Bilddatei vmx.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __KVM_X86_VMX_H
#define __KVM_X86_VMX_H
#include <linux/kvm_host.h>
#include <asm /kvm.h>
#include <asm /intel_pt.h>
#include <asm /perf_event.h>
#include <asm /posted_intr.h>
#include "capabilities.h"
#include "../kvm_cache_regs.h"
#include "pmu_intel.h"
#include "vmcs.h"
#include "vmx_ops.h"
#include "../cpuid.h"
#include "run_flags.h"
#include "../mmu.h"
#include "common.h"
#ifdef CONFIG_X86_64
#define MAX_NR_USER_RETURN_MSRS 7
#else
#define MAX_NR_USER_RETURN_MSRS 4
#endif
#define MAX_NR_LOADSTORE_MSRS 8
struct vmx_msrs {
unsigned int nr;
struct vmx_msr_entry val[MAX_NR_LOADSTORE_MSRS];
};
struct vmx_uret_msr {
bool load_into_hardware;
u64 data;
u64 mask;
};
enum segment_cache_field {
SEG_FIELD_SEL = 0 ,
SEG_FIELD_BASE = 1 ,
SEG_FIELD_LIMIT = 2 ,
SEG_FIELD_AR = 3 ,
SEG_FIELD_NR = 4
};
#define RTIT_ADDR_RANGE 4
struct pt_ctx {
u64 ctl;
u64 status;
u64 output_base;
u64 output_mask;
u64 cr3_match;
u64 addr_a[RTIT_ADDR_RANGE];
u64 addr_b[RTIT_ADDR_RANGE];
};
struct pt_desc {
u64 ctl_bitmask;
u32 num_address_ranges;
u32 caps[PT_CPUID_REGS_NUM * PT_CPUID_LEAVES];
struct pt_ctx host;
struct pt_ctx guest;
};
/*
* The nested_vmx structure is part of vcpu_vmx , and holds information we need
* for correct emulation of VMX ( i . e . , nested VMX ) on this vcpu .
*/
struct nested_vmx {
/* Has the level1 guest done vmxon? */
bool vmxon;
gpa_t vmxon_ptr;
bool pml_full;
/* The guest-physical address of the current VMCS L1 keeps for L2 */
gpa_t current_vmptr;
/*
* Cache of the guest ' s VMCS , existing outside of guest memory .
* Loaded from guest memory during VMPTRLD . Flushed to guest
* memory during VMCLEAR and VMPTRLD .
*/
struct vmcs12 *cached_vmcs12;
/*
* Cache of the guest ' s shadow VMCS , existing outside of guest
* memory . Loaded from guest memory during VM entry . Flushed
* to guest memory during VM exit .
*/
struct vmcs12 *cached_shadow_vmcs12;
/*
* GPA to HVA cache for accessing vmcs12 - > vmcs_link_pointer
*/
struct gfn_to_hva_cache shadow_vmcs12_cache;
/*
* GPA to HVA cache for VMCS12
*/
struct gfn_to_hva_cache vmcs12_cache;
/*
* Indicates if the shadow vmcs or enlightened vmcs must be updated
* with the data held by struct vmcs12 .
*/
bool need_vmcs12_to_shadow_sync;
bool dirty_vmcs12;
/*
* Indicates whether MSR bitmap for L2 needs to be rebuilt due to
* changes in MSR bitmap for L1 or switching to a different L2 . Note ,
* this flag can only be used reliably in conjunction with a paravirt L1
* which informs L0 whether any changes to MSR bitmap for L2 were done
* on its side .
*/
bool force_msr_bitmap_recalc;
/*
* Indicates lazily loaded guest state has not yet been decached from
* vmcs02 .
*/
bool need_sync_vmcs02_to_vmcs12_rare;
/*
* vmcs02 has been initialized , i . e . state that is constant for
* vmcs02 has been written to the backing VMCS . Initialization
* is delayed until L1 actually attempts to run a nested VM .
*/
bool vmcs02_initialized;
bool change_vmcs01_virtual_apic_mode;
bool reload_vmcs01_apic_access_page;
bool update_vmcs01_cpu_dirty_logging;
bool update_vmcs01_apicv_status;
bool update_vmcs01_hwapic_isr;
/*
* Enlightened VMCS has been enabled . It does not mean that L1 has to
* use it . However , VMX features available to L1 will be limited based
* on what the enlightened VMCS supports .
