_get_vp_assist_page(cpu);
-
- if (!vp_ap)
- continue;
-
- vp_ap->nested_control.features.directhypercall = 0;
- vp_ap->current_nested_vmcs = 0;
- vp_ap->enlighten_vmentry = 0;
- }
-
- static_branch_disable(&enable_evmcs);
- }
-#endif
- vmx_cleanup_l1d_flush();
-}
-module_exit(vmx_exit);
-
-static int __init vmx_init(void)
+static void __init vmx_pre_kvm_init(unsigned int *vcpu_size,
+ unsigned int *vcpu_align)
{
- int r, cpu;
+ if (sizeof(struct vcpu_vmx) > *vcpu_size)
+ *vcpu_size = sizeof(struct vcpu_vmx);
+ if (__alignof__(struct vcpu_vmx) > *vcpu_align)
+ *vcpu_align = __alignof__(struct vcpu_vmx);

#if IS_ENABLED(CONFIG_HYPERV)
/*
@@ -7972,18 +7770,45 @@ static int __init vmx_init(void)
}

if (ms_hyperv.nested_features & HV_X64_NESTED_DIRECT_FLUSH)
- vmx_x86_ops.enable_direct_tlbflush
+ vt_x86_ops.enable_direct_tlbflush
= hv_enable_direct_tlbflush;

} else {
enlightened_vmcs = false;
}
#endif
+}

- r = kvm_init(&vmx_init_ops, sizeof(struct vcpu_vmx),
- __alignof__(struct vcpu_vmx), THIS_MODULE);
- if (r)
- return r;
+static void vmx_post_kvm_exit(void)
+{
+#if IS_ENABLED(CONFIG_HYPERV)
+ if (static_branch_unlikely(&enable_evmcs)) {
+ int cpu;
+ struct hv_vp_assist_page *vp_ap;
+ /*
+ * Reset everything to support using non-enlightened VMCS
+ * access later (e.g. when we reload the module with
+ * enlightened_vmcs=0)
+ */
+ for_each_online_cpu(cpu) {
+ vp_ap = hv_get_vp_assist_page(cpu);
+
+ if (!vp_ap)
+ continue;
+
+ vp_ap->nested_control.features.directhypercall = 0;
+ vp_ap->current_nested_vmcs = 0;
+ vp_ap->enlighten_vmentry = 0;
+ }
+
+ static_branch_disable(&enable_evmcs);
+ }
+#endif
+}
+
+static int __init vmx_init(void)
+{
+ int r, cpu;

/*
* Must be called after kvm_init() so enable_ept is properly set
@@ -7993,10 +7818,8 @@ static int __init vmx_init(void)
* mitigation mode.
*/
r = vmx_setup_l1d_flush(vmentry_l1d_flush_param);
- if (r) {
- vmx_exit();
+ if (r)
return r;
- }

for_each_possible_cpu(cpu) {
INIT_LIST_HEAD(&per_cpu(loaded_vmcss_on_cpu, cpu));
@@ -8020,4 +7843,12 @@ static int __init vmx_init(void)

return 0;
}
-module_init(vmx_init);
+
+static void vmx_exit(void)
+{
+#ifdef CONFIG_KEXEC_CORE
+ RCU_INIT_POINTER(crash_vmclear_loaded_vmcss, NULL);
+ synchronize_rcu();
+#endif
+ vmx_cleanup_l1d_flush();
+}
--
2.25.1
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