*/
bool enlightened_vmcs_enabled;
/* L2 must run next, and mustn't decide to exit to L1. */
bool nested_run_pending;
/* Pending MTF VM-exit into L1. */
bool mtf_pending;
struct loaded_vmcs vmcs02;
/*
* Guest pages referred to in the vmcs02 with host - physical
* pointers , so we must keep them pinned while L2 runs .
*/
struct kvm_host_map apic_access_page_map;
struct kvm_host_map virtual_apic_map;
struct kvm_host_map pi_desc_map;
struct pi_desc *pi_desc;
bool pi_pending;
u16 posted_intr_nv;
struct hrtimer preemption_timer;
u64 preemption_timer_deadline;
bool has_preemption_timer_deadline;
bool preemption_timer_expired;
/*
* Used to snapshot MSRs that are conditionally loaded on VM - Enter in
* order to propagate the guest ' s pre - VM - Enter value into vmcs02 . For
* emulation of VMLAUNCH / VMRESUME , the snapshot will be of L1 ' s value .
* For KVM_SET_NESTED_STATE , the snapshot is of L2 ' s value , _ if_
* userspace restores MSRs before nested state . If userspace restores
* MSRs after nested state , the snapshot holds garbage , but KVM can ' t
* detect that , and the garbage value in vmcs02 will be overwritten by
* MSR restoration in any case .
*/
u64 pre_vmenter_debugctl;
u64 pre_vmenter_bndcfgs;
/* to migrate it to L1 if L2 writes to L1's CR8 directly */
int l1_tpr_threshold;
u16 vpid02;
u16 last_vpid;
struct nested_vmx_msrs msrs;
/* SMM related state */
struct {
/* in VMX operation on SMM entry? */
bool vmxon;
/* in guest mode on SMM entry? */
bool guest_mode;
} smm;
#ifdef CONFIG_KVM_HYPERV
gpa_t hv_evmcs_vmptr;
struct kvm_host_map hv_evmcs_map;
struct hv_enlightened_vmcs *hv_evmcs;
#endif
};
struct vcpu_vmx {
struct kvm_vcpu vcpu;
struct vcpu_vt vt;
u8 fail;
u8 x2apic_msr_bitmap_mode;
u32 idt_vectoring_info;
ulong rflags;
/*
* User return MSRs are always emulated when enabled in the guest , but
* only loaded into hardware when necessary , e . g . SYSCALL # UDs outside
* of 64 - bit mode or if EFER . SCE = 1 , thus the SYSCALL MSRs don ' t need to
* be loaded into hardware if those conditions aren ' t met .
*/
struct vmx_uret_msr guest_uret_msrs[MAX_NR_USER_RETURN_MSRS];
bool guest_uret_msrs_loaded;
#ifdef CONFIG_X86_64
u64 msr_guest_kernel_gs_base;
#endif
u64 spec_ctrl;
u32 msr_ia32_umwait_control;
/*
* loaded_vmcs points to the VMCS currently used in this vcpu . For a
* non - nested ( L1 ) guest , it always points to vmcs01 . For a nested
* guest ( L2 ) , it points to a different VMCS .
*/
struct loaded_vmcs vmcs01;
struct loaded_vmcs *loaded_vmcs;
struct msr_autoload {
struct vmx_msrs guest;
struct vmx_msrs host;
} msr_autoload;
struct msr_autostore {
struct vmx_msrs guest;
} msr_autostore;
struct {
int vm86_active;
ulong save_rflags;
struct kvm_segment segs[8 ];
} rmode;
struct {
u32 bitmask; /* 4 bits per segment (1 bit per field) */
struct kvm_save_segment {
u16 selector;
unsigned long base;
u32 limit;
u32 ar;
} seg[8 ];
} segment_cache;
int vpid;
/* Support for a guest hypervisor (nested VMX) */
struct nested_vmx nested;
/* Dynamic PLE window. */
unsigned int ple_window;
bool ple_window_dirty;
/* Support for PML */
#define PML_LOG_NR_ENTRIES 512
/* PML is written backwards: this is the first entry written by the CPU */
#define PML_HEAD_INDEX (PML_LOG_NR_ENTRIES-1 )
struct page *pml_pg;
/* apic deadline value in host tsc */
u64 hv_deadline_tsc;
/*
* Only bits masked by msr_ia32_feature_control_valid_bits can be set in
* msr_ia32_feature_control . FEAT_CTL_LOCKED is always included
* in msr_ia32_feature_control_valid_bits .
*/
u64 msr_ia32_feature_control;
u64 msr_ia32_feature_control_valid_bits;
/* SGX Launch Control public key hash */
u64 msr_ia32_sgxlepubkeyhash[4 ];
u64 msr_ia32_mcu_opt_ctrl;
bool disable_fb_clear;
struct pt_desc pt_desc;
struct lbr_desc lbr_desc;
/* ve_info must be page aligned. */
struct vmx_ve_information *ve_info;
};
struct kvm_vmx {
struct kvm kvm;
unsigned int tss_addr;
bool ept_identity_pagetable_done;
gpa_t ept_identity_map_addr;
/* Posted Interrupt Descriptor (PID) table for IPI virtualization */
u64 *pid_table;
};
static __always_inline struct vcpu_vt *to_vt(struct kvm_vcpu *vcpu)
{
return &(container_of(vcpu, struct vcpu_vmx, vcpu)->vt);
}
static __always_inline struct kvm_vcpu *vt_to_vcpu(struct vcpu_vt *vt)
{
return &(container_of(vt, struct vcpu_vmx, vt)->vcpu);
}
static __always_inline union vmx_exit_reason vmx_get_exit_reason(struct kvm_vcpu *vcpu)
{
return to_vt(vcpu)->exit_reason;
}
static __always_inline unsigned long vmx_get_exit_qual(struct kvm_vcpu *vcpu)
{
struct vcpu_vt *vt = to_vt(vcpu);
if (!kvm_register_test_and_mark_available(vcpu, VCPU_EXREG_EXIT_INFO_1) &&
!WARN_ON_ONCE(is_td_vcpu(vcpu)))
vt->exit_qualification = vmcs_readl(EXIT_QUALIFICATION);
return vt->exit_qualification;
}
static __always_inline u32 vmx_get_intr_info(struct kvm_vcpu *vcpu)
{
struct vcpu_vt *vt = to_vt(vcpu);
if (!kvm_register_test_and_mark_available(vcpu, VCPU_EXREG_EXIT_INFO_2) &&
!WARN_ON_ONCE(is_td_vcpu(vcpu)))
vt->exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO);
return vt->exit_intr_info;
}
void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu);
int allocate_vpid(void );
void free_vpid(int vpid);
void vmx_set_constant_host_state(struct vcpu_vmx *vmx);
void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu);
void vmx_set_host_fs_gs(struct vmcs_host_state *host, u16 fs_sel, u16 gs_sel,
unsigned long fs_base, unsigned long gs_base);
int vmx_get_cpl(struct kvm_vcpu *vcpu);
int vmx_get_cpl_no_cache(struct kvm_vcpu *vcpu);
bool vmx_emulation_required(struct kvm_vcpu *vcpu);
unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu);
void vmx_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
u32 vmx_get_interrupt_shadow(struct kvm_vcpu *vcpu);
void vmx_set_interrupt_shadow(struct kvm_vcpu *vcpu, int mask);
int vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer);
void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
void vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
void set_cr4_guest_host_mask(struct vcpu_vmx *vmx);
void ept_save_pdptrs(struct kvm_vcpu *vcpu);
void vmx_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
void __vmx_set_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
u64 construct_eptp(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level);
bool vmx_guest_inject_ac(struct kvm_vcpu *vcpu);
void vmx_update_exception_bitmap(struct kvm_vcpu *vcpu);
bool vmx_nmi_blocked(struct kvm_vcpu *vcpu);
bool __vmx_interrupt_blocked(struct kvm_vcpu *vcpu);
bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu);
bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu);
void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked);
void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
struct vmx_uret_msr *vmx_find_uret_msr(struct vcpu_vmx *vmx, u32 msr);
void pt_update_intercept_for_msr(struct kvm_vcpu *vcpu);
void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp);
void vmx_spec_ctrl_restore_host(struct vcpu_vmx *vmx, unsigned int flags);
unsigned int __vmx_vcpu_run_flags(struct vcpu_vmx *vmx);
bool __vmx_vcpu_run(struct vcpu_vmx *vmx, unsigned long *regs,
unsigned int flags);
int vmx_find_loadstore_msr_slot(struct vmx_msrs *m, u32 msr);
void vmx_ept_load_pdptrs(struct kvm_vcpu *vcpu);
void vmx_set_intercept_for_msr(struct kvm_vcpu *vcpu, u32 msr, int type, bool set);
static inline void vmx_disable_intercept_for_msr(struct kvm_vcpu *vcpu,
u32 msr, int type)
{
vmx_set_intercept_for_msr(vcpu, msr, type, false );
}
static inline void vmx_enable_intercept_for_msr(struct kvm_vcpu *vcpu,
u32 msr, int type)
{
vmx_set_intercept_for_msr(vcpu, msr, type, true );
}
u64 vmx_get_l2_tsc_offset(struct kvm_vcpu *vcpu);
u64 vmx_get_l2_tsc_multiplier(struct kvm_vcpu *vcpu);
gva_t vmx_get_untagged_addr(struct kvm_vcpu *vcpu, gva_t gva, unsigned int flags);
void vmx_update_cpu_dirty_logging(struct kvm_vcpu *vcpu);
u64 vmx_get_supported_debugctl(struct kvm_vcpu *vcpu, bool host_initiated);
bool vmx_is_valid_debugctl(struct kvm_vcpu *vcpu, u64 data, bool host_initiated);
#define VMX_HOST_OWNED_DEBUGCTL_BITS (DEBUGCTLMSR_FREEZE_IN_SMM)
static inline void vmx_guest_debugctl_write(struct kvm_vcpu *vcpu, u64 val)
{
WARN_ON_ONCE(val & VMX_HOST_OWNED_DEBUGCTL_BITS);
val |= vcpu->arch.host_debugctl & VMX_HOST_OWNED_DEBUGCTL_BITS;
vmcs_write64(GUEST_IA32_DEBUGCTL, val);
}
static inline u64 vmx_guest_debugctl_read(void )
{
return vmcs_read64(GUEST_IA32_DEBUGCTL) & ~VMX_HOST_OWNED_DEBUGCTL_BITS;
}
static inline void vmx_reload_guest_debugctl(struct kvm_vcpu *vcpu)
{
u64 val = vmcs_read64(GUEST_IA32_DEBUGCTL);
if (!((val ^ vcpu->arch.host_debugctl) & VMX_HOST_OWNED_DEBUGCTL_BITS))
return ;
vmx_guest_debugctl_write(vcpu, val & ~VMX_HOST_OWNED_DEBUGCTL_BITS);
}
/*
* Note , early Intel manuals have the write - low and read - high bitmap offsets
* the wrong way round . The bitmaps control MSRs 0 x00000000 - 0 x00001fff and
* 0 xc0000000 - 0 xc0001fff . The former ( low ) uses bytes 0 - 0 x3ff for reads and
* 0 x800 - 0 xbff for writes . The latter ( high ) uses 0 x400 - 0 x7ff for reads and
* 0 xc00 - 0 xfff for writes . MSRs not covered by either of the ranges always
* VM - Exit .
*/
#define __BUILD_VMX_MSR_BITMAP_HELPER(rtype, action, bitop, access, base) \
static inline rtype vmx_## action## _msr_bitmap_## access(unsigned long *bitmap, \
u32 msr) \
{ \
int f = sizeof (unsigned long ); \
\
if (msr <= 0 x1fff) \
return bitop## _bit(msr, bitmap + base / f); \
else if ((msr >= 0 xc0000000) && (msr <= 0 xc0001fff)) \
return bitop## _bit(msr & 0 x1fff, bitmap + (base + 0 x400) / f); \
return (rtype)true ; \
}
#define BUILD_VMX_MSR_BITMAP_HELPERS(ret_type, action, bitop) \
__BUILD_VMX_MSR_BITMAP_HELPER(ret_type, action, bitop, read, 0 x0) \
__BUILD_VMX_MSR_BITMAP_HELPER(ret_type, action, bitop, write, 0 x800)
BUILD_VMX_MSR_BITMAP_HELPERS(bool , test, test)
BUILD_VMX_MSR_BITMAP_HELPERS(void , clear, __clear)
BUILD_VMX_MSR_BITMAP_HELPERS(void , set, __set)
static inline u8 vmx_get_rvi(void )
{
return vmcs_read16(GUEST_INTR_STATUS) & 0 xff;
}
#define __KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS \
(VM_ENTRY_LOAD_DEBUG_CONTROLS)
#ifdef CONFIG_X86_64
#define KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS \
(__KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS | \
VM_ENTRY_IA32E_MODE)
#else
#define KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS \
__KVM_REQUIRED_VMX_VM_ENTRY_CONTROLS
#endif
#define KVM_OPTIONAL_VMX_VM_ENTRY_CONTROLS \
(VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL | \
VM_ENTRY_LOAD_IA32_PAT | \
VM_ENTRY_LOAD_IA32_EFER | \
VM_ENTRY_LOAD_BNDCFGS | \
VM_ENTRY_PT_CONCEAL_PIP | \
VM_ENTRY_LOAD_IA32_RTIT_CTL)
#define __KVM_REQUIRED_VMX_VM_EXIT_CONTROLS \
(VM_EXIT_SAVE_DEBUG_CONTROLS | \
VM_EXIT_ACK_INTR_ON_EXIT)
#ifdef CONFIG_X86_64
#define KVM_REQUIRED_VMX_VM_EXIT_CONTROLS \
(__KVM_REQUIRED_VMX_VM_EXIT_CONTROLS | \
VM_EXIT_HOST_ADDR_SPACE_SIZE)
#else
#define KVM_REQUIRED_VMX_VM_EXIT_CONTROLS \
__KVM_REQUIRED_VMX_VM_EXIT_CONTROLS
#endif
#define KVM_OPTIONAL_VMX_VM_EXIT_CONTROLS \
(VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | \
VM_EXIT_SAVE_IA32_PAT | \
VM_EXIT_LOAD_IA32_PAT | \
VM_EXIT_SAVE_IA32_EFER | \
VM_EXIT_SAVE_VMX_PREEMPTION_TIMER | \
VM_EXIT_LOAD_IA32_EFER | \
VM_EXIT_CLEAR_BNDCFGS | \
VM_EXIT_PT_CONCEAL_PIP | \
VM_EXIT_CLEAR_IA32_RTIT_CTL)
#define KVM_REQUIRED_VMX_PIN_BASED_VM_EXEC_CONTROL \
(PIN_BASED_EXT_INTR_MASK | \
PIN_BASED_NMI_EXITING)
#define KVM_OPTIONAL_VMX_PIN_BASED_VM_EXEC_CONTROL \
(PIN_BASED_VIRTUAL_NMIS | \
PIN_BASED_POSTED_INTR | \
PIN_BASED_VMX_PREEMPTION_TIMER)
#define __KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL \
(CPU_BASED_HLT_EXITING | \
CPU_BASED_CR3_LOAD_EXITING | \
CPU_BASED_CR3_STORE_EXITING | \
CPU_BASED_UNCOND_IO_EXITING | \
CPU_BASED_MOV_DR_EXITING | \
CPU_BASED_USE_TSC_OFFSETTING | \
CPU_BASED_MWAIT_EXITING | \
CPU_BASED_MONITOR_EXITING | \
CPU_BASED_INVLPG_EXITING | \
CPU_BASED_RDPMC_EXITING | \
CPU_BASED_INTR_WINDOW_EXITING)
#ifdef CONFIG_X86_64
#define KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL \
(__KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL | \
CPU_BASED_CR8_LOAD_EXITING | \
CPU_BASED_CR8_STORE_EXITING)
#else
#define KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL \
__KVM_REQUIRED_VMX_CPU_BASED_VM_EXEC_CONTROL
#endif
#define KVM_OPTIONAL_VMX_CPU_BASED_VM_EXEC_CONTROL \
(CPU_BASED_RDTSC_EXITING | \
CPU_BASED_TPR_SHADOW | \
CPU_BASED_USE_IO_BITMAPS | \
CPU_BASED_MONITOR_TRAP_FLAG | \
CPU_BASED_USE_MSR_BITMAPS | \
CPU_BASED_NMI_WINDOW_EXITING | \
CPU_BASED_PAUSE_EXITING | \
CPU_BASED_ACTIVATE_SECONDARY_CONTROLS | \
CPU_BASED_ACTIVATE_TERTIARY_CONTROLS)
#define KVM_REQUIRED_VMX_SECONDARY_VM_EXEC_CONTROL 0
#define KVM_OPTIONAL_VMX_SECONDARY_VM_EXEC_CONTROL \
(SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | \
SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE | \
SECONDARY_EXEC_WBINVD_EXITING | \
SECONDARY_EXEC_ENABLE_VPID | \
SECONDARY_EXEC_ENABLE_EPT | \
SECONDARY_EXEC_UNRESTRICTED_GUEST | \
SECONDARY_EXEC_PAUSE_LOOP_EXITING | \
SECONDARY_EXEC_DESC | \
SECONDARY_EXEC_ENABLE_RDTSCP | \
SECONDARY_EXEC_ENABLE_INVPCID | \
SECONDARY_EXEC_APIC_REGISTER_VIRT | \
SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | \
SECONDARY_EXEC_SHADOW_VMCS | \
SECONDARY_EXEC_ENABLE_XSAVES | \
SECONDARY_EXEC_RDSEED_EXITING | \
SECONDARY_EXEC_RDRAND_EXITING | \
SECONDARY_EXEC_ENABLE_PML | \
SECONDARY_EXEC_TSC_SCALING | \
SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE | \
SECONDARY_EXEC_PT_USE_GPA | \
SECONDARY_EXEC_PT_CONCEAL_VMX | \
SECONDARY_EXEC_ENABLE_VMFUNC | \
SECONDARY_EXEC_BUS_LOCK_DETECTION | \
SECONDARY_EXEC_NOTIFY_VM_EXITING | \
SECONDARY_EXEC_ENCLS_EXITING | \
SECONDARY_EXEC_EPT_VIOLATION_VE)
#define KVM_REQUIRED_VMX_TERTIARY_VM_EXEC_CONTROL 0
#define KVM_OPTIONAL_VMX_TERTIARY_VM_EXEC_CONTROL \
(TERTIARY_EXEC_IPI_VIRT)
#define BUILD_CONTROLS_SHADOW(lname, uname, bits) \
static inline void lname## _controls_set(struct vcpu_vmx *vmx, u## bits val) \
{ \
if (vmx->loaded_vmcs->controls_shadow.lname != val) { \
vmcs_write## bits(uname, val); \
vmx->loaded_vmcs->controls_shadow.lname = val; \
} \
} \
static inline u## bits __## lname## _controls_get(struct loaded_vmcs *vmcs) \
{ \
return vmcs->controls_shadow.lname; \
} \
static inline u## bits lname## _controls_get(struct vcpu_vmx *vmx) \
{ \
return __## lname## _controls_get(vmx->loaded_vmcs); \
} \
static __always_inline void lname## _controls_setbit(struct vcpu_vmx *vmx, u## bits val) \
{ \
BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_## uname | KVM_OPTIONAL_VMX_## uname))); \
lname## _controls_set(vmx, lname## _controls_get(vmx) | val); \
} \
static __always_inline void lname## _controls_clearbit(struct vcpu_vmx *vmx, u## bits val) \
{ \
BUILD_BUG_ON(!(val & (KVM_REQUIRED_VMX_## uname | KVM_OPTIONAL_VMX_## uname))); \
lname## _controls_set(vmx, lname## _controls_get(vmx) & ~val); \
}
BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32 )
BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32 )
BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL, 32 )
BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL, 32 )
BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL, 32 )
BUILD_CONTROLS_SHADOW(tertiary_exec, TERTIARY_VM_EXEC_CONTROL, 64 )
/*
* VMX_REGS_LAZY_LOAD_SET - The set of registers that will be updated in the
* cache on demand . Other registers not listed here are synced to
* the cache immediately after VM - Exit .
*/
#define VMX_REGS_LAZY_LOAD_SET ((1 << VCPU_REGS_RIP) | \
(1 << VCPU_REGS_RSP) | \
(1 << VCPU_EXREG_RFLAGS) | \
(1 << VCPU_EXREG_PDPTR) | \
(1 << VCPU_EXREG_SEGMENTS) | \
(1 << VCPU_EXREG_CR0) | \
(1 << VCPU_EXREG_CR3) | \
(1 << VCPU_EXREG_CR4) | \
(1 << VCPU_EXREG_EXIT_INFO_1) | \
(1 << VCPU_EXREG_EXIT_INFO_2))
static inline unsigned long vmx_l1_guest_owned_cr0_bits(void )
{
unsigned long bits = KVM_POSSIBLE_CR0_GUEST_BITS;
/*
* CR0 . WP needs to be intercepted when KVM is shadowing legacy paging
* in order to construct shadow PTEs with the correct protections .
* Note ! CR0 . WP technically can be passed through to the guest if
* paging is disabled , but checking CR0 . PG would generate a cyclical
* dependency of sorts due to forcing the caller to ensure CR0 holds
* the correct value prior to determining which CR0 bits can be owned
* by L1 . Keep it simple and limit the optimization to EPT .
*/
if (!enable_ept)
bits &= ~X86_CR0_WP;
return bits;
}
static __always_inline struct kvm_vmx *to_kvm_vmx(struct kvm *kvm)
{
return container_of(kvm, struct kvm_vmx, kvm);
}
static __always_inline struct vcpu_vmx *to_vmx(struct kvm_vcpu *vcpu)
{
return container_of(vcpu, struct vcpu_vmx, vcpu);
}
void intel_pmu_cross_mapped_check(struct kvm_pmu *pmu);
int intel_pmu_create_guest_lbr_event(struct kvm_vcpu *vcpu);
void vmx_passthrough_lbr_msrs(struct kvm_vcpu *vcpu);
struct vmcs *alloc_vmcs_cpu(bool shadow, int cpu, gfp_t flags);
void free_vmcs(struct vmcs *vmcs);
int alloc_loaded_vmcs(struct loaded_vmcs *loaded_vmcs);
void free_loaded_vmcs(struct loaded_vmcs *loaded_vmcs);
void loaded_vmcs_clear(struct loaded_vmcs *loaded_vmcs);
static inline struct vmcs *alloc_vmcs(bool shadow)
{
return alloc_vmcs_cpu(shadow, raw_smp_processor_id(),
GFP_KERNEL_ACCOUNT);
}
static inline bool vmx_has_waitpkg(struct vcpu_vmx *vmx)
{
return secondary_exec_controls_get(vmx) &
SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE;
}
static inline bool vmx_need_pf_intercept(struct kvm_vcpu *vcpu)
{
if (!enable_ept)
return true ;
return allow_smaller_maxphyaddr &&
cpuid_maxphyaddr(vcpu) < kvm_host.maxphyaddr;
}
static inline bool is_unrestricted_guest(struct kvm_vcpu *vcpu)
{
return enable_unrestricted_guest && (!is_guest_mode(vcpu) ||
(secondary_exec_controls_get(to_vmx(vcpu)) &
SECONDARY_EXEC_UNRESTRICTED_GUEST));
}
bool __vmx_guest_state_valid(struct kvm_vcpu *vcpu);
static inline bool vmx_guest_state_valid(struct kvm_vcpu *vcpu)
{
return is_unrestricted_guest(vcpu) || __vmx_guest_state_valid(vcpu);
}
void dump_vmcs(struct kvm_vcpu *vcpu);
static inline int vmx_get_instr_info_reg(u32 vmx_instr_info)
{
return (vmx_instr_info >> 3 ) & 0 xf;
}
static inline int vmx_get_instr_info_reg2(u32 vmx_instr_info)
{
return (vmx_instr_info >> 28 ) & 0 xf;
}
static inline bool vmx_can_use_ipiv(struct kvm_vcpu *vcpu)
{
return lapic_in_kernel(vcpu) && enable_ipiv;
}
static inline void vmx_segment_cache_clear(struct vcpu_vmx *vmx)
{
vmx->segment_cache.bitmask = 0 ;
}
int vmx_init(void );
void vmx_exit(void );
#endif /* __KVM_X86_VMX_H */
Messung V0.5 in Prozent C=96 H=98 G=96
¤ Dauer der Verarbeitung: 0.14 Sekunden
(vorverarbeitet am 2026-10-01)
¤
*© Formatika GbR, Deutschland
2026-10-10
